Issue #7652: Integrate the decimal floating point libmpdec library to speed
up the decimal module. Performance gains of the new C implementation are
between 12x and 80x, depending on the application.
diff --git a/Lib/decimal.py b/Lib/decimal.py
index e946182..b6f66ab 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -46,8 +46,8 @@
Decimal('-0.0123')
>>> Decimal(123456)
Decimal('123456')
->>> Decimal('123.45e12345678901234567890')
-Decimal('1.2345E+12345678901234567892')
+>>> Decimal('123.45e12345678')
+Decimal('1.2345E+12345680')
>>> Decimal('1.33') + Decimal('1.27')
Decimal('2.60')
>>> Decimal('12.34') + Decimal('3.87') - Decimal('18.41')
@@ -122,13 +122,20 @@
# Exceptions
'DecimalException', 'Clamped', 'InvalidOperation', 'DivisionByZero',
'Inexact', 'Rounded', 'Subnormal', 'Overflow', 'Underflow',
+ 'FloatOperation',
# Constants for use in setting up contexts
'ROUND_DOWN', 'ROUND_HALF_UP', 'ROUND_HALF_EVEN', 'ROUND_CEILING',
'ROUND_FLOOR', 'ROUND_UP', 'ROUND_HALF_DOWN', 'ROUND_05UP',
# Functions for manipulating contexts
- 'setcontext', 'getcontext', 'localcontext'
+ 'setcontext', 'getcontext', 'localcontext',
+
+ # Limits for the C version for compatibility
+ 'MAX_PREC', 'MAX_EMAX', 'MIN_EMIN', 'MIN_ETINY',
+
+ # C version: compile time choice that enables the thread local context
+ 'HAVE_THREADS'
]
__version__ = '1.70' # Highest version of the spec this complies with
@@ -137,6 +144,7 @@
import copy as _copy
import math as _math
import numbers as _numbers
+import sys
try:
from collections import namedtuple as _namedtuple
@@ -154,6 +162,19 @@
ROUND_HALF_DOWN = 'ROUND_HALF_DOWN'
ROUND_05UP = 'ROUND_05UP'
+# Compatibility with the C version
+HAVE_THREADS = True
+if sys.maxsize == 2**63-1:
+ MAX_PREC = 999999999999999999
+ MAX_EMAX = 999999999999999999
+ MIN_EMIN = -999999999999999999
+else:
+ MAX_PREC = 425000000
+ MAX_EMAX = 425000000
+ MIN_EMIN = -425000000
+
+MIN_ETINY = MIN_EMIN - (MAX_PREC-1)
+
# Errors
class DecimalException(ArithmeticError):
@@ -370,9 +391,24 @@
In all cases, Inexact, Rounded, and Subnormal will also be raised.
"""
+class FloatOperation(DecimalException):
+ """Enable stricter semantics for mixing floats and Decimals.
+
+ If the signal is not trapped (default), mixing floats and Decimals is
+ permitted in the Decimal() constructor, context.create_decimal() and
+ all comparison operators. Both conversion and comparisons are exact.
+ Any occurrence of a mixed operation is silently recorded by setting
+ FloatOperation in the context flags. Explicit conversions with
+ Decimal.from_float() or context.create_decimal_from_float() do not
+ set the flag.
+
+ Otherwise (the signal is trapped), only equality comparisons and explicit
+ conversions are silent. All other mixed operations raise FloatOperation.
+ """
+
# List of public traps and flags
_signals = [Clamped, DivisionByZero, Inexact, Overflow, Rounded,
- Underflow, InvalidOperation, Subnormal]
+ Underflow, InvalidOperation, Subnormal, FloatOperation]
# Map conditions (per the spec) to signals
_condition_map = {ConversionSyntax:InvalidOperation,
@@ -380,6 +416,10 @@
DivisionUndefined:InvalidOperation,
InvalidContext:InvalidOperation}
+# Valid rounding modes
+_rounding_modes = (ROUND_DOWN, ROUND_HALF_UP, ROUND_HALF_EVEN, ROUND_CEILING,
+ ROUND_FLOOR, ROUND_UP, ROUND_HALF_DOWN, ROUND_05UP)
+
##### Context Functions ##################################################
# The getcontext() and setcontext() function manage access to a thread-local
@@ -392,12 +432,11 @@
import threading
except ImportError:
# Python was compiled without threads; create a mock object instead
- import sys
class MockThreading(object):
def local(self, sys=sys):
return sys.modules[__name__]
threading = MockThreading()
- del sys, MockThreading
+ del MockThreading
try:
threading.local
@@ -650,6 +689,11 @@
return self
if isinstance(value, float):
+ if context is None:
+ context = getcontext()
+ context._raise_error(FloatOperation,
+ "strict semantics for mixing floats and Decimals are "
+ "enabled")
value = Decimal.from_float(value)
self._exp = value._exp
self._sign = value._sign
@@ -684,7 +728,9 @@
"""
if isinstance(f, int): # handle integer inputs
return cls(f)
- if _math.isinf(f) or _math.isnan(f): # raises TypeError if not a float
+ if not isinstance(f, float):
+ raise TypeError("argument must be int or float.")
+ if _math.isinf(f) or _math.isnan(f):
return cls(repr(f))
if _math.copysign(1.0, f) == 1.0:
sign = 0
@@ -1906,11 +1952,12 @@
def _power_modulo(self, other, modulo, context=None):
"""Three argument version of __pow__"""
- # if can't convert other and modulo to Decimal, raise
- # TypeError; there's no point returning NotImplemented (no
- # equivalent of __rpow__ for three argument pow)
- other = _convert_other(other, raiseit=True)
- modulo = _convert_other(modulo, raiseit=True)
+ other = _convert_other(other)
+ if other is NotImplemented:
+ return other
+ modulo = _convert_other(modulo)
+ if modulo is NotImplemented:
+ return modulo
if context is None:
context = getcontext()
@@ -3832,11 +3879,9 @@
clamp - If 1, change exponents if too high (Default 0)
"""
- def __init__(self, prec=None, rounding=None,
- traps=None, flags=None,
- Emin=None, Emax=None,
- capitals=None, clamp=None,
- _ignored_flags=None):
+ def __init__(self, prec=None, rounding=None, Emin=None, Emax=None,
+ capitals=None, clamp=None, flags=None, traps=None,
+ _ignored_flags=None):
# Set defaults; for everything except flags and _ignored_flags,
# inherit from DefaultContext.
try:
@@ -3859,17 +3904,78 @@
if traps is None:
self.traps = dc.traps.copy()
elif not isinstance(traps, dict):
- self.traps = dict((s, int(s in traps)) for s in _signals)
+ self.traps = dict((s, int(s in traps)) for s in _signals + traps)
else:
self.traps = traps
if flags is None:
self.flags = dict.fromkeys(_signals, 0)
elif not isinstance(flags, dict):
- self.flags = dict((s, int(s in flags)) for s in _signals)
+ self.flags = dict((s, int(s in flags)) for s in _signals + flags)
else:
self.flags = flags
+ def _set_integer_check(self, name, value, vmin, vmax):
+ if not isinstance(value, int):
+ raise TypeError("%s must be an integer" % name)
+ if vmin == '-inf':
+ if value > vmax:
+ raise ValueError("%s must be in [%s, %d]. got: %s" % (name, vmin, vmax, value))
+ elif vmax == 'inf':
+ if value < vmin:
+ raise ValueError("%s must be in [%d, %s]. got: %s" % (name, vmin, vmax, value))
+ else:
+ if value < vmin or value > vmax:
+ raise ValueError("%s must be in [%d, %d]. got %s" % (name, vmin, vmax, value))
+ return object.__setattr__(self, name, value)
+
+ def _set_signal_dict(self, name, d):
+ if not isinstance(d, dict):
+ raise TypeError("%s must be a signal dict" % d)
+ for key in d:
+ if not key in _signals:
+ raise KeyError("%s is not a valid signal dict" % d)
+ for key in _signals:
+ if not key in d:
+ raise KeyError("%s is not a valid signal dict" % d)
+ return object.__setattr__(self, name, d)
+
+ def __setattr__(self, name, value):
+ if name == 'prec':
+ return self._set_integer_check(name, value, 1, 'inf')
+ elif name == 'Emin':
+ return self._set_integer_check(name, value, '-inf', 0)
+ elif name == 'Emax':
+ return self._set_integer_check(name, value, 0, 'inf')
+ elif name == 'capitals':
+ return self._set_integer_check(name, value, 0, 1)
+ elif name == 'clamp':
+ return self._set_integer_check(name, value, 0, 1)
+ elif name == 'rounding':
+ if not value in _rounding_modes:
+ # raise TypeError even for strings to have consistency
+ # among various implementations.
+ raise TypeError("%s: invalid rounding mode" % value)
+ return object.__setattr__(self, name, value)
+ elif name == 'flags' or name == 'traps':
+ return self._set_signal_dict(name, value)
+ elif name == '_ignored_flags':
+ return object.__setattr__(self, name, value)
+ else:
+ raise AttributeError(
+ "'decimal.Context' object has no attribute '%s'" % name)
+
+ def __delattr__(self, name):
+ raise AttributeError("%s cannot be deleted" % name)
+
+ # Support for pickling, copy, and deepcopy
+ def __reduce__(self):
+ flags = [sig for sig, v in self.flags.items() if v]
+ traps = [sig for sig, v in self.traps.items() if v]
+ return (self.__class__,
+ (self.prec, self.rounding, self.Emin, self.Emax,
+ self.capitals, self.clamp, flags, traps))
+
def __repr__(self):
"""Show the current context."""
s = []
@@ -3888,18 +3994,24 @@
for flag in self.flags:
self.flags[flag] = 0
+ def clear_traps(self):
+ """Reset all traps to zero"""
+ for flag in self.traps:
+ self.traps[flag] = 0
+
def _shallow_copy(self):
"""Returns a shallow copy from self."""
- nc = Context(self.prec, self.rounding, self.traps,
- self.flags, self.Emin, self.Emax,
- self.capitals, self.clamp, self._ignored_flags)
+ nc = Context(self.prec, self.rounding, self.Emin, self.Emax,
+ self.capitals, self.clamp, self.flags, self.traps,
+ self._ignored_flags)
return nc
def copy(self):
"""Returns a deep copy from self."""
- nc = Context(self.prec, self.rounding, self.traps.copy(),
- self.flags.copy(), self.Emin, self.Emax,
- self.capitals, self.clamp, self._ignored_flags)
+ nc = Context(self.prec, self.rounding, self.Emin, self.Emax,
+ self.capitals, self.clamp,
+ self.flags.copy(), self.traps.copy(),
+ self._ignored_flags)
return nc
__copy__ = copy
@@ -4062,6 +4174,8 @@
>>> ExtendedContext.canonical(Decimal('2.50'))
Decimal('2.50')
"""
+ if not isinstance(a, Decimal):
+ raise TypeError("canonical requires a Decimal as an argument.")
return a.canonical(context=self)
def compare(self, a, b):
@@ -4372,6 +4486,8 @@
>>> ExtendedContext.is_canonical(Decimal('2.50'))
True
"""
+ if not isinstance(a, Decimal):
+ raise TypeError("is_canonical requires a Decimal as an argument.")
return a.is_canonical()
def is_finite(self, a):
@@ -4964,7 +5080,7 @@
+Normal
+Infinity
- >>> c = Context(ExtendedContext)
+ >>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.number_class(Decimal('Infinity'))
@@ -5916,6 +6032,12 @@
if equality_op and isinstance(other, _numbers.Complex) and other.imag == 0:
other = other.real
if isinstance(other, float):
+ context = getcontext()
+ if equality_op:
+ context.flags[FloatOperation] = 1
+ else:
+ context._raise_error(FloatOperation,
+ "strict semantics for mixing floats and Decimals are enabled")
return self, Decimal.from_float(other)
return NotImplemented, NotImplemented
@@ -5929,8 +6051,8 @@
prec=28, rounding=ROUND_HALF_EVEN,
traps=[DivisionByZero, Overflow, InvalidOperation],
flags=[],
- Emax=999999999,
- Emin=-999999999,
+ Emax=999999,
+ Emin=-999999,
capitals=1,
clamp=0
)
@@ -6080,7 +6202,7 @@
# if format type is 'g' or 'G' then a precision of 0 makes little
# sense; convert it to 1. Same if format type is unspecified.
if format_dict['precision'] == 0:
- if format_dict['type'] is None or format_dict['type'] in 'gG':
+ if format_dict['type'] is None or format_dict['type'] in 'gGn':
format_dict['precision'] = 1
# determine thousands separator, grouping, and decimal separator, and
@@ -6254,16 +6376,26 @@
# Constants related to the hash implementation; hash(x) is based
# on the reduction of x modulo _PyHASH_MODULUS
-import sys
_PyHASH_MODULUS = sys.hash_info.modulus
# hash values to use for positive and negative infinities, and nans
_PyHASH_INF = sys.hash_info.inf
_PyHASH_NAN = sys.hash_info.nan
-del sys
# _PyHASH_10INV is the inverse of 10 modulo the prime _PyHASH_MODULUS
_PyHASH_10INV = pow(10, _PyHASH_MODULUS - 2, _PyHASH_MODULUS)
+del sys
+try:
+ import _decimal
+except ImportError:
+ pass
+else:
+ s1 = set(dir())
+ s2 = set(dir(_decimal))
+ for name in s1 - s2:
+ del globals()[name]
+ del s1, s2, name
+ from _decimal import *
if __name__ == '__main__':
import doctest, decimal
diff --git a/Lib/test/support.py b/Lib/test/support.py
index c384222..0cdf791 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -1416,7 +1416,7 @@
#=======================================================================
# doctest driver.
-def run_doctest(module, verbosity=None):
+def run_doctest(module, verbosity=None, optionflags=0):
"""Run doctest on the given module. Return (#failures, #tests).
If optional argument verbosity is not specified (or is None), pass
@@ -1431,7 +1431,7 @@
else:
verbosity = None
- f, t = doctest.testmod(module, verbose=verbosity)
+ f, t = doctest.testmod(module, verbose=verbosity, optionflags=optionflags)
if f:
raise TestFailed("%d of %d doctests failed" % (f, t))
if verbose:
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index 014e9c7..af31b38 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -16,7 +16,7 @@
Cowlishaw's tests can be downloaded from:
- www2.hursley.ibm.com/decimal/dectest.zip
+ http://speleotrove.com/decimal/dectest.zip
This test module can be called from command line with one parameter (Arithmetic
or Behaviour) to test each part, or without parameter to test both parts. If
@@ -30,37 +30,74 @@
import warnings
import pickle, copy
import unittest
-from decimal import *
import numbers
+import locale
from test.support import (run_unittest, run_doctest, is_resource_enabled,
requires_IEEE_754)
-from test.support import check_warnings
+from test.support import check_warnings, import_fresh_module, TestFailed
import random
+import time
+import warnings
try:
import threading
except ImportError:
threading = None
-# Useful Test Constant
-Signals = tuple(getcontext().flags.keys())
+C = import_fresh_module('decimal', fresh=['_decimal'])
+P = import_fresh_module('decimal', blocked=['_decimal'])
+orig_sys_decimal = sys.modules['decimal']
+
+# fractions module must import the correct decimal module.
+cfractions = import_fresh_module('fractions', fresh=['fractions'])
+sys.modules['decimal'] = P
+pfractions = import_fresh_module('fractions', fresh=['fractions'])
+sys.modules['decimal'] = C
+fractions = {C:cfractions, P:pfractions}
+sys.modules['decimal'] = orig_sys_decimal
+
+
+# Useful Test Constant
+Signals = {
+ C: tuple(C.getcontext().flags.keys()) if C else None,
+ P: tuple(P.getcontext().flags.keys())
+}
# Signals ordered with respect to precedence: when an operation
# produces multiple signals, signals occurring later in the list
# should be handled before those occurring earlier in the list.
-OrderedSignals = (Clamped, Rounded, Inexact, Subnormal,
- Underflow, Overflow, DivisionByZero, InvalidOperation)
+OrderedSignals = {
+ C: [C.Clamped, C.Rounded, C.Inexact, C.Subnormal, C.Underflow,
+ C.Overflow, C.DivisionByZero, C.InvalidOperation,
+ C.FloatOperation] if C else None,
+ P: [P.Clamped, P.Rounded, P.Inexact, P.Subnormal, P.Underflow,
+ P.Overflow, P.DivisionByZero, P.InvalidOperation,
+ P.FloatOperation]
+}
+def assert_signals(cls, context, attr, expected):
+ d = getattr(context, attr)
+ cls.assertTrue(all(d[s] if s in expected else not d[s] for s in d))
+
+RoundingModes = {
+ C: (C.ROUND_UP, C.ROUND_DOWN, C.ROUND_CEILING, C.ROUND_FLOOR,
+ C.ROUND_HALF_UP, C.ROUND_HALF_DOWN, C.ROUND_HALF_EVEN,
+ C.ROUND_05UP) if C else None,
+ P: (P.ROUND_UP, P.ROUND_DOWN, P.ROUND_CEILING, P.ROUND_FLOOR,
+ P.ROUND_HALF_UP, P.ROUND_HALF_DOWN, P.ROUND_HALF_EVEN,
+ P.ROUND_05UP)
+}
# Tests are built around these assumed context defaults.
# test_main() restores the original context.
-def init():
- global ORIGINAL_CONTEXT
- ORIGINAL_CONTEXT = getcontext().copy()
- DefaultTestContext = Context(
- prec = 9,
- rounding = ROUND_HALF_EVEN,
- traps = dict.fromkeys(Signals, 0)
- )
- setcontext(DefaultTestContext)
+ORIGINAL_CONTEXT = {
+ C: C.getcontext().copy() if C else None,
+ P: P.getcontext().copy()
+}
+def init(m):
+ if not m: return
+ DefaultTestContext = m.Context(
+ prec=9, rounding=m.ROUND_HALF_EVEN, traps=dict.fromkeys(Signals[m], 0)
+ )
+ m.setcontext(DefaultTestContext)
TESTDATADIR = 'decimaltestdata'
if __name__ == '__main__':
@@ -72,149 +109,175 @@
skip_expected = not os.path.isdir(directory)
-# list of individual .decTest test ids that correspond to tests that
-# we're skipping for one reason or another.
-skipped_test_ids = set([
- # Skip implementation-specific scaleb tests.
- 'scbx164',
- 'scbx165',
-
- # For some operations (currently exp, ln, log10, power), the decNumber
- # reference implementation imposes additional restrictions on the context
- # and operands. These restrictions are not part of the specification;
- # however, the effect of these restrictions does show up in some of the
- # testcases. We skip testcases that violate these restrictions, since
- # Decimal behaves differently from decNumber for these testcases so these
- # testcases would otherwise fail.
- 'expx901',
- 'expx902',
- 'expx903',
- 'expx905',
- 'lnx901',
- 'lnx902',
- 'lnx903',
- 'lnx905',
- 'logx901',
- 'logx902',
- 'logx903',
- 'logx905',
- 'powx1183',
- 'powx1184',
- 'powx4001',
- 'powx4002',
- 'powx4003',
- 'powx4005',
- 'powx4008',
- 'powx4010',
- 'powx4012',
- 'powx4014',
- ])
-
# Make sure it actually raises errors when not expected and caught in flags
# Slower, since it runs some things several times.
EXTENDEDERRORTEST = False
-#Map the test cases' error names to the actual errors
-ErrorNames = {'clamped' : Clamped,
- 'conversion_syntax' : InvalidOperation,
- 'division_by_zero' : DivisionByZero,
- 'division_impossible' : InvalidOperation,
- 'division_undefined' : InvalidOperation,
- 'inexact' : Inexact,
- 'invalid_context' : InvalidOperation,
- 'invalid_operation' : InvalidOperation,
- 'overflow' : Overflow,
- 'rounded' : Rounded,
- 'subnormal' : Subnormal,
- 'underflow' : Underflow}
+# Test extra functionality in the C version (-DEXTRA_FUNCTIONALITY).
+EXTRA_FUNCTIONALITY = True if hasattr(C, 'DecClamped') else False
+requires_extra_functionality = unittest.skipUnless(
+ EXTRA_FUNCTIONALITY, "test requires build with -DEXTRA_FUNCTIONALITY")
+skip_if_extra_functionality = unittest.skipIf(
+ EXTRA_FUNCTIONALITY, "test requires regular build")
-def Nonfunction(*args):
- """Doesn't do anything."""
- return None
+class IBMTestCases(unittest.TestCase):
+ """Class which tests the Decimal class against the IBM test cases."""
-RoundingDict = {'ceiling' : ROUND_CEILING, #Maps test-case names to roundings.
- 'down' : ROUND_DOWN,
- 'floor' : ROUND_FLOOR,
- 'half_down' : ROUND_HALF_DOWN,
- 'half_even' : ROUND_HALF_EVEN,
- 'half_up' : ROUND_HALF_UP,
- 'up' : ROUND_UP,
- '05up' : ROUND_05UP}
-
-# Name adapter to be able to change the Decimal and Context
-# interface without changing the test files from Cowlishaw
-nameAdapter = {'and':'logical_and',
- 'apply':'_apply',
- 'class':'number_class',
- 'comparesig':'compare_signal',
- 'comparetotal':'compare_total',
- 'comparetotmag':'compare_total_mag',
- 'copy':'copy_decimal',
- 'copyabs':'copy_abs',
- 'copynegate':'copy_negate',
- 'copysign':'copy_sign',
- 'divideint':'divide_int',
- 'invert':'logical_invert',
- 'iscanonical':'is_canonical',
- 'isfinite':'is_finite',
- 'isinfinite':'is_infinite',
- 'isnan':'is_nan',
- 'isnormal':'is_normal',
- 'isqnan':'is_qnan',
- 'issigned':'is_signed',
- 'issnan':'is_snan',
- 'issubnormal':'is_subnormal',
- 'iszero':'is_zero',
- 'maxmag':'max_mag',
- 'minmag':'min_mag',
- 'nextminus':'next_minus',
- 'nextplus':'next_plus',
- 'nexttoward':'next_toward',
- 'or':'logical_or',
- 'reduce':'normalize',
- 'remaindernear':'remainder_near',
- 'samequantum':'same_quantum',
- 'squareroot':'sqrt',
- 'toeng':'to_eng_string',
- 'tointegral':'to_integral_value',
- 'tointegralx':'to_integral_exact',
- 'tosci':'to_sci_string',
- 'xor':'logical_xor',
- }
-
-# The following functions return True/False rather than a Decimal instance
-
-LOGICAL_FUNCTIONS = (
- 'is_canonical',
- 'is_finite',
- 'is_infinite',
- 'is_nan',
- 'is_normal',
- 'is_qnan',
- 'is_signed',
- 'is_snan',
- 'is_subnormal',
- 'is_zero',
- 'same_quantum',
- )
-
-class DecimalTest(unittest.TestCase):
- """Class which tests the Decimal class against the test cases.
-
- Changed for unittest.
- """
def setUp(self):
- self.context = Context()
+ self.context = self.decimal.Context()
+ self.readcontext = self.decimal.Context()
self.ignore_list = ['#']
- # Basically, a # means return NaN InvalidOperation.
- # Different from a sNaN in trim
+ # List of individual .decTest test ids that correspond to tests that
+ # we're skipping for one reason or another.
+ self.skipped_test_ids = set([
+ # Skip implementation-specific scaleb tests.
+ 'scbx164',
+ 'scbx165',
+
+ # For some operations (currently exp, ln, log10, power), the decNumber
+ # reference implementation imposes additional restrictions on the context
+ # and operands. These restrictions are not part of the specification;
+ # however, the effect of these restrictions does show up in some of the
+ # testcases. We skip testcases that violate these restrictions, since
+ # Decimal behaves differently from decNumber for these testcases so these
+ # testcases would otherwise fail.
+ 'expx901',
+ 'expx902',
+ 'expx903',
+ 'expx905',
+ 'lnx901',
+ 'lnx902',
+ 'lnx903',
+ 'lnx905',
+ 'logx901',
+ 'logx902',
+ 'logx903',
+ 'logx905',
+ 'powx1183',
+ 'powx1184',
+ 'powx4001',
+ 'powx4002',
+ 'powx4003',
+ 'powx4005',
+ 'powx4008',
+ 'powx4010',
+ 'powx4012',
+ 'powx4014',
+ ])
+
+ if self.decimal == C:
+ # status has additional Subnormal, Underflow
+ self.skipped_test_ids.add('pwsx803')
+ self.skipped_test_ids.add('pwsx805')
+ # Correct rounding (skipped for decNumber, too)
+ self.skipped_test_ids.add('powx4302')
+ self.skipped_test_ids.add('powx4303')
+ self.skipped_test_ids.add('powx4342')
+ self.skipped_test_ids.add('powx4343')
+ # http://bugs.python.org/issue7049
+ self.skipped_test_ids.add('pwmx325')
+ self.skipped_test_ids.add('pwmx326')
+
+ # Map test directives to setter functions.
self.ChangeDict = {'precision' : self.change_precision,
- 'rounding' : self.change_rounding_method,
- 'maxexponent' : self.change_max_exponent,
- 'minexponent' : self.change_min_exponent,
- 'clamp' : self.change_clamp}
+ 'rounding' : self.change_rounding_method,
+ 'maxexponent' : self.change_max_exponent,
+ 'minexponent' : self.change_min_exponent,
+ 'clamp' : self.change_clamp}
+
+ # Name adapter to be able to change the Decimal and Context
+ # interface without changing the test files from Cowlishaw.
+ self.NameAdapter = {'and':'logical_and',
+ 'apply':'_apply',
+ 'class':'number_class',
+ 'comparesig':'compare_signal',
+ 'comparetotal':'compare_total',
+ 'comparetotmag':'compare_total_mag',
+ 'copy':'copy_decimal',
+ 'copyabs':'copy_abs',
+ 'copynegate':'copy_negate',
+ 'copysign':'copy_sign',
+ 'divideint':'divide_int',
+ 'invert':'logical_invert',
+ 'iscanonical':'is_canonical',
+ 'isfinite':'is_finite',
+ 'isinfinite':'is_infinite',
+ 'isnan':'is_nan',
+ 'isnormal':'is_normal',
+ 'isqnan':'is_qnan',
+ 'issigned':'is_signed',
+ 'issnan':'is_snan',
+ 'issubnormal':'is_subnormal',
+ 'iszero':'is_zero',
+ 'maxmag':'max_mag',
+ 'minmag':'min_mag',
+ 'nextminus':'next_minus',
+ 'nextplus':'next_plus',
+ 'nexttoward':'next_toward',
+ 'or':'logical_or',
+ 'reduce':'normalize',
+ 'remaindernear':'remainder_near',
+ 'samequantum':'same_quantum',
+ 'squareroot':'sqrt',
+ 'toeng':'to_eng_string',
+ 'tointegral':'to_integral_value',
+ 'tointegralx':'to_integral_exact',
+ 'tosci':'to_sci_string',
+ 'xor':'logical_xor'}
+
+ # Map test-case names to roundings.
+ self.RoundingDict = {'ceiling' : self.decimal.ROUND_CEILING,
+ 'down' : self.decimal.ROUND_DOWN,
+ 'floor' : self.decimal.ROUND_FLOOR,
+ 'half_down' : self.decimal.ROUND_HALF_DOWN,
+ 'half_even' : self.decimal.ROUND_HALF_EVEN,
+ 'half_up' : self.decimal.ROUND_HALF_UP,
+ 'up' : self.decimal.ROUND_UP,
+ '05up' : self.decimal.ROUND_05UP}
+
+ # Map the test cases' error names to the actual errors.
+ self.ErrorNames = {'clamped' : self.decimal.Clamped,
+ 'conversion_syntax' : self.decimal.InvalidOperation,
+ 'division_by_zero' : self.decimal.DivisionByZero,
+ 'division_impossible' : self.decimal.InvalidOperation,
+ 'division_undefined' : self.decimal.InvalidOperation,
+ 'inexact' : self.decimal.Inexact,
+ 'invalid_context' : self.decimal.InvalidOperation,
+ 'invalid_operation' : self.decimal.InvalidOperation,
+ 'overflow' : self.decimal.Overflow,
+ 'rounded' : self.decimal.Rounded,
+ 'subnormal' : self.decimal.Subnormal,
+ 'underflow' : self.decimal.Underflow}
+
+ # The following functions return True/False rather than a
+ # Decimal instance.
+ self.LogicalFunctions = ('is_canonical',
+ 'is_finite',
+ 'is_infinite',
+ 'is_nan',
+ 'is_normal',
+ 'is_qnan',
+ 'is_signed',
+ 'is_snan',
+ 'is_subnormal',
+ 'is_zero',
+ 'same_quantum')
+
+ def read_unlimited(self, v, context):
+ """Work around the limitations of the 32-bit _decimal version. The
+ guaranteed maximum values for prec, Emax etc. are 425000000,
+ but higher values usually work, except for rare corner cases.
+ In particular, all of the IBM tests pass with maximum values
+ of 1070000000."""
+ if self.decimal == C and self.decimal.MAX_EMAX == 425000000:
+ self.readcontext._unsafe_setprec(1070000000)
+ self.readcontext._unsafe_setemax(1070000000)
+ self.readcontext._unsafe_setemin(-1070000000)
+ return self.readcontext.create_decimal(v)
+ else:
+ return self.decimal.Decimal(v, context)
def eval_file(self, file):
global skip_expected
@@ -227,7 +290,7 @@
#print line
try:
t = self.eval_line(line)
- except DecimalException as exception:
+ except self.decimal.DecimalException as exception:
#Exception raised where there shouldn't have been one.
self.fail('Exception "'+exception.__class__.__name__ + '" raised on line '+line)
@@ -254,23 +317,23 @@
def eval_directive(self, s):
funct, value = (x.strip().lower() for x in s.split(':'))
if funct == 'rounding':
- value = RoundingDict[value]
+ value = self.RoundingDict[value]
else:
try:
value = int(value)
except ValueError:
pass
- funct = self.ChangeDict.get(funct, Nonfunction)
+ funct = self.ChangeDict.get(funct, (lambda *args: None))
funct(value)
def eval_equation(self, s):
- #global DEFAULT_PRECISION
- #print DEFAULT_PRECISION
if not TEST_ALL and random.random() < 0.90:
return
+ self.context.clear_flags()
+
try:
Sides = s.split('->')
L = Sides[0].strip().split()
@@ -283,26 +346,26 @@
ans = L[0]
exceptions = L[1:]
except (TypeError, AttributeError, IndexError):
- raise InvalidOperation
+ raise self.decimal.InvalidOperation
def FixQuotes(val):
val = val.replace("''", 'SingleQuote').replace('""', 'DoubleQuote')
val = val.replace("'", '').replace('"', '')
val = val.replace('SingleQuote', "'").replace('DoubleQuote', '"')
return val
- if id in skipped_test_ids:
+ if id in self.skipped_test_ids:
return
- fname = nameAdapter.get(funct, funct)
+ fname = self.NameAdapter.get(funct, funct)
if fname == 'rescale':
return
funct = getattr(self.context, fname)
vals = []
conglomerate = ''
quote = 0
- theirexceptions = [ErrorNames[x.lower()] for x in exceptions]
+ theirexceptions = [self.ErrorNames[x.lower()] for x in exceptions]
- for exception in Signals:
+ for exception in Signals[self.decimal]:
self.context.traps[exception] = 1 #Catch these bugs...
for exception in theirexceptions:
self.context.traps[exception] = 0
@@ -324,7 +387,7 @@
funct(self.context.create_decimal(v))
except error:
pass
- except Signals as e:
+ except Signals[self.decimal] as e:
self.fail("Raised %s in %s when %s disabled" % \
(e, s, error))
else:
@@ -332,7 +395,7 @@
self.context.traps[error] = 0
v = self.context.create_decimal(v)
else:
- v = Decimal(v, self.context)
+ v = self.read_unlimited(v, self.context)
vals.append(v)
ans = FixQuotes(ans)
@@ -344,7 +407,7 @@
funct(*vals)
except error:
pass
- except Signals as e:
+ except Signals[self.decimal] as e:
self.fail("Raised %s in %s when %s disabled" % \
(e, s, error))
else:
@@ -352,14 +415,14 @@
self.context.traps[error] = 0
# as above, but add traps cumulatively, to check precedence
- ordered_errors = [e for e in OrderedSignals if e in theirexceptions]
+ ordered_errors = [e for e in OrderedSignals[self.decimal] if e in theirexceptions]
for error in ordered_errors:
self.context.traps[error] = 1
try:
funct(*vals)
except error:
pass
- except Signals as e:
+ except Signals[self.decimal] as e:
self.fail("Raised %s in %s; expected %s" %
(type(e), s, error))
else:
@@ -373,54 +436,69 @@
print("--", self.context)
try:
result = str(funct(*vals))
- if fname in LOGICAL_FUNCTIONS:
+ if fname in self.LogicalFunctions:
result = str(int(eval(result))) # 'True', 'False' -> '1', '0'
- except Signals as error:
+ except Signals[self.decimal] as error:
self.fail("Raised %s in %s" % (error, s))
except: #Catch any error long enough to state the test case.
print("ERROR:", s)
raise
myexceptions = self.getexceptions()
- self.context.clear_flags()
myexceptions.sort(key=repr)
theirexceptions.sort(key=repr)
self.assertEqual(result, ans,
'Incorrect answer for ' + s + ' -- got ' + result)
+
self.assertEqual(myexceptions, theirexceptions,
'Incorrect flags set in ' + s + ' -- got ' + str(myexceptions))
return
def getexceptions(self):
- return [e for e in Signals if self.context.flags[e]]
+ return [e for e in Signals[self.decimal] if self.context.flags[e]]
def change_precision(self, prec):
- self.context.prec = prec
+ if self.decimal == C and self.decimal.MAX_PREC == 425000000:
+ self.context._unsafe_setprec(prec)
+ else:
+ self.context.prec = prec
def change_rounding_method(self, rounding):
self.context.rounding = rounding
def change_min_exponent(self, exp):
- self.context.Emin = exp
+ if self.decimal == C and self.decimal.MAX_PREC == 425000000:
+ self.context._unsafe_setemin(exp)
+ else:
+ self.context.Emin = exp
def change_max_exponent(self, exp):
- self.context.Emax = exp
+ if self.decimal == C and self.decimal.MAX_PREC == 425000000:
+ self.context._unsafe_setemax(exp)
+ else:
+ self.context.Emax = exp
def change_clamp(self, clamp):
self.context.clamp = clamp
-
+class CIBMTestCases(IBMTestCases):
+ decimal = C
+class PyIBMTestCases(IBMTestCases):
+ decimal = P
# The following classes test the behaviour of Decimal according to PEP 327
-class DecimalExplicitConstructionTest(unittest.TestCase):
+class ExplicitConstructionTest(unittest.TestCase):
'''Unit tests for Explicit Construction cases of Decimal.'''
def test_explicit_empty(self):
+ Decimal = self.decimal.Decimal
self.assertEqual(Decimal(), Decimal("0"))
def test_explicit_from_None(self):
+ Decimal = self.decimal.Decimal
self.assertRaises(TypeError, Decimal, None)
def test_explicit_from_int(self):
+ Decimal = self.decimal.Decimal
#positive
d = Decimal(45)
@@ -438,7 +516,18 @@
d = Decimal(0)
self.assertEqual(str(d), '0')
+ # single word longs
+ for n in range(0, 32):
+ for sign in (-1, 1):
+ for x in range(-5, 5):
+ i = sign * (2**n + x)
+ d = Decimal(i)
+ self.assertEqual(str(d), str(i))
+
def test_explicit_from_string(self):
+ Decimal = self.decimal.Decimal
+ InvalidOperation = self.decimal.InvalidOperation
+ localcontext = self.decimal.localcontext
#empty
self.assertEqual(str(Decimal('')), 'NaN')
@@ -458,8 +547,35 @@
#leading and trailing whitespace permitted
self.assertEqual(str(Decimal('1.3E4 \n')), '1.3E+4')
self.assertEqual(str(Decimal(' -7.89')), '-7.89')
+ self.assertEqual(str(Decimal(" 3.45679 ")), '3.45679')
+
+ # unicode whitespace
+ for lead in ["", ' ', '\u00a0', '\u205f']:
+ for trail in ["", ' ', '\u00a0', '\u205f']:
+ self.assertEqual(str(Decimal(lead + '9.311E+28' + trail)),
+ '9.311E+28')
+
+ with localcontext() as c:
+ c.traps[InvalidOperation] = True
+ # Invalid string
+ self.assertRaises(InvalidOperation, Decimal, "xyz")
+ # Two arguments max
+ self.assertRaises(TypeError, Decimal, "1234", "x", "y")
+
+ # space within the numeric part
+ self.assertRaises(InvalidOperation, Decimal, "1\u00a02\u00a03")
+ self.assertRaises(InvalidOperation, Decimal, "\u00a01\u00a02\u00a0")
+
+ # unicode whitespace
+ self.assertRaises(InvalidOperation, Decimal, "\u00a0")
+ self.assertRaises(InvalidOperation, Decimal, "\u00a0\u00a0")
+
+ # embedded NUL
+ self.assertRaises(InvalidOperation, Decimal, "12\u00003")
+
def test_explicit_from_tuples(self):
+ Decimal = self.decimal.Decimal
#zero
d = Decimal( (0, (0,), 0) )
@@ -477,6 +593,10 @@
d = Decimal( (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
self.assertEqual(str(d), '-4.34913534E-17')
+ #inf
+ d = Decimal( (0, (), "F") )
+ self.assertEqual(str(d), 'Infinity')
+
#wrong number of items
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1)) )
@@ -491,45 +611,63 @@
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 9, 1), '1') )
#bad coefficients
+ self.assertRaises(ValueError, Decimal, (1, "xyz", 2) )
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, None, 1), 2) )
self.assertRaises(ValueError, Decimal, (1, (4, -3, 4, 9, 1), 2) )
self.assertRaises(ValueError, Decimal, (1, (4, 10, 4, 9, 1), 2) )
self.assertRaises(ValueError, Decimal, (1, (4, 3, 4, 'a', 1), 2) )
+ def test_explicit_from_list(self):
+ Decimal = self.decimal.Decimal
+
+ d = Decimal([0, [0], 0])
+ self.assertEqual(str(d), '0')
+
+ d = Decimal([1, [4, 3, 4, 9, 1, 3, 5, 3, 4], -25])
+ self.assertEqual(str(d), '-4.34913534E-17')
+
+ d = Decimal([1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25])
+ self.assertEqual(str(d), '-4.34913534E-17')
+
+ d = Decimal((1, [4, 3, 4, 9, 1, 3, 5, 3, 4], -25))
+ self.assertEqual(str(d), '-4.34913534E-17')
+
def test_explicit_from_bool(self):
+ Decimal = self.decimal.Decimal
+
self.assertIs(bool(Decimal(0)), False)
self.assertIs(bool(Decimal(1)), True)
self.assertEqual(Decimal(False), Decimal(0))
self.assertEqual(Decimal(True), Decimal(1))
def test_explicit_from_Decimal(self):
+ Decimal = self.decimal.Decimal
#positive
d = Decimal(45)
e = Decimal(d)
self.assertEqual(str(e), '45')
- self.assertNotEqual(id(d), id(e))
#very large positive
d = Decimal(500000123)
e = Decimal(d)
self.assertEqual(str(e), '500000123')
- self.assertNotEqual(id(d), id(e))
#negative
d = Decimal(-45)
e = Decimal(d)
self.assertEqual(str(e), '-45')
- self.assertNotEqual(id(d), id(e))
#zero
d = Decimal(0)
e = Decimal(d)
self.assertEqual(str(e), '0')
- self.assertNotEqual(id(d), id(e))
@requires_IEEE_754
def test_explicit_from_float(self):
+
+ Decimal = self.decimal.Decimal
+
r = Decimal(0.1)
self.assertEqual(type(r), Decimal)
self.assertEqual(str(r),
@@ -550,8 +688,11 @@
self.assertEqual(x, float(Decimal(x))) # roundtrip
def test_explicit_context_create_decimal(self):
+ Decimal = self.decimal.Decimal
+ InvalidOperation = self.decimal.InvalidOperation
+ Rounded = self.decimal.Rounded
- nc = copy.copy(getcontext())
+ nc = copy.copy(self.decimal.getcontext())
nc.prec = 3
# empty
@@ -592,7 +733,73 @@
d = nc.create_decimal(prevdec)
self.assertEqual(str(d), '5.00E+8')
+ # more integers
+ nc.prec = 28
+ nc.traps[InvalidOperation] = True
+
+ for v in [-2**63-1, -2**63, -2**31-1, -2**31, 0,
+ 2**31-1, 2**31, 2**63-1, 2**63]:
+ d = nc.create_decimal(v)
+ self.assertTrue(isinstance(d, Decimal))
+ self.assertEqual(int(d), v)
+
+ nc.prec = 3
+ nc.traps[Rounded] = True
+ self.assertRaises(Rounded, nc.create_decimal, 1234)
+
+ # from string
+ nc.prec = 28
+ self.assertEqual(str(nc.create_decimal('0E-017')), '0E-17')
+ self.assertEqual(str(nc.create_decimal('45')), '45')
+ self.assertEqual(str(nc.create_decimal('-Inf')), '-Infinity')
+ self.assertEqual(str(nc.create_decimal('NaN123')), 'NaN123')
+
+ # invalid arguments
+ self.assertRaises(InvalidOperation, nc.create_decimal, "xyz")
+ self.assertRaises(ValueError, nc.create_decimal, (1, "xyz", -25))
+ self.assertRaises(TypeError, nc.create_decimal, "1234", "5678")
+
+ # too many NaN payload digits
+ nc.prec = 3
+ self.assertRaises(InvalidOperation, nc.create_decimal, 'NaN12345')
+ self.assertRaises(InvalidOperation, nc.create_decimal,
+ Decimal('NaN12345'))
+
+ nc.traps[InvalidOperation] = False
+ self.assertEqual(str(nc.create_decimal('NaN12345')), 'NaN')
+ self.assertTrue(nc.flags[InvalidOperation])
+
+ nc.flags[InvalidOperation] = False
+ self.assertEqual(str(nc.create_decimal(Decimal('NaN12345'))), 'NaN')
+ self.assertTrue(nc.flags[InvalidOperation])
+
+ def test_explicit_context_create_from_float(self):
+
+ Decimal = self.decimal.Decimal
+
+ nc = self.decimal.Context()
+ r = nc.create_decimal(0.1)
+ self.assertEqual(type(r), Decimal)
+ self.assertEqual(str(r), '0.1000000000000000055511151231')
+ self.assertTrue(nc.create_decimal(float('nan')).is_qnan())
+ self.assertTrue(nc.create_decimal(float('inf')).is_infinite())
+ self.assertTrue(nc.create_decimal(float('-inf')).is_infinite())
+ self.assertEqual(str(nc.create_decimal(float('nan'))),
+ str(nc.create_decimal('NaN')))
+ self.assertEqual(str(nc.create_decimal(float('inf'))),
+ str(nc.create_decimal('Infinity')))
+ self.assertEqual(str(nc.create_decimal(float('-inf'))),
+ str(nc.create_decimal('-Infinity')))
+ self.assertEqual(str(nc.create_decimal(float('-0.0'))),
+ str(nc.create_decimal('-0')))
+ nc.prec = 100
+ for i in range(200):
+ x = random.expovariate(0.01) * (random.random() * 2.0 - 1.0)
+ self.assertEqual(x, float(nc.create_decimal(x))) # roundtrip
+
def test_unicode_digits(self):
+ Decimal = self.decimal.Decimal
+
test_values = {
'\uff11': '1',
'\u0660.\u0660\u0663\u0667\u0662e-\u0663' : '0.0000372',
@@ -601,29 +808,41 @@
for input, expected in test_values.items():
self.assertEqual(str(Decimal(input)), expected)
+class CExplicitConstructionTest(ExplicitConstructionTest):
+ decimal = C
+class PyExplicitConstructionTest(ExplicitConstructionTest):
+ decimal = P
-class DecimalImplicitConstructionTest(unittest.TestCase):
+class ImplicitConstructionTest(unittest.TestCase):
'''Unit tests for Implicit Construction cases of Decimal.'''
def test_implicit_from_None(self):
- self.assertRaises(TypeError, eval, 'Decimal(5) + None', globals())
+ Decimal = self.decimal.Decimal
+ self.assertRaises(TypeError, eval, 'Decimal(5) + None', locals())
def test_implicit_from_int(self):
+ Decimal = self.decimal.Decimal
+
#normal
self.assertEqual(str(Decimal(5) + 45), '50')
#exceeding precision
self.assertEqual(Decimal(5) + 123456789000, Decimal(123456789000))
def test_implicit_from_string(self):
- self.assertRaises(TypeError, eval, 'Decimal(5) + "3"', globals())
+ Decimal = self.decimal.Decimal
+ self.assertRaises(TypeError, eval, 'Decimal(5) + "3"', locals())
def test_implicit_from_float(self):
- self.assertRaises(TypeError, eval, 'Decimal(5) + 2.2', globals())
+ Decimal = self.decimal.Decimal
+ self.assertRaises(TypeError, eval, 'Decimal(5) + 2.2', locals())
def test_implicit_from_Decimal(self):
+ Decimal = self.decimal.Decimal
self.assertEqual(Decimal(5) + Decimal(45), Decimal(50))
def test_rop(self):
+ Decimal = self.decimal.Decimal
+
# Allow other classes to be trained to interact with Decimals
class E:
def __divmod__(self, other):
@@ -671,10 +890,16 @@
self.assertEqual(eval('Decimal(10)' + sym + 'E()'),
'10' + rop + 'str')
+class CImplicitConstructionTest(ImplicitConstructionTest):
+ decimal = C
+class PyImplicitConstructionTest(ImplicitConstructionTest):
+ decimal = P
-class DecimalFormatTest(unittest.TestCase):
+class FormatTest(unittest.TestCase):
'''Unit tests for the format function.'''
def test_formatting(self):
+ Decimal = self.decimal.Decimal
+
# triples giving a format, a Decimal, and the expected result
test_values = [
('e', '0E-15', '0e-15'),
@@ -730,6 +955,7 @@
('g', '0E-7', '0e-7'),
('g', '-0E2', '-0e+2'),
('.0g', '3.14159265', '3'), # 0 sig fig -> 1 sig fig
+ ('.0n', '3.14159265', '3'), # same for 'n'
('.1g', '3.14159265', '3'),
('.2g', '3.14159265', '3.1'),
('.5g', '3.14159265', '3.1416'),
@@ -814,56 +1040,60 @@
# issue 6850
('a=-7.0', '0.12345', 'aaaa0.1'),
-
- # Issue 7094: Alternate formatting (specified by #)
- ('.0e', '1.0', '1e+0'),
- ('#.0e', '1.0', '1.e+0'),
- ('.0f', '1.0', '1'),
- ('#.0f', '1.0', '1.'),
- ('g', '1.1', '1.1'),
- ('#g', '1.1', '1.1'),
- ('.0g', '1', '1'),
- ('#.0g', '1', '1.'),
- ('.0%', '1.0', '100%'),
- ('#.0%', '1.0', '100.%'),
]
for fmt, d, result in test_values:
self.assertEqual(format(Decimal(d), fmt), result)
+ # bytes format argument
+ self.assertRaises(TypeError, Decimal(1).__format__, b'-020')
+
def test_n_format(self):
+ Decimal = self.decimal.Decimal
+
try:
from locale import CHAR_MAX
except ImportError:
return
+ def make_grouping(lst):
+ return ''.join([chr(x) for x in lst]) if self.decimal == C else lst
+
+ def get_fmt(x, override=None, fmt='n'):
+ if self.decimal == C:
+ return Decimal(x).__format__(fmt, override)
+ else:
+ return Decimal(x).__format__(fmt, _localeconv=override)
+
# Set up some localeconv-like dictionaries
en_US = {
'decimal_point' : '.',
- 'grouping' : [3, 3, 0],
- 'thousands_sep': ','
+ 'grouping' : make_grouping([3, 3, 0]),
+ 'thousands_sep' : ','
}
fr_FR = {
'decimal_point' : ',',
- 'grouping' : [CHAR_MAX],
+ 'grouping' : make_grouping([CHAR_MAX]),
'thousands_sep' : ''
}
ru_RU = {
'decimal_point' : ',',
- 'grouping' : [3, 3, 0],
+ 'grouping': make_grouping([3, 3, 0]),
'thousands_sep' : ' '
}
crazy = {
'decimal_point' : '&',
- 'grouping' : [1, 4, 2, CHAR_MAX],
+ 'grouping': make_grouping([1, 4, 2, CHAR_MAX]),
'thousands_sep' : '-'
}
-
- def get_fmt(x, locale, fmt='n'):
- return Decimal.__format__(Decimal(x), fmt, _localeconv=locale)
+ dotsep_wide = {
+ 'decimal_point' : b'\xc2\xbf'.decode('utf-8'),
+ 'grouping': make_grouping([3, 3, 0]),
+ 'thousands_sep' : b'\xc2\xb4'.decode('utf-8')
+ }
self.assertEqual(get_fmt(Decimal('12.7'), en_US), '12.7')
self.assertEqual(get_fmt(Decimal('12.7'), fr_FR), '12,7')
@@ -902,11 +1132,33 @@
self.assertEqual(get_fmt(123456, crazy, '012n'), '00-01-2345-6')
self.assertEqual(get_fmt(123456, crazy, '013n'), '000-01-2345-6')
+ # wide char separator and decimal point
+ self.assertEqual(get_fmt(Decimal('-1.5'), dotsep_wide, '020n'),
+ '-0\u00b4000\u00b4000\u00b4000\u00b4001\u00bf5')
-class DecimalArithmeticOperatorsTest(unittest.TestCase):
+ def test_wide_char_separator_decimal_point(self):
+ # locale with wide char separator and decimal point
+ Decimal = self.decimal.Decimal
+
+ try:
+ locale.setlocale(locale.LC_ALL, 'ps_AF')
+ except locale.Error:
+ return
+
+ self.assertEqual(format(Decimal('100000000.123'), 'n'),
+ '100\u066c000\u066c000\u066b123')
+ locale.resetlocale()
+
+class CFormatTest(FormatTest):
+ decimal = C
+class PyFormatTest(FormatTest):
+ decimal = P
+
+class ArithmeticOperatorsTest(unittest.TestCase):
'''Unit tests for all arithmetic operators, binary and unary.'''
def test_addition(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('-11.1')
d2 = Decimal('22.2')
@@ -934,6 +1186,7 @@
self.assertEqual(d1, Decimal('16.1'))
def test_subtraction(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('-11.1')
d2 = Decimal('22.2')
@@ -961,6 +1214,7 @@
self.assertEqual(d1, Decimal('-38.3'))
def test_multiplication(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('-5')
d2 = Decimal('3')
@@ -988,6 +1242,7 @@
self.assertEqual(d1, Decimal('-75'))
def test_division(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('-5')
d2 = Decimal('2')
@@ -1015,6 +1270,7 @@
self.assertEqual(d1, Decimal('-0.625'))
def test_floor_division(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('5')
d2 = Decimal('2')
@@ -1042,6 +1298,7 @@
self.assertEqual(d1, Decimal('1'))
def test_powering(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('5')
d2 = Decimal('2')
@@ -1069,6 +1326,7 @@
self.assertEqual(d1, Decimal('390625'))
def test_module(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('5')
d2 = Decimal('2')
@@ -1096,6 +1354,7 @@
self.assertEqual(d1, Decimal('1'))
def test_floor_div_module(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('5')
d2 = Decimal('2')
@@ -1122,6 +1381,8 @@
self.assertEqual(type(q), type(d1))
def test_unary_operators(self):
+ Decimal = self.decimal.Decimal
+
self.assertEqual(+Decimal(45), Decimal(+45)) # +
self.assertEqual(-Decimal(45), Decimal(-45)) # -
self.assertEqual(abs(Decimal(45)), abs(Decimal(-45))) # abs
@@ -1134,6 +1395,9 @@
# equality comparisons (==, !=) involving only quiet nans
# don't signal, but return False or True respectively.
+ Decimal = self.decimal.Decimal
+ InvalidOperation = self.decimal.InvalidOperation
+ localcontext = self.decimal.localcontext
n = Decimal('NaN')
s = Decimal('sNaN')
@@ -1179,53 +1443,124 @@
self.assertRaises(InvalidOperation, op, x, y)
def test_copy_sign(self):
- d = Decimal(1).copy_sign(Decimal(-2))
+ Decimal = self.decimal.Decimal
+ d = Decimal(1).copy_sign(Decimal(-2))
self.assertEqual(Decimal(1).copy_sign(-2), d)
self.assertRaises(TypeError, Decimal(1).copy_sign, '-2')
+class CArithmeticOperatorsTest(ArithmeticOperatorsTest):
+ decimal = C
+class PyArithmeticOperatorsTest(ArithmeticOperatorsTest):
+ decimal = P
+
# The following are two functions used to test threading in the next class
def thfunc1(cls):
+ Decimal = cls.decimal.Decimal
+ InvalidOperation = cls.decimal.InvalidOperation
+ DivisionByZero = cls.decimal.DivisionByZero
+ Overflow = cls.decimal.Overflow
+ Underflow = cls.decimal.Underflow
+ Inexact = cls.decimal.Inexact
+ getcontext = cls.decimal.getcontext
+ localcontext = cls.decimal.localcontext
+
d1 = Decimal(1)
d3 = Decimal(3)
test1 = d1/d3
- cls.synchro.wait()
- test2 = d1/d3
- cls.finish1.set()
- cls.assertEqual(test1, Decimal('0.3333333333333333333333333333'))
- cls.assertEqual(test2, Decimal('0.3333333333333333333333333333'))
+ cls.finish1.set()
+ cls.synchro.wait()
+
+ test2 = d1/d3
+ with localcontext() as c2:
+ cls.assertTrue(c2.flags[Inexact])
+ cls.assertRaises(DivisionByZero, c2.divide, d1, 0)
+ cls.assertTrue(c2.flags[DivisionByZero])
+ with localcontext() as c3:
+ cls.assertTrue(c3.flags[Inexact])
+ cls.assertTrue(c3.flags[DivisionByZero])
+ cls.assertRaises(InvalidOperation, c3.compare, d1, Decimal('sNaN'))
+ cls.assertTrue(c3.flags[InvalidOperation])
+ del c3
+ cls.assertFalse(c2.flags[InvalidOperation])
+ del c2
+
+ cls.assertEqual(test1, Decimal('0.333333333333333333333333'))
+ cls.assertEqual(test2, Decimal('0.333333333333333333333333'))
+
+ c1 = getcontext()
+ cls.assertTrue(c1.flags[Inexact])
+ for sig in Overflow, Underflow, DivisionByZero, InvalidOperation:
+ cls.assertFalse(c1.flags[sig])
return
def thfunc2(cls):
+ Decimal = cls.decimal.Decimal
+ InvalidOperation = cls.decimal.InvalidOperation
+ DivisionByZero = cls.decimal.DivisionByZero
+ Overflow = cls.decimal.Overflow
+ Underflow = cls.decimal.Underflow
+ Inexact = cls.decimal.Inexact
+ getcontext = cls.decimal.getcontext
+ localcontext = cls.decimal.localcontext
+
d1 = Decimal(1)
d3 = Decimal(3)
test1 = d1/d3
+
thiscontext = getcontext()
thiscontext.prec = 18
test2 = d1/d3
+
+ with localcontext() as c2:
+ cls.assertTrue(c2.flags[Inexact])
+ cls.assertRaises(Overflow, c2.multiply, Decimal('1e425000000'), 999)
+ cls.assertTrue(c2.flags[Overflow])
+ with localcontext(thiscontext) as c3:
+ cls.assertTrue(c3.flags[Inexact])
+ cls.assertFalse(c3.flags[Overflow])
+ c3.traps[Underflow] = True
+ cls.assertRaises(Underflow, c3.divide, Decimal('1e-425000000'), 999)
+ cls.assertTrue(c3.flags[Underflow])
+ del c3
+ cls.assertFalse(c2.flags[Underflow])
+ cls.assertFalse(c2.traps[Underflow])
+ del c2
+
cls.synchro.set()
cls.finish2.set()
- cls.assertEqual(test1, Decimal('0.3333333333333333333333333333'))
+ cls.assertEqual(test1, Decimal('0.333333333333333333333333'))
cls.assertEqual(test2, Decimal('0.333333333333333333'))
+
+ cls.assertFalse(thiscontext.traps[Underflow])
+ cls.assertTrue(thiscontext.flags[Inexact])
+ for sig in Overflow, Underflow, DivisionByZero, InvalidOperation:
+ cls.assertFalse(thiscontext.flags[sig])
return
-
-class DecimalUseOfContextTest(unittest.TestCase):
- '''Unit tests for Use of Context cases in Decimal.'''
-
- try:
- import threading
- except ImportError:
- threading = None
+class ThreadingTest(unittest.TestCase):
+ '''Unit tests for thread local contexts in Decimal.'''
# Take care executing this test from IDLE, there's an issue in threading
# that hangs IDLE and I couldn't find it
def test_threading(self):
- #Test the "threading isolation" of a Context.
+ DefaultContext = self.decimal.DefaultContext
+
+ if self.decimal == C and not self.decimal.HAVE_THREADS:
+ self.skipTest("compiled without threading")
+ # Test the "threading isolation" of a Context. Also test changing
+ # the DefaultContext, which acts as a template for the thread-local
+ # contexts.
+ save_prec = DefaultContext.prec
+ save_emax = DefaultContext.Emax
+ save_emin = DefaultContext.Emin
+ DefaultContext.prec = 24
+ DefaultContext.Emax = 425000000
+ DefaultContext.Emin = -425000000
self.synchro = threading.Event()
self.finish1 = threading.Event()
@@ -1239,17 +1574,29 @@
self.finish1.wait()
self.finish2.wait()
+
+ for sig in Signals[self.decimal]:
+ self.assertFalse(DefaultContext.flags[sig])
+
+ DefaultContext.prec = save_prec
+ DefaultContext.Emax = save_emax
+ DefaultContext.Emin = save_emin
return
- if threading is None:
- del test_threading
+@unittest.skipUnless(threading, 'threading required')
+class CThreadingTest(ThreadingTest):
+ decimal = C
+@unittest.skipUnless(threading, 'threading required')
+class PyThreadingTest(ThreadingTest):
+ decimal = P
-
-class DecimalUsabilityTest(unittest.TestCase):
+class UsabilityTest(unittest.TestCase):
'''Unit tests for Usability cases of Decimal.'''
def test_comparison_operators(self):
+ Decimal = self.decimal.Decimal
+
da = Decimal('23.42')
db = Decimal('23.42')
dc = Decimal('45')
@@ -1283,6 +1630,8 @@
self.assertEqual(a, b)
def test_decimal_float_comparison(self):
+ Decimal = self.decimal.Decimal
+
da = Decimal('0.25')
db = Decimal('3.0')
self.assertLess(da, 3.0)
@@ -1299,7 +1648,71 @@
self.assertEqual(3.0, db)
self.assertNotEqual(0.1, Decimal('0.1'))
+ def test_decimal_complex_comparison(self):
+ Decimal = self.decimal.Decimal
+
+ da = Decimal('0.25')
+ db = Decimal('3.0')
+ self.assertNotEqual(da, (1.5+0j))
+ self.assertNotEqual((1.5+0j), da)
+ self.assertEqual(da, (0.25+0j))
+ self.assertEqual((0.25+0j), da)
+ self.assertEqual((3.0+0j), db)
+ self.assertEqual(db, (3.0+0j))
+
+ self.assertNotEqual(db, (3.0+1j))
+ self.assertNotEqual((3.0+1j), db)
+
+ self.assertIs(db.__lt__(3.0+0j), NotImplemented)
+ self.assertIs(db.__le__(3.0+0j), NotImplemented)
+ self.assertIs(db.__gt__(3.0+0j), NotImplemented)
+ self.assertIs(db.__le__(3.0+0j), NotImplemented)
+
+ def test_decimal_fraction_comparison(self):
+ D = self.decimal.Decimal
+ F = fractions[self.decimal].Fraction
+ Context = self.decimal.Context
+ localcontext = self.decimal.localcontext
+ InvalidOperation = self.decimal.InvalidOperation
+
+
+ emax = C.MAX_EMAX if C else 999999999
+ emin = C.MIN_EMIN if C else -999999999
+ etiny = C.MIN_ETINY if C else -1999999997
+ c = Context(Emax=emax, Emin=emin)
+
+ with localcontext(c):
+ c.prec = emax
+ self.assertLess(D(0), F(1,9999999999999999999999999999999999999))
+ self.assertLess(F(-1,9999999999999999999999999999999999999), D(0))
+ self.assertLess(F(0,1), D("1e" + str(etiny)))
+ self.assertLess(D("-1e" + str(etiny)), F(0,1))
+ self.assertLess(F(0,9999999999999999999999999), D("1e" + str(etiny)))
+ self.assertLess(D("-1e" + str(etiny)), F(0,9999999999999999999999999))
+
+ self.assertEqual(D("0.1"), F(1,10))
+ self.assertEqual(F(1,10), D("0.1"))
+
+ c.prec = 300
+ self.assertNotEqual(D(1)/3, F(1,3))
+ self.assertNotEqual(F(1,3), D(1)/3)
+
+ self.assertLessEqual(F(120984237, 9999999999), D("9e" + str(emax)))
+ self.assertGreaterEqual(D("9e" + str(emax)), F(120984237, 9999999999))
+
+ self.assertGreater(D('inf'), F(99999999999,123))
+ self.assertGreater(D('inf'), F(-99999999999,123))
+ self.assertLess(D('-inf'), F(99999999999,123))
+ self.assertLess(D('-inf'), F(-99999999999,123))
+
+ self.assertRaises(InvalidOperation, D('nan').__gt__, F(-9,123))
+ self.assertIs(NotImplemented, F(-9,123).__lt__(D('nan')))
+ self.assertNotEqual(D('nan'), F(-9,123))
+ self.assertNotEqual(F(-9,123), D('nan'))
+
def test_copy_and_deepcopy_methods(self):
+ Decimal = self.decimal.Decimal
+
d = Decimal('43.24')
c = copy.copy(d)
self.assertEqual(id(c), id(d))
@@ -1307,6 +1720,10 @@
self.assertEqual(id(dc), id(d))
def test_hash_method(self):
+
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+
def hashit(d):
a = hash(d)
b = d.__hash__()
@@ -1367,24 +1784,27 @@
d = Decimal(s)
self.assertEqual(hashit(f), hashit(d))
- # check that the value of the hash doesn't depend on the
- # current context (issue #1757)
- c = getcontext()
- old_precision = c.prec
- x = Decimal("123456789.1")
+ with localcontext() as c:
+ # check that the value of the hash doesn't depend on the
+ # current context (issue #1757)
+ x = Decimal("123456789.1")
- c.prec = 6
- h1 = hashit(x)
- c.prec = 10
- h2 = hashit(x)
- c.prec = 16
- h3 = hashit(x)
+ c.prec = 6
+ h1 = hashit(x)
+ c.prec = 10
+ h2 = hashit(x)
+ c.prec = 16
+ h3 = hashit(x)
- self.assertEqual(h1, h2)
- self.assertEqual(h1, h3)
- c.prec = old_precision
+ self.assertEqual(h1, h2)
+ self.assertEqual(h1, h3)
+
+ c.prec = 10000
+ x = 1100 ** 1248
+ self.assertEqual(hashit(Decimal(x)), hashit(x))
def test_min_and_max_methods(self):
+ Decimal = self.decimal.Decimal
d1 = Decimal('15.32')
d2 = Decimal('28.5')
@@ -1404,6 +1824,8 @@
self.assertIs(max(d2,l1), d2)
def test_as_nonzero(self):
+ Decimal = self.decimal.Decimal
+
#as false
self.assertFalse(Decimal(0))
#as true
@@ -1411,6 +1833,7 @@
def test_tostring_methods(self):
#Test str and repr methods.
+ Decimal = self.decimal.Decimal
d = Decimal('15.32')
self.assertEqual(str(d), '15.32') # str
@@ -1418,6 +1841,7 @@
def test_tonum_methods(self):
#Test float and int methods.
+ Decimal = self.decimal.Decimal
d1 = Decimal('66')
d2 = Decimal('15.32')
@@ -1440,6 +1864,7 @@
('-11.0', -11),
('0.0', 0),
('-0E3', 0),
+ ('89891211712379812736.1', 89891211712379812736),
]
for d, i in test_pairs:
self.assertEqual(math.floor(Decimal(d)), i)
@@ -1459,6 +1884,7 @@
('-11.0', -11),
('0.0', 0),
('-0E3', 0),
+ ('89891211712379812736.1', 89891211712379812737),
]
for d, i in test_pairs:
self.assertEqual(math.ceil(Decimal(d)), i)
@@ -1516,9 +1942,8 @@
for d, n, r in test_triples:
self.assertEqual(str(round(Decimal(d), n)), r)
-
-
def test_eval_round_trip(self):
+ Decimal = self.decimal.Decimal
#with zero
d = Decimal( (0, (0,), 0) )
@@ -1537,6 +1962,7 @@
self.assertEqual(d, eval(repr(d)))
def test_as_tuple(self):
+ Decimal = self.decimal.Decimal
#with zero
d = Decimal(0)
@@ -1550,7 +1976,7 @@
d = Decimal("-4.34913534E-17")
self.assertEqual(d.as_tuple(), (1, (4, 3, 4, 9, 1, 3, 5, 3, 4), -25) )
- #inf
+ # XXX non-compliant infinity payload.
d = Decimal("Infinity")
self.assertEqual(d.as_tuple(), (0, (0,), 'F') )
@@ -1570,14 +1996,2158 @@
d = Decimal( (1, (), 'n') )
self.assertEqual(d.as_tuple(), (1, (), 'n') )
- #coefficient in infinity should be ignored
- d = Decimal( (0, (4, 5, 3, 4), 'F') )
- self.assertEqual(d.as_tuple(), (0, (0,), 'F'))
- d = Decimal( (1, (0, 2, 7, 1), 'F') )
- self.assertEqual(d.as_tuple(), (1, (0,), 'F'))
+ # XXX coefficient in infinity should raise an error
+ if self.decimal == P:
+ d = Decimal( (0, (4, 5, 3, 4), 'F') )
+ self.assertEqual(d.as_tuple(), (0, (0,), 'F'))
+ d = Decimal( (1, (0, 2, 7, 1), 'F') )
+ self.assertEqual(d.as_tuple(), (1, (0,), 'F'))
- def test_immutability_operations(self):
+ def test_subclassing(self):
+ # Different behaviours when subclassing Decimal
+ Decimal = self.decimal.Decimal
+
+ class MyDecimal(Decimal):
+ pass
+
+ d1 = MyDecimal(1)
+ d2 = MyDecimal(2)
+ d = d1 + d2
+ self.assertIs(type(d), Decimal)
+
+ d = d1.max(d2)
+ self.assertIs(type(d), Decimal)
+
+ d = copy.copy(d1)
+ self.assertIs(type(d), MyDecimal)
+ self.assertEqual(d, d1)
+
+ d = copy.deepcopy(d1)
+ self.assertIs(type(d), MyDecimal)
+ self.assertEqual(d, d1)
+
+ def test_implicit_context(self):
+ Decimal = self.decimal.Decimal
+ getcontext = self.decimal.getcontext
+
+ # Check results when context given implicitly. (Issue 2478)
+ c = getcontext()
+ self.assertEqual(str(Decimal(0).sqrt()),
+ str(c.sqrt(Decimal(0))))
+
+ def test_conversions_from_int(self):
+ # Check that methods taking a second Decimal argument will
+ # always accept an integer in place of a Decimal.
+ Decimal = self.decimal.Decimal
+
+ self.assertEqual(Decimal(4).compare(3),
+ Decimal(4).compare(Decimal(3)))
+ self.assertEqual(Decimal(4).compare_signal(3),
+ Decimal(4).compare_signal(Decimal(3)))
+ self.assertEqual(Decimal(4).compare_total(3),
+ Decimal(4).compare_total(Decimal(3)))
+ self.assertEqual(Decimal(4).compare_total_mag(3),
+ Decimal(4).compare_total_mag(Decimal(3)))
+ self.assertEqual(Decimal(10101).logical_and(1001),
+ Decimal(10101).logical_and(Decimal(1001)))
+ self.assertEqual(Decimal(10101).logical_or(1001),
+ Decimal(10101).logical_or(Decimal(1001)))
+ self.assertEqual(Decimal(10101).logical_xor(1001),
+ Decimal(10101).logical_xor(Decimal(1001)))
+ self.assertEqual(Decimal(567).max(123),
+ Decimal(567).max(Decimal(123)))
+ self.assertEqual(Decimal(567).max_mag(123),
+ Decimal(567).max_mag(Decimal(123)))
+ self.assertEqual(Decimal(567).min(123),
+ Decimal(567).min(Decimal(123)))
+ self.assertEqual(Decimal(567).min_mag(123),
+ Decimal(567).min_mag(Decimal(123)))
+ self.assertEqual(Decimal(567).next_toward(123),
+ Decimal(567).next_toward(Decimal(123)))
+ self.assertEqual(Decimal(1234).quantize(100),
+ Decimal(1234).quantize(Decimal(100)))
+ self.assertEqual(Decimal(768).remainder_near(1234),
+ Decimal(768).remainder_near(Decimal(1234)))
+ self.assertEqual(Decimal(123).rotate(1),
+ Decimal(123).rotate(Decimal(1)))
+ self.assertEqual(Decimal(1234).same_quantum(1000),
+ Decimal(1234).same_quantum(Decimal(1000)))
+ self.assertEqual(Decimal('9.123').scaleb(-100),
+ Decimal('9.123').scaleb(Decimal(-100)))
+ self.assertEqual(Decimal(456).shift(-1),
+ Decimal(456).shift(Decimal(-1)))
+
+ self.assertEqual(Decimal(-12).fma(Decimal(45), 67),
+ Decimal(-12).fma(Decimal(45), Decimal(67)))
+ self.assertEqual(Decimal(-12).fma(45, 67),
+ Decimal(-12).fma(Decimal(45), Decimal(67)))
+ self.assertEqual(Decimal(-12).fma(45, Decimal(67)),
+ Decimal(-12).fma(Decimal(45), Decimal(67)))
+
+class CUsabilityTest(UsabilityTest):
+ decimal = C
+class PyUsabilityTest(UsabilityTest):
+ decimal = P
+
+class PythonAPItests(unittest.TestCase):
+
+ def test_abc(self):
+ Decimal = self.decimal.Decimal
+
+ self.assertTrue(issubclass(Decimal, numbers.Number))
+ self.assertFalse(issubclass(Decimal, numbers.Real))
+ self.assertIsInstance(Decimal(0), numbers.Number)
+ self.assertNotIsInstance(Decimal(0), numbers.Real)
+
+ def test_pickle(self):
+ Decimal = self.decimal.Decimal
+
+ savedecimal = sys.modules['decimal']
+
+ # Round trip
+ sys.modules['decimal'] = self.decimal
+ d = Decimal('-3.141590000')
+ p = pickle.dumps(d)
+ e = pickle.loads(p)
+ self.assertEqual(d, e)
+
+ if C:
+ # Test interchangeability
+ x = C.Decimal('-3.123e81723')
+ y = P.Decimal('-3.123e81723')
+
+ sys.modules['decimal'] = C
+ sx = pickle.dumps(x)
+ sys.modules['decimal'] = P
+ r = pickle.loads(sx)
+ self.assertIsInstance(r, P.Decimal)
+ self.assertEqual(r, y)
+
+ sys.modules['decimal'] = P
+ sy = pickle.dumps(y)
+ sys.modules['decimal'] = C
+ r = pickle.loads(sy)
+ self.assertIsInstance(r, C.Decimal)
+ self.assertEqual(r, x)
+
+ sys.modules['decimal'] = savedecimal
+
+ def test_int(self):
+ Decimal = self.decimal.Decimal
+ ROUND_DOWN = self.decimal.ROUND_DOWN
+
+ for x in range(-250, 250):
+ s = '%0.2f' % (x / 100.0)
+ # should work the same as for floats
+ self.assertEqual(int(Decimal(s)), int(float(s)))
+ # should work the same as to_integral in the ROUND_DOWN mode
+ d = Decimal(s)
+ r = d.to_integral(ROUND_DOWN)
+ self.assertEqual(Decimal(int(d)), r)
+
+ self.assertRaises(ValueError, int, Decimal('-nan'))
+ self.assertRaises(ValueError, int, Decimal('snan'))
+ self.assertRaises(OverflowError, int, Decimal('inf'))
+ self.assertRaises(OverflowError, int, Decimal('-inf'))
+
+ def test_trunc(self):
+ Decimal = self.decimal.Decimal
+ ROUND_DOWN = self.decimal.ROUND_DOWN
+
+ for x in range(-250, 250):
+ s = '%0.2f' % (x / 100.0)
+ # should work the same as for floats
+ self.assertEqual(int(Decimal(s)), int(float(s)))
+ # should work the same as to_integral in the ROUND_DOWN mode
+ d = Decimal(s)
+ r = d.to_integral(ROUND_DOWN)
+ self.assertEqual(Decimal(math.trunc(d)), r)
+
+ def test_from_float(self):
+
+ Decimal = self.decimal.Decimal
+
+ class MyDecimal(Decimal):
+ pass
+
+ self.assertTrue(issubclass(MyDecimal, Decimal))
+
+ r = MyDecimal.from_float(0.1)
+ self.assertEqual(type(r), MyDecimal)
+ self.assertEqual(str(r),
+ '0.1000000000000000055511151231257827021181583404541015625')
+ bigint = 12345678901234567890123456789
+ self.assertEqual(MyDecimal.from_float(bigint), MyDecimal(bigint))
+ self.assertTrue(MyDecimal.from_float(float('nan')).is_qnan())
+ self.assertTrue(MyDecimal.from_float(float('inf')).is_infinite())
+ self.assertTrue(MyDecimal.from_float(float('-inf')).is_infinite())
+ self.assertEqual(str(MyDecimal.from_float(float('nan'))),
+ str(Decimal('NaN')))
+ self.assertEqual(str(MyDecimal.from_float(float('inf'))),
+ str(Decimal('Infinity')))
+ self.assertEqual(str(MyDecimal.from_float(float('-inf'))),
+ str(Decimal('-Infinity')))
+ self.assertRaises(TypeError, MyDecimal.from_float, 'abc')
+ for i in range(200):
+ x = random.expovariate(0.01) * (random.random() * 2.0 - 1.0)
+ self.assertEqual(x, float(MyDecimal.from_float(x))) # roundtrip
+
+ def test_create_decimal_from_float(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ ROUND_DOWN = self.decimal.ROUND_DOWN
+ ROUND_UP = self.decimal.ROUND_UP
+ Inexact = self.decimal.Inexact
+
+ context = Context(prec=5, rounding=ROUND_DOWN)
+ self.assertEqual(
+ context.create_decimal_from_float(math.pi),
+ Decimal('3.1415')
+ )
+ context = Context(prec=5, rounding=ROUND_UP)
+ self.assertEqual(
+ context.create_decimal_from_float(math.pi),
+ Decimal('3.1416')
+ )
+ context = Context(prec=5, traps=[Inexact])
+ self.assertRaises(
+ Inexact,
+ context.create_decimal_from_float,
+ math.pi
+ )
+ self.assertEqual(repr(context.create_decimal_from_float(-0.0)),
+ "Decimal('-0')")
+ self.assertEqual(repr(context.create_decimal_from_float(1.0)),
+ "Decimal('1')")
+ self.assertEqual(repr(context.create_decimal_from_float(10)),
+ "Decimal('10')")
+
+ def test_quantize(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ InvalidOperation = self.decimal.InvalidOperation
+ ROUND_DOWN = self.decimal.ROUND_DOWN
+
+ c = Context(Emax=99999, Emin=-99999)
+ self.assertEqual(
+ Decimal('7.335').quantize(Decimal('.01')),
+ Decimal('7.34')
+ )
+ self.assertEqual(
+ Decimal('7.335').quantize(Decimal('.01'), rounding=ROUND_DOWN),
+ Decimal('7.33')
+ )
+ self.assertRaises(
+ InvalidOperation,
+ Decimal("10e99999").quantize, Decimal('1e100000'), context=c
+ )
+
+ c = Context()
+ d = Decimal("0.871831e800")
+ x = d.quantize(context=c, exp=Decimal("1e797"), rounding=ROUND_DOWN)
+ self.assertEqual(x, Decimal('8.71E+799'))
+
+ def test_complex(self):
+ Decimal = self.decimal.Decimal
+
+ x = Decimal("9.8182731e181273")
+ self.assertEqual(x.real, x)
+ self.assertEqual(x.imag, 0)
+ self.assertEqual(x.conjugate(), x)
+
+ x = Decimal("1")
+ self.assertEqual(complex(x), complex(float(1)))
+
+ self.assertRaises(AttributeError, setattr, x, 'real', 100)
+ self.assertRaises(AttributeError, setattr, x, 'imag', 100)
+ self.assertRaises(AttributeError, setattr, x, 'conjugate', 100)
+ self.assertRaises(AttributeError, setattr, x, '__complex__', 100)
+
+ def test_named_parameters(self):
+ D = self.decimal.Decimal
+ Context = self.decimal.Context
+ localcontext = self.decimal.localcontext
+ InvalidOperation = self.decimal.InvalidOperation
+ Overflow = self.decimal.Overflow
+
+ xc = Context()
+ xc.prec = 1
+ xc.Emax = 1
+ xc.Emin = -1
+
+ with localcontext() as c:
+ c.clear_flags()
+
+ self.assertEqual(D(9, xc), 9)
+ self.assertEqual(D(9, context=xc), 9)
+ self.assertEqual(D(context=xc, value=9), 9)
+ self.assertEqual(D(context=xc), 0)
+ xc.clear_flags()
+ self.assertRaises(InvalidOperation, D, "xyz", context=xc)
+ self.assertTrue(xc.flags[InvalidOperation])
+ self.assertFalse(c.flags[InvalidOperation])
+
+ xc.clear_flags()
+ self.assertEqual(D(2).exp(context=xc), 7)
+ self.assertRaises(Overflow, D(8).exp, context=xc)
+ self.assertTrue(xc.flags[Overflow])
+ self.assertFalse(c.flags[Overflow])
+
+ xc.clear_flags()
+ self.assertEqual(D(2).ln(context=xc), D('0.7'))
+ self.assertRaises(InvalidOperation, D(-1).ln, context=xc)
+ self.assertTrue(xc.flags[InvalidOperation])
+ self.assertFalse(c.flags[InvalidOperation])
+
+ self.assertEqual(D(0).log10(context=xc), D('-inf'))
+ self.assertEqual(D(-1).next_minus(context=xc), -2)
+ self.assertEqual(D(-1).next_plus(context=xc), D('-0.9'))
+ self.assertEqual(D("9.73").normalize(context=xc), D('1E+1'))
+ self.assertEqual(D("9999").to_integral(context=xc), 9999)
+ self.assertEqual(D("-2000").to_integral_exact(context=xc), -2000)
+ self.assertEqual(D("123").to_integral_value(context=xc), 123)
+ self.assertEqual(D("0.0625").sqrt(context=xc), D('0.2'))
+
+ self.assertEqual(D("0.0625").compare(context=xc, other=3), -1)
+ xc.clear_flags()
+ self.assertRaises(InvalidOperation,
+ D("0").compare_signal, D('nan'), context=xc)
+ self.assertTrue(xc.flags[InvalidOperation])
+ self.assertFalse(c.flags[InvalidOperation])
+ self.assertEqual(D("0.01").max(D('0.0101'), context=xc), D('0.0'))
+ self.assertEqual(D("0.01").max(D('0.0101'), context=xc), D('0.0'))
+ self.assertEqual(D("0.2").max_mag(D('-0.3'), context=xc),
+ D('-0.3'))
+ self.assertEqual(D("0.02").min(D('-0.03'), context=xc), D('-0.0'))
+ self.assertEqual(D("0.02").min_mag(D('-0.03'), context=xc),
+ D('0.0'))
+ self.assertEqual(D("0.2").next_toward(D('-1'), context=xc), D('0.1'))
+ xc.clear_flags()
+ self.assertRaises(InvalidOperation,
+ D("0.2").quantize, D('1e10'), context=xc)
+ self.assertTrue(xc.flags[InvalidOperation])
+ self.assertFalse(c.flags[InvalidOperation])
+ self.assertEqual(D("9.99").remainder_near(D('1.5'), context=xc),
+ D('-0.5'))
+
+ self.assertEqual(D("9.9").fma(third=D('0.9'), context=xc, other=7),
+ D('7E+1'))
+
+ self.assertRaises(TypeError, D(1).is_canonical, context=xc)
+ self.assertRaises(TypeError, D(1).is_finite, context=xc)
+ self.assertRaises(TypeError, D(1).is_infinite, context=xc)
+ self.assertRaises(TypeError, D(1).is_nan, context=xc)
+ self.assertRaises(TypeError, D(1).is_qnan, context=xc)
+ self.assertRaises(TypeError, D(1).is_snan, context=xc)
+ self.assertRaises(TypeError, D(1).is_signed, context=xc)
+ self.assertRaises(TypeError, D(1).is_zero, context=xc)
+
+ self.assertFalse(D("0.01").is_normal(context=xc))
+ self.assertTrue(D("0.01").is_subnormal(context=xc))
+
+ self.assertRaises(TypeError, D(1).adjusted, context=xc)
+ self.assertRaises(TypeError, D(1).conjugate, context=xc)
+ self.assertRaises(TypeError, D(1).radix, context=xc)
+
+ self.assertEqual(D(-111).logb(context=xc), 2)
+ self.assertEqual(D(0).logical_invert(context=xc), 1)
+ self.assertEqual(D('0.01').number_class(context=xc), '+Subnormal')
+ self.assertEqual(D('0.21').to_eng_string(context=xc), '0.21')
+
+ self.assertEqual(D('11').logical_and(D('10'), context=xc), 0)
+ self.assertEqual(D('11').logical_or(D('10'), context=xc), 1)
+ self.assertEqual(D('01').logical_xor(D('10'), context=xc), 1)
+ self.assertEqual(D('23').rotate(1, context=xc), 3)
+ self.assertEqual(D('23').rotate(1, context=xc), 3)
+ xc.clear_flags()
+ self.assertRaises(Overflow,
+ D('23').scaleb, 1, context=xc)
+ self.assertTrue(xc.flags[Overflow])
+ self.assertFalse(c.flags[Overflow])
+ self.assertEqual(D('23').shift(-1, context=xc), 0)
+
+ self.assertRaises(TypeError, D.from_float, 1.1, context=xc)
+ self.assertRaises(TypeError, D(0).as_tuple, context=xc)
+
+ if (self.decimal == C):
+ self.assertRaises(TypeError, D(1).canonical, context=xc)
+ self.assertEqual(D("-1").copy_abs(context=xc), 1)
+ self.assertEqual(D("1").copy_negate(context=xc), -1)
+ else:
+ self.assertEqual(D(1).canonical(context=xc), 1)
+ self.assertRaises(TypeError, D("-1").copy_abs, context=xc)
+ self.assertRaises(TypeError, D("-1").copy_negate, context=xc)
+
+class CPythonAPItests(PythonAPItests):
+ decimal = C
+class PyPythonAPItests(PythonAPItests):
+ decimal = P
+
+class ContextAPItests(unittest.TestCase):
+
+ def test_pickle(self):
+
+ Context = self.decimal.Context
+
+ savedecimal = sys.modules['decimal']
+
+ # Round trip
+ sys.modules['decimal'] = self.decimal
+ c = Context()
+ e = pickle.loads(pickle.dumps(c))
+
+ self.assertEqual(c.prec, e.prec)
+ self.assertEqual(c.Emin, e.Emin)
+ self.assertEqual(c.Emax, e.Emax)
+ self.assertEqual(c.rounding, e.rounding)
+ self.assertEqual(c.capitals, e.capitals)
+ self.assertEqual(c.clamp, e.clamp)
+ self.assertEqual(c.flags, e.flags)
+ self.assertEqual(c.traps, e.traps)
+
+ # Test interchangeability
+ combinations = [(C, P), (P, C)] if C else [(P, P)]
+ for dumper, loader in combinations:
+ for ri, _ in enumerate(RoundingModes[dumper]):
+ for fi, _ in enumerate(OrderedSignals[dumper]):
+ for ti, _ in enumerate(OrderedSignals[dumper]):
+
+ prec = random.randrange(1, 100)
+ emin = random.randrange(-100, 0)
+ emax = random.randrange(1, 100)
+ caps = random.randrange(2)
+ clamp = random.randrange(2)
+
+ # One module dumps
+ sys.modules['decimal'] = dumper
+ c = dumper.Context(
+ prec=prec, Emin=emin, Emax=emax,
+ rounding=RoundingModes[dumper][ri],
+ capitals=caps, clamp=clamp,
+ flags=OrderedSignals[dumper][:fi],
+ traps=OrderedSignals[dumper][:ti]
+ )
+ s = pickle.dumps(c)
+
+ # The other module loads
+ sys.modules['decimal'] = loader
+ d = pickle.loads(s)
+ self.assertIsInstance(d, loader.Context)
+
+ self.assertEqual(d.prec, prec)
+ self.assertEqual(d.Emin, emin)
+ self.assertEqual(d.Emax, emax)
+ self.assertEqual(d.rounding, RoundingModes[loader][ri])
+ self.assertEqual(d.capitals, caps)
+ self.assertEqual(d.clamp, clamp)
+ assert_signals(self, d, 'flags', OrderedSignals[loader][:fi])
+ assert_signals(self, d, 'traps', OrderedSignals[loader][:ti])
+
+ sys.modules['decimal'] = savedecimal
+
+ def test_equality_with_other_types(self):
+ Decimal = self.decimal.Decimal
+
+ self.assertIn(Decimal(10), ['a', 1.0, Decimal(10), (1,2), {}])
+ self.assertNotIn(Decimal(10), ['a', 1.0, (1,2), {}])
+
+ def test_copy(self):
+ # All copies should be deep
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.copy()
+ self.assertNotEqual(id(c), id(d))
+ self.assertNotEqual(id(c.flags), id(d.flags))
+ self.assertNotEqual(id(c.traps), id(d.traps))
+ k1 = set(c.flags.keys())
+ k2 = set(d.flags.keys())
+ self.assertEqual(k1, k2)
+ self.assertEqual(c.flags, d.flags)
+
+ def test__clamp(self):
+ # In Python 3.2, the private attribute `_clamp` was made
+ # public (issue 8540), with the old `_clamp` becoming a
+ # property wrapping `clamp`. For the duration of Python 3.2
+ # only, the attribute should be gettable/settable via both
+ # `clamp` and `_clamp`; in Python 3.3, `_clamp` should be
+ # removed.
+ Context = self.decimal.Context
+ c = Context()
+ self.assertRaises(AttributeError, getattr, c, '_clamp')
+
+ def test_abs(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.abs(Decimal(-1))
+ self.assertEqual(c.abs(-1), d)
+ self.assertRaises(TypeError, c.abs, '-1')
+
+ def test_add(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.add(Decimal(1), Decimal(1))
+ self.assertEqual(c.add(1, 1), d)
+ self.assertEqual(c.add(Decimal(1), 1), d)
+ self.assertEqual(c.add(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.add, '1', 1)
+ self.assertRaises(TypeError, c.add, 1, '1')
+
+ def test_compare(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.compare(Decimal(1), Decimal(1))
+ self.assertEqual(c.compare(1, 1), d)
+ self.assertEqual(c.compare(Decimal(1), 1), d)
+ self.assertEqual(c.compare(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.compare, '1', 1)
+ self.assertRaises(TypeError, c.compare, 1, '1')
+
+ def test_compare_signal(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.compare_signal(Decimal(1), Decimal(1))
+ self.assertEqual(c.compare_signal(1, 1), d)
+ self.assertEqual(c.compare_signal(Decimal(1), 1), d)
+ self.assertEqual(c.compare_signal(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.compare_signal, '1', 1)
+ self.assertRaises(TypeError, c.compare_signal, 1, '1')
+
+ def test_compare_total(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.compare_total(Decimal(1), Decimal(1))
+ self.assertEqual(c.compare_total(1, 1), d)
+ self.assertEqual(c.compare_total(Decimal(1), 1), d)
+ self.assertEqual(c.compare_total(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.compare_total, '1', 1)
+ self.assertRaises(TypeError, c.compare_total, 1, '1')
+
+ def test_compare_total_mag(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.compare_total_mag(Decimal(1), Decimal(1))
+ self.assertEqual(c.compare_total_mag(1, 1), d)
+ self.assertEqual(c.compare_total_mag(Decimal(1), 1), d)
+ self.assertEqual(c.compare_total_mag(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.compare_total_mag, '1', 1)
+ self.assertRaises(TypeError, c.compare_total_mag, 1, '1')
+
+ def test_copy_abs(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.copy_abs(Decimal(-1))
+ self.assertEqual(c.copy_abs(-1), d)
+ self.assertRaises(TypeError, c.copy_abs, '-1')
+
+ def test_copy_decimal(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.copy_decimal(Decimal(-1))
+ self.assertEqual(c.copy_decimal(-1), d)
+ self.assertRaises(TypeError, c.copy_decimal, '-1')
+
+ def test_copy_negate(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.copy_negate(Decimal(-1))
+ self.assertEqual(c.copy_negate(-1), d)
+ self.assertRaises(TypeError, c.copy_negate, '-1')
+
+ def test_copy_sign(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.copy_sign(Decimal(1), Decimal(-2))
+ self.assertEqual(c.copy_sign(1, -2), d)
+ self.assertEqual(c.copy_sign(Decimal(1), -2), d)
+ self.assertEqual(c.copy_sign(1, Decimal(-2)), d)
+ self.assertRaises(TypeError, c.copy_sign, '1', -2)
+ self.assertRaises(TypeError, c.copy_sign, 1, '-2')
+
+ def test_divide(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.divide(Decimal(1), Decimal(2))
+ self.assertEqual(c.divide(1, 2), d)
+ self.assertEqual(c.divide(Decimal(1), 2), d)
+ self.assertEqual(c.divide(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.divide, '1', 2)
+ self.assertRaises(TypeError, c.divide, 1, '2')
+
+ def test_divide_int(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.divide_int(Decimal(1), Decimal(2))
+ self.assertEqual(c.divide_int(1, 2), d)
+ self.assertEqual(c.divide_int(Decimal(1), 2), d)
+ self.assertEqual(c.divide_int(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.divide_int, '1', 2)
+ self.assertRaises(TypeError, c.divide_int, 1, '2')
+
+ def test_divmod(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.divmod(Decimal(1), Decimal(2))
+ self.assertEqual(c.divmod(1, 2), d)
+ self.assertEqual(c.divmod(Decimal(1), 2), d)
+ self.assertEqual(c.divmod(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.divmod, '1', 2)
+ self.assertRaises(TypeError, c.divmod, 1, '2')
+
+ def test_exp(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.exp(Decimal(10))
+ self.assertEqual(c.exp(10), d)
+ self.assertRaises(TypeError, c.exp, '10')
+
+ def test_fma(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.fma(Decimal(2), Decimal(3), Decimal(4))
+ self.assertEqual(c.fma(2, 3, 4), d)
+ self.assertEqual(c.fma(Decimal(2), 3, 4), d)
+ self.assertEqual(c.fma(2, Decimal(3), 4), d)
+ self.assertEqual(c.fma(2, 3, Decimal(4)), d)
+ self.assertEqual(c.fma(Decimal(2), Decimal(3), 4), d)
+ self.assertRaises(TypeError, c.fma, '2', 3, 4)
+ self.assertRaises(TypeError, c.fma, 2, '3', 4)
+ self.assertRaises(TypeError, c.fma, 2, 3, '4')
+
+ # Issue 12079 for Context.fma ...
+ self.assertRaises(TypeError, c.fma,
+ Decimal('Infinity'), Decimal(0), "not a decimal")
+ self.assertRaises(TypeError, c.fma,
+ Decimal(1), Decimal('snan'), 1.222)
+ # ... and for Decimal.fma.
+ self.assertRaises(TypeError, Decimal('Infinity').fma,
+ Decimal(0), "not a decimal")
+ self.assertRaises(TypeError, Decimal(1).fma,
+ Decimal('snan'), 1.222)
+
+ def test_is_finite(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_finite(Decimal(10))
+ self.assertEqual(c.is_finite(10), d)
+ self.assertRaises(TypeError, c.is_finite, '10')
+
+ def test_is_infinite(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_infinite(Decimal(10))
+ self.assertEqual(c.is_infinite(10), d)
+ self.assertRaises(TypeError, c.is_infinite, '10')
+
+ def test_is_nan(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_nan(Decimal(10))
+ self.assertEqual(c.is_nan(10), d)
+ self.assertRaises(TypeError, c.is_nan, '10')
+
+ def test_is_normal(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_normal(Decimal(10))
+ self.assertEqual(c.is_normal(10), d)
+ self.assertRaises(TypeError, c.is_normal, '10')
+
+ def test_is_qnan(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_qnan(Decimal(10))
+ self.assertEqual(c.is_qnan(10), d)
+ self.assertRaises(TypeError, c.is_qnan, '10')
+
+ def test_is_signed(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_signed(Decimal(10))
+ self.assertEqual(c.is_signed(10), d)
+ self.assertRaises(TypeError, c.is_signed, '10')
+
+ def test_is_snan(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_snan(Decimal(10))
+ self.assertEqual(c.is_snan(10), d)
+ self.assertRaises(TypeError, c.is_snan, '10')
+
+ def test_is_subnormal(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_subnormal(Decimal(10))
+ self.assertEqual(c.is_subnormal(10), d)
+ self.assertRaises(TypeError, c.is_subnormal, '10')
+
+ def test_is_zero(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.is_zero(Decimal(10))
+ self.assertEqual(c.is_zero(10), d)
+ self.assertRaises(TypeError, c.is_zero, '10')
+
+ def test_ln(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.ln(Decimal(10))
+ self.assertEqual(c.ln(10), d)
+ self.assertRaises(TypeError, c.ln, '10')
+
+ def test_log10(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.log10(Decimal(10))
+ self.assertEqual(c.log10(10), d)
+ self.assertRaises(TypeError, c.log10, '10')
+
+ def test_logb(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.logb(Decimal(10))
+ self.assertEqual(c.logb(10), d)
+ self.assertRaises(TypeError, c.logb, '10')
+
+ def test_logical_and(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.logical_and(Decimal(1), Decimal(1))
+ self.assertEqual(c.logical_and(1, 1), d)
+ self.assertEqual(c.logical_and(Decimal(1), 1), d)
+ self.assertEqual(c.logical_and(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.logical_and, '1', 1)
+ self.assertRaises(TypeError, c.logical_and, 1, '1')
+
+ def test_logical_invert(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.logical_invert(Decimal(1000))
+ self.assertEqual(c.logical_invert(1000), d)
+ self.assertRaises(TypeError, c.logical_invert, '1000')
+
+ def test_logical_or(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.logical_or(Decimal(1), Decimal(1))
+ self.assertEqual(c.logical_or(1, 1), d)
+ self.assertEqual(c.logical_or(Decimal(1), 1), d)
+ self.assertEqual(c.logical_or(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.logical_or, '1', 1)
+ self.assertRaises(TypeError, c.logical_or, 1, '1')
+
+ def test_logical_xor(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.logical_xor(Decimal(1), Decimal(1))
+ self.assertEqual(c.logical_xor(1, 1), d)
+ self.assertEqual(c.logical_xor(Decimal(1), 1), d)
+ self.assertEqual(c.logical_xor(1, Decimal(1)), d)
+ self.assertRaises(TypeError, c.logical_xor, '1', 1)
+ self.assertRaises(TypeError, c.logical_xor, 1, '1')
+
+ def test_max(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.max(Decimal(1), Decimal(2))
+ self.assertEqual(c.max(1, 2), d)
+ self.assertEqual(c.max(Decimal(1), 2), d)
+ self.assertEqual(c.max(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.max, '1', 2)
+ self.assertRaises(TypeError, c.max, 1, '2')
+
+ def test_max_mag(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.max_mag(Decimal(1), Decimal(2))
+ self.assertEqual(c.max_mag(1, 2), d)
+ self.assertEqual(c.max_mag(Decimal(1), 2), d)
+ self.assertEqual(c.max_mag(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.max_mag, '1', 2)
+ self.assertRaises(TypeError, c.max_mag, 1, '2')
+
+ def test_min(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.min(Decimal(1), Decimal(2))
+ self.assertEqual(c.min(1, 2), d)
+ self.assertEqual(c.min(Decimal(1), 2), d)
+ self.assertEqual(c.min(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.min, '1', 2)
+ self.assertRaises(TypeError, c.min, 1, '2')
+
+ def test_min_mag(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.min_mag(Decimal(1), Decimal(2))
+ self.assertEqual(c.min_mag(1, 2), d)
+ self.assertEqual(c.min_mag(Decimal(1), 2), d)
+ self.assertEqual(c.min_mag(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.min_mag, '1', 2)
+ self.assertRaises(TypeError, c.min_mag, 1, '2')
+
+ def test_minus(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.minus(Decimal(10))
+ self.assertEqual(c.minus(10), d)
+ self.assertRaises(TypeError, c.minus, '10')
+
+ def test_multiply(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.multiply(Decimal(1), Decimal(2))
+ self.assertEqual(c.multiply(1, 2), d)
+ self.assertEqual(c.multiply(Decimal(1), 2), d)
+ self.assertEqual(c.multiply(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.multiply, '1', 2)
+ self.assertRaises(TypeError, c.multiply, 1, '2')
+
+ def test_next_minus(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.next_minus(Decimal(10))
+ self.assertEqual(c.next_minus(10), d)
+ self.assertRaises(TypeError, c.next_minus, '10')
+
+ def test_next_plus(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.next_plus(Decimal(10))
+ self.assertEqual(c.next_plus(10), d)
+ self.assertRaises(TypeError, c.next_plus, '10')
+
+ def test_next_toward(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.next_toward(Decimal(1), Decimal(2))
+ self.assertEqual(c.next_toward(1, 2), d)
+ self.assertEqual(c.next_toward(Decimal(1), 2), d)
+ self.assertEqual(c.next_toward(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.next_toward, '1', 2)
+ self.assertRaises(TypeError, c.next_toward, 1, '2')
+
+ def test_normalize(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.normalize(Decimal(10))
+ self.assertEqual(c.normalize(10), d)
+ self.assertRaises(TypeError, c.normalize, '10')
+
+ def test_number_class(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ self.assertEqual(c.number_class(123), c.number_class(Decimal(123)))
+ self.assertEqual(c.number_class(0), c.number_class(Decimal(0)))
+ self.assertEqual(c.number_class(-45), c.number_class(Decimal(-45)))
+
+ def test_plus(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.plus(Decimal(10))
+ self.assertEqual(c.plus(10), d)
+ self.assertRaises(TypeError, c.plus, '10')
+
+ def test_power(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.power(Decimal(1), Decimal(4))
+ self.assertEqual(c.power(1, 4), d)
+ self.assertEqual(c.power(Decimal(1), 4), d)
+ self.assertEqual(c.power(1, Decimal(4)), d)
+ self.assertEqual(c.power(Decimal(1), Decimal(4)), d)
+ self.assertRaises(TypeError, c.power, '1', 4)
+ self.assertRaises(TypeError, c.power, 1, '4')
+ self.assertEqual(c.power(modulo=5, b=8, a=2), 1)
+
+ def test_quantize(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.quantize(Decimal(1), Decimal(2))
+ self.assertEqual(c.quantize(1, 2), d)
+ self.assertEqual(c.quantize(Decimal(1), 2), d)
+ self.assertEqual(c.quantize(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.quantize, '1', 2)
+ self.assertRaises(TypeError, c.quantize, 1, '2')
+
+ def test_remainder(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.remainder(Decimal(1), Decimal(2))
+ self.assertEqual(c.remainder(1, 2), d)
+ self.assertEqual(c.remainder(Decimal(1), 2), d)
+ self.assertEqual(c.remainder(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.remainder, '1', 2)
+ self.assertRaises(TypeError, c.remainder, 1, '2')
+
+ def test_remainder_near(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.remainder_near(Decimal(1), Decimal(2))
+ self.assertEqual(c.remainder_near(1, 2), d)
+ self.assertEqual(c.remainder_near(Decimal(1), 2), d)
+ self.assertEqual(c.remainder_near(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.remainder_near, '1', 2)
+ self.assertRaises(TypeError, c.remainder_near, 1, '2')
+
+ def test_rotate(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.rotate(Decimal(1), Decimal(2))
+ self.assertEqual(c.rotate(1, 2), d)
+ self.assertEqual(c.rotate(Decimal(1), 2), d)
+ self.assertEqual(c.rotate(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.rotate, '1', 2)
+ self.assertRaises(TypeError, c.rotate, 1, '2')
+
+ def test_sqrt(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.sqrt(Decimal(10))
+ self.assertEqual(c.sqrt(10), d)
+ self.assertRaises(TypeError, c.sqrt, '10')
+
+ def test_same_quantum(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.same_quantum(Decimal(1), Decimal(2))
+ self.assertEqual(c.same_quantum(1, 2), d)
+ self.assertEqual(c.same_quantum(Decimal(1), 2), d)
+ self.assertEqual(c.same_quantum(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.same_quantum, '1', 2)
+ self.assertRaises(TypeError, c.same_quantum, 1, '2')
+
+ def test_scaleb(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.scaleb(Decimal(1), Decimal(2))
+ self.assertEqual(c.scaleb(1, 2), d)
+ self.assertEqual(c.scaleb(Decimal(1), 2), d)
+ self.assertEqual(c.scaleb(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.scaleb, '1', 2)
+ self.assertRaises(TypeError, c.scaleb, 1, '2')
+
+ def test_shift(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.shift(Decimal(1), Decimal(2))
+ self.assertEqual(c.shift(1, 2), d)
+ self.assertEqual(c.shift(Decimal(1), 2), d)
+ self.assertEqual(c.shift(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.shift, '1', 2)
+ self.assertRaises(TypeError, c.shift, 1, '2')
+
+ def test_subtract(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.subtract(Decimal(1), Decimal(2))
+ self.assertEqual(c.subtract(1, 2), d)
+ self.assertEqual(c.subtract(Decimal(1), 2), d)
+ self.assertEqual(c.subtract(1, Decimal(2)), d)
+ self.assertRaises(TypeError, c.subtract, '1', 2)
+ self.assertRaises(TypeError, c.subtract, 1, '2')
+
+ def test_to_eng_string(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.to_eng_string(Decimal(10))
+ self.assertEqual(c.to_eng_string(10), d)
+ self.assertRaises(TypeError, c.to_eng_string, '10')
+
+ def test_to_sci_string(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.to_sci_string(Decimal(10))
+ self.assertEqual(c.to_sci_string(10), d)
+ self.assertRaises(TypeError, c.to_sci_string, '10')
+
+ def test_to_integral_exact(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.to_integral_exact(Decimal(10))
+ self.assertEqual(c.to_integral_exact(10), d)
+ self.assertRaises(TypeError, c.to_integral_exact, '10')
+
+ def test_to_integral_value(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+
+ c = Context()
+ d = c.to_integral_value(Decimal(10))
+ self.assertEqual(c.to_integral_value(10), d)
+ self.assertRaises(TypeError, c.to_integral_value, '10')
+ self.assertRaises(TypeError, c.to_integral_value, 10, 'x')
+
+class CContextAPItests(ContextAPItests):
+ decimal = C
+class PyContextAPItests(ContextAPItests):
+ decimal = P
+
+class ContextWithStatement(unittest.TestCase):
+ # Can't do these as docstrings until Python 2.6
+ # as doctest can't handle __future__ statements
+
+ def test_localcontext(self):
+ # Use a copy of the current context in the block
+ getcontext = self.decimal.getcontext
+ localcontext = self.decimal.localcontext
+
+ orig_ctx = getcontext()
+ with localcontext() as enter_ctx:
+ set_ctx = getcontext()
+ final_ctx = getcontext()
+ self.assertIs(orig_ctx, final_ctx, 'did not restore context correctly')
+ self.assertIsNot(orig_ctx, set_ctx, 'did not copy the context')
+ self.assertIs(set_ctx, enter_ctx, '__enter__ returned wrong context')
+
+ def test_localcontextarg(self):
+ # Use a copy of the supplied context in the block
+ Context = self.decimal.Context
+ getcontext = self.decimal.getcontext
+ localcontext = self.decimal.localcontext
+
+ localcontext = self.decimal.localcontext
+ orig_ctx = getcontext()
+ new_ctx = Context(prec=42)
+ with localcontext(new_ctx) as enter_ctx:
+ set_ctx = getcontext()
+ final_ctx = getcontext()
+ self.assertIs(orig_ctx, final_ctx, 'did not restore context correctly')
+ self.assertEqual(set_ctx.prec, new_ctx.prec, 'did not set correct context')
+ self.assertIsNot(new_ctx, set_ctx, 'did not copy the context')
+ self.assertIs(set_ctx, enter_ctx, '__enter__ returned wrong context')
+
+ def test_nested_with_statements(self):
+ # Use a copy of the supplied context in the block
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ getcontext = self.decimal.getcontext
+ localcontext = self.decimal.localcontext
+ Clamped = self.decimal.Clamped
+ Overflow = self.decimal.Overflow
+
+ orig_ctx = getcontext()
+ orig_ctx.clear_flags()
+ new_ctx = Context(Emax=384)
+ with localcontext() as c1:
+ self.assertEqual(c1.flags, orig_ctx.flags)
+ self.assertEqual(c1.traps, orig_ctx.traps)
+ c1.traps[Clamped] = True
+ c1.Emin = -383
+ self.assertNotEqual(orig_ctx.Emin, -383)
+ self.assertRaises(Clamped, c1.create_decimal, '0e-999')
+ self.assertTrue(c1.flags[Clamped])
+ with localcontext(new_ctx) as c2:
+ self.assertEqual(c2.flags, new_ctx.flags)
+ self.assertEqual(c2.traps, new_ctx.traps)
+ self.assertRaises(Overflow, c2.power, Decimal('3.4e200'), 2)
+ self.assertFalse(c2.flags[Clamped])
+ self.assertTrue(c2.flags[Overflow])
+ del c2
+ self.assertFalse(c1.flags[Overflow])
+ del c1
+ self.assertNotEqual(orig_ctx.Emin, -383)
+ self.assertFalse(orig_ctx.flags[Clamped])
+ self.assertFalse(orig_ctx.flags[Overflow])
+ self.assertFalse(new_ctx.flags[Clamped])
+ self.assertFalse(new_ctx.flags[Overflow])
+
+ def test_with_statements_gc1(self):
+ localcontext = self.decimal.localcontext
+
+ with localcontext() as c1:
+ del c1
+ with localcontext() as c2:
+ del c2
+ with localcontext() as c3:
+ del c3
+ with localcontext() as c4:
+ del c4
+
+ def test_with_statements_gc2(self):
+ localcontext = self.decimal.localcontext
+
+ with localcontext() as c1:
+ with localcontext(c1) as c2:
+ del c1
+ with localcontext(c2) as c3:
+ del c2
+ with localcontext(c3) as c4:
+ del c3
+ del c4
+
+ def test_with_statements_gc3(self):
+ Context = self.decimal.Context
+ localcontext = self.decimal.localcontext
+ getcontext = self.decimal.getcontext
+ setcontext = self.decimal.setcontext
+
+ with localcontext() as c1:
+ del c1
+ n1 = Context(prec=1)
+ setcontext(n1)
+ with localcontext(n1) as c2:
+ del n1
+ self.assertEqual(c2.prec, 1)
+ del c2
+ n2 = Context(prec=2)
+ setcontext(n2)
+ del n2
+ self.assertEqual(getcontext().prec, 2)
+ n3 = Context(prec=3)
+ setcontext(n3)
+ self.assertEqual(getcontext().prec, 3)
+ with localcontext(n3) as c3:
+ del n3
+ self.assertEqual(c3.prec, 3)
+ del c3
+ n4 = Context(prec=4)
+ setcontext(n4)
+ del n4
+ self.assertEqual(getcontext().prec, 4)
+ with localcontext() as c4:
+ self.assertEqual(c4.prec, 4)
+ del c4
+
+class CContextWithStatement(ContextWithStatement):
+ decimal = C
+class PyContextWithStatement(ContextWithStatement):
+ decimal = P
+
+class ContextFlags(unittest.TestCase):
+
+ def test_flags_irrelevant(self):
+ # check that the result (numeric result + flags raised) of an
+ # arithmetic operation doesn't depend on the current flags
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ Inexact = self.decimal.Inexact
+ Rounded = self.decimal.Rounded
+ Underflow = self.decimal.Underflow
+ Clamped = self.decimal.Clamped
+ Subnormal = self.decimal.Subnormal
+ ROUND_HALF_EVEN = self.decimal.ROUND_HALF_EVEN
+
+ def raise_error(context, flag):
+ if self.decimal == C:
+ context.flags[flag] = True
+ if context.traps[flag]:
+ raise flag
+ else:
+ context._raise_error(flag)
+
+ context = Context(prec=9, Emin = -425000000, Emax = 425000000,
+ rounding=ROUND_HALF_EVEN, traps=[], flags=[])
+
+ # operations that raise various flags, in the form (function, arglist)
+ operations = [
+ (context._apply, [Decimal("100E-425000010")]),
+ (context.sqrt, [Decimal(2)]),
+ (context.add, [Decimal("1.23456789"), Decimal("9.87654321")]),
+ (context.multiply, [Decimal("1.23456789"), Decimal("9.87654321")]),
+ (context.subtract, [Decimal("1.23456789"), Decimal("9.87654321")]),
+ ]
+
+ # try various flags individually, then a whole lot at once
+ flagsets = [[Inexact], [Rounded], [Underflow], [Clamped], [Subnormal],
+ [Inexact, Rounded, Underflow, Clamped, Subnormal]]
+
+ for fn, args in operations:
+ # find answer and flags raised using a clean context
+ context.clear_flags()
+ ans = fn(*args)
+ flags = [k for k, v in context.flags.items() if v]
+
+ for extra_flags in flagsets:
+ # set flags, before calling operation
+ context.clear_flags()
+ for flag in extra_flags:
+ raise_error(context, flag)
+ new_ans = fn(*args)
+
+ # flags that we expect to be set after the operation
+ expected_flags = list(flags)
+ for flag in extra_flags:
+ if flag not in expected_flags:
+ expected_flags.append(flag)
+ expected_flags.sort(key=id)
+
+ # flags we actually got
+ new_flags = [k for k,v in context.flags.items() if v]
+ new_flags.sort(key=id)
+
+ self.assertEqual(ans, new_ans,
+ "operation produces different answers depending on flags set: " +
+ "expected %s, got %s." % (ans, new_ans))
+ self.assertEqual(new_flags, expected_flags,
+ "operation raises different flags depending on flags set: " +
+ "expected %s, got %s" % (expected_flags, new_flags))
+
+ def test_flag_comparisons(self):
+ Context = self.decimal.Context
+ Inexact = self.decimal.Inexact
+ Rounded = self.decimal.Rounded
+
+ c = Context()
+
+ # Valid SignalDict
+ self.assertNotEqual(c.flags, c.traps)
+ self.assertNotEqual(c.traps, c.flags)
+
+ c.flags = c.traps
+ self.assertEqual(c.flags, c.traps)
+ self.assertEqual(c.traps, c.flags)
+
+ c.flags[Rounded] = True
+ c.traps = c.flags
+ self.assertEqual(c.flags, c.traps)
+ self.assertEqual(c.traps, c.flags)
+
+ d = {}
+ d.update(c.flags)
+ self.assertEqual(d, c.flags)
+ self.assertEqual(c.flags, d)
+
+ d[Inexact] = True
+ self.assertNotEqual(d, c.flags)
+ self.assertNotEqual(c.flags, d)
+
+ # Invalid SignalDict
+ d = {Inexact:False}
+ self.assertNotEqual(d, c.flags)
+ self.assertNotEqual(c.flags, d)
+
+ d = ["xyz"]
+ self.assertNotEqual(d, c.flags)
+ self.assertNotEqual(c.flags, d)
+
+ @requires_IEEE_754
+ def test_float_operation(self):
+ Decimal = self.decimal.Decimal
+ FloatOperation = self.decimal.FloatOperation
+ localcontext = self.decimal.localcontext
+
+ with localcontext() as c:
+ ##### trap is off by default
+ self.assertFalse(c.traps[FloatOperation])
+
+ # implicit conversion sets the flag
+ c.clear_flags()
+ self.assertEqual(Decimal(7.5), 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ self.assertEqual(c.create_decimal(7.5), 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ # explicit conversion does not set the flag
+ c.clear_flags()
+ x = Decimal.from_float(7.5)
+ self.assertFalse(c.flags[FloatOperation])
+ # comparison sets the flag
+ self.assertEqual(x, 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ x = c.create_decimal_from_float(7.5)
+ self.assertFalse(c.flags[FloatOperation])
+ self.assertEqual(x, 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ ##### set the trap
+ c.traps[FloatOperation] = True
+
+ # implicit conversion raises
+ c.clear_flags()
+ self.assertRaises(FloatOperation, Decimal, 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ self.assertRaises(FloatOperation, c.create_decimal, 7.5)
+ self.assertTrue(c.flags[FloatOperation])
+
+ # explicit conversion is silent
+ c.clear_flags()
+ x = Decimal.from_float(7.5)
+ self.assertFalse(c.flags[FloatOperation])
+
+ c.clear_flags()
+ x = c.create_decimal_from_float(7.5)
+ self.assertFalse(c.flags[FloatOperation])
+
+ def test_float_comparison(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ FloatOperation = self.decimal.FloatOperation
+ localcontext = self.decimal.localcontext
+
+ def assert_attr(a, b, attr, context, signal=None):
+ context.clear_flags()
+ f = getattr(a, attr)
+ if signal == FloatOperation:
+ self.assertRaises(signal, f, b)
+ else:
+ self.assertIs(f(b), True)
+ self.assertTrue(context.flags[FloatOperation])
+
+ small_d = Decimal('0.25')
+ big_d = Decimal('3.0')
+ small_f = 0.25
+ big_f = 3.0
+
+ zero_d = Decimal('0.0')
+ neg_zero_d = Decimal('-0.0')
+ zero_f = 0.0
+ neg_zero_f = -0.0
+
+ inf_d = Decimal('Infinity')
+ neg_inf_d = Decimal('-Infinity')
+ inf_f = float('inf')
+ neg_inf_f = float('-inf')
+
+ def doit(c, signal=None):
+ # Order
+ for attr in '__lt__', '__le__':
+ assert_attr(small_d, big_f, attr, c, signal)
+
+ for attr in '__gt__', '__ge__':
+ assert_attr(big_d, small_f, attr, c, signal)
+
+ # Equality
+ assert_attr(small_d, small_f, '__eq__', c, None)
+
+ assert_attr(neg_zero_d, neg_zero_f, '__eq__', c, None)
+ assert_attr(neg_zero_d, zero_f, '__eq__', c, None)
+
+ assert_attr(zero_d, neg_zero_f, '__eq__', c, None)
+ assert_attr(zero_d, zero_f, '__eq__', c, None)
+
+ assert_attr(neg_inf_d, neg_inf_f, '__eq__', c, None)
+ assert_attr(inf_d, inf_f, '__eq__', c, None)
+
+ # Inequality
+ assert_attr(small_d, big_f, '__ne__', c, None)
+
+ assert_attr(Decimal('0.1'), 0.1, '__ne__', c, None)
+
+ assert_attr(neg_inf_d, inf_f, '__ne__', c, None)
+ assert_attr(inf_d, neg_inf_f, '__ne__', c, None)
+
+ assert_attr(Decimal('NaN'), float('nan'), '__ne__', c, None)
+
+ def test_containers(c, signal=None):
+ c.clear_flags()
+ s = set([100.0, Decimal('100.0')])
+ self.assertEqual(len(s), 1)
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ if signal:
+ self.assertRaises(signal, sorted, [1.0, Decimal('10.0')])
+ else:
+ s = sorted([10.0, Decimal('10.0')])
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ b = 10.0 in [Decimal('10.0'), 1.0]
+ self.assertTrue(c.flags[FloatOperation])
+
+ c.clear_flags()
+ b = 10.0 in {Decimal('10.0'):'a', 1.0:'b'}
+ self.assertTrue(c.flags[FloatOperation])
+
+ nc = Context()
+ with localcontext(nc) as c:
+ self.assertFalse(c.traps[FloatOperation])
+ doit(c, signal=None)
+ test_containers(c, signal=None)
+
+ c.traps[FloatOperation] = True
+ doit(c, signal=FloatOperation)
+ test_containers(c, signal=FloatOperation)
+
+ def test_float_operation_default(self):
+ Decimal = self.decimal.Decimal
+ Context = self.decimal.Context
+ Inexact = self.decimal.Inexact
+ FloatOperation= self.decimal.FloatOperation
+
+ context = Context()
+ self.assertFalse(context.flags[FloatOperation])
+ self.assertFalse(context.traps[FloatOperation])
+
+ context.clear_traps()
+ context.traps[Inexact] = True
+ context.traps[FloatOperation] = True
+ self.assertTrue(context.traps[FloatOperation])
+ self.assertTrue(context.traps[Inexact])
+
+class CContextFlags(ContextFlags):
+ decimal = C
+class PyContextFlags(ContextFlags):
+ decimal = P
+
+class SpecialContexts(unittest.TestCase):
+ """Test the context templates."""
+
+ def test_context_templates(self):
+ BasicContext = self.decimal.BasicContext
+ ExtendedContext = self.decimal.ExtendedContext
+ getcontext = self.decimal.getcontext
+ setcontext = self.decimal.setcontext
+ InvalidOperation = self.decimal.InvalidOperation
+ DivisionByZero = self.decimal.DivisionByZero
+ Overflow = self.decimal.Overflow
+ Underflow = self.decimal.Underflow
+ Clamped = self.decimal.Clamped
+
+ assert_signals(self, BasicContext, 'traps',
+ [InvalidOperation, DivisionByZero, Overflow, Underflow, Clamped]
+ )
+
+ savecontext = getcontext().copy()
+ basic_context_prec = BasicContext.prec
+ extended_context_prec = ExtendedContext.prec
+
+ ex = None
+ try:
+ BasicContext.prec = ExtendedContext.prec = 441
+ for template in BasicContext, ExtendedContext:
+ setcontext(template)
+ c = getcontext()
+ self.assertIsNot(c, template)
+ self.assertEqual(c.prec, 441)
+ except Exception as e:
+ ex = e.__class__
+ finally:
+ BasicContext.prec = basic_context_prec
+ ExtendedContext.prec = extended_context_prec
+ setcontext(savecontext)
+ if ex:
+ raise ex
+
+ def test_default_context(self):
+ DefaultContext = self.decimal.DefaultContext
+ BasicContext = self.decimal.BasicContext
+ ExtendedContext = self.decimal.ExtendedContext
+ getcontext = self.decimal.getcontext
+ setcontext = self.decimal.setcontext
+ InvalidOperation = self.decimal.InvalidOperation
+ DivisionByZero = self.decimal.DivisionByZero
+ Overflow = self.decimal.Overflow
+
+ self.assertEqual(BasicContext.prec, 9)
+ self.assertEqual(ExtendedContext.prec, 9)
+
+ assert_signals(self, DefaultContext, 'traps',
+ [InvalidOperation, DivisionByZero, Overflow]
+ )
+
+ savecontext = getcontext().copy()
+ default_context_prec = DefaultContext.prec
+
+ ex = None
+ try:
+ c = getcontext()
+ saveprec = c.prec
+
+ DefaultContext.prec = 961
+ c = getcontext()
+ self.assertEqual(c.prec, saveprec)
+
+ setcontext(DefaultContext)
+ c = getcontext()
+ self.assertIsNot(c, DefaultContext)
+ self.assertEqual(c.prec, 961)
+ except Exception as e:
+ ex = e.__class__
+ finally:
+ DefaultContext.prec = default_context_prec
+ setcontext(savecontext)
+ if ex:
+ raise ex
+
+class CSpecialContexts(SpecialContexts):
+ decimal = C
+class PySpecialContexts(SpecialContexts):
+ decimal = P
+
+class ContextInputValidation(unittest.TestCase):
+
+ def test_invalid_context(self):
+ Context = self.decimal.Context
+ DefaultContext = self.decimal.DefaultContext
+
+ c = DefaultContext.copy()
+
+ # prec, Emax
+ for attr in ['prec', 'Emax']:
+ setattr(c, attr, 999999)
+ self.assertEqual(getattr(c, attr), 999999)
+ self.assertRaises(ValueError, setattr, c, attr, -1)
+ self.assertRaises(TypeError, setattr, c, attr, 'xyz')
+
+ # Emin
+ setattr(c, 'Emin', -999999)
+ self.assertEqual(getattr(c, 'Emin'), -999999)
+ self.assertRaises(ValueError, setattr, c, 'Emin', 1)
+ self.assertRaises(TypeError, setattr, c, 'Emin', (1,2,3))
+
+ # rounding: always raise TypeError in order to get consistent
+ # exceptions across implementations. In decimal, rounding
+ # modes are strings, in _decimal they are integers. The idea
+ # is to view rounding as an abstract type and not mind the
+ # implementation details.
+ # Hence, a user should view the rounding modes as if they
+ # had been defined in a language that supports abstract
+ # data types, e.g. ocaml:
+ #
+ # type rounding = ROUND_DOWN | ROUND_HALF_UP | ... ;;
+ #
+ self.assertRaises(TypeError, setattr, c, 'rounding', -1)
+ self.assertRaises(TypeError, setattr, c, 'rounding', 9)
+ self.assertRaises(TypeError, setattr, c, 'rounding', 1.0)
+ self.assertRaises(TypeError, setattr, c, 'rounding', 'xyz')
+
+ # capitals, clamp
+ for attr in ['capitals', 'clamp']:
+ self.assertRaises(ValueError, setattr, c, attr, -1)
+ self.assertRaises(ValueError, setattr, c, attr, 2)
+ self.assertRaises(TypeError, setattr, c, attr, [1,2,3])
+
+ # Invalid attribute
+ self.assertRaises(AttributeError, setattr, c, 'emax', 100)
+
+ # Invalid signal dict
+ self.assertRaises(TypeError, setattr, c, 'flags', [])
+ self.assertRaises(KeyError, setattr, c, 'flags', {})
+ self.assertRaises(KeyError, setattr, c, 'traps',
+ {'InvalidOperation':0})
+
+ # Attributes cannot be deleted
+ for attr in ['prec', 'Emax', 'Emin', 'rounding', 'capitals', 'clamp',
+ 'flags', 'traps']:
+ self.assertRaises(AttributeError, c.__delattr__, attr)
+
+ # Invalid attributes
+ self.assertRaises(TypeError, getattr, c, 9)
+ self.assertRaises(TypeError, setattr, c, 9)
+
+ # Invalid values in constructor
+ self.assertRaises(TypeError, Context, rounding=999999)
+ self.assertRaises(TypeError, Context, rounding='xyz')
+ self.assertRaises(ValueError, Context, clamp=2)
+ self.assertRaises(ValueError, Context, capitals=-1)
+ self.assertRaises(KeyError, Context, flags=["P"])
+ self.assertRaises(KeyError, Context, traps=["Q"])
+
+ # Type error in conversion
+ self.assertRaises(TypeError, Context, flags=(0,1))
+ self.assertRaises(TypeError, Context, traps=(1,0))
+
+class CContextInputValidation(ContextInputValidation):
+ decimal = C
+class PyContextInputValidation(ContextInputValidation):
+ decimal = P
+
+class ContextSubclassing(unittest.TestCase):
+
+ def test_context_subclassing(self):
+ decimal = self.decimal
+ Decimal = decimal.Decimal
+ Context = decimal.Context
+ ROUND_HALF_EVEN = decimal.ROUND_HALF_EVEN
+ ROUND_DOWN = decimal.ROUND_DOWN
+ Clamped = decimal.Clamped
+ DivisionByZero = decimal.DivisionByZero
+ Inexact = decimal.Inexact
+ Overflow = decimal.Overflow
+ Rounded = decimal.Rounded
+ Subnormal = decimal.Subnormal
+ Underflow = decimal.Underflow
+ InvalidOperation = decimal.InvalidOperation
+
+ class MyContext(Context):
+ def __init__(self, prec=None, rounding=None, Emin=None, Emax=None,
+ capitals=None, clamp=None, flags=None,
+ traps=None):
+ Context.__init__(self)
+ if prec is not None:
+ self.prec = prec
+ if rounding is not None:
+ self.rounding = rounding
+ if Emin is not None:
+ self.Emin = Emin
+ if Emax is not None:
+ self.Emax = Emax
+ if capitals is not None:
+ self.capitals = capitals
+ if clamp is not None:
+ self.clamp = clamp
+ if flags is not None:
+ if isinstance(flags, list):
+ flags = {v:(v in flags) for v in OrderedSignals[decimal] + flags}
+ self.flags = flags
+ if traps is not None:
+ if isinstance(traps, list):
+ traps = {v:(v in traps) for v in OrderedSignals[decimal] + traps}
+ self.traps = traps
+
+ c = Context()
+ d = MyContext()
+ for attr in ('prec', 'rounding', 'Emin', 'Emax', 'capitals', 'clamp',
+ 'flags', 'traps'):
+ self.assertEqual(getattr(c, attr), getattr(d, attr))
+
+ # prec
+ self.assertRaises(ValueError, MyContext, **{'prec':-1})
+ c = MyContext(prec=1)
+ self.assertEqual(c.prec, 1)
+ self.assertRaises(InvalidOperation, c.quantize, Decimal('9e2'), 0)
+
+ # rounding
+ self.assertRaises(TypeError, MyContext, **{'rounding':'XYZ'})
+ c = MyContext(rounding=ROUND_DOWN, prec=1)
+ self.assertEqual(c.rounding, ROUND_DOWN)
+ self.assertEqual(c.plus(Decimal('9.9')), 9)
+
+ # Emin
+ self.assertRaises(ValueError, MyContext, **{'Emin':5})
+ c = MyContext(Emin=-1, prec=1)
+ self.assertEqual(c.Emin, -1)
+ x = c.add(Decimal('1e-99'), Decimal('2.234e-2000'))
+ self.assertEqual(x, Decimal('0.0'))
+ for signal in (Inexact, Underflow, Subnormal, Rounded, Clamped):
+ self.assertTrue(c.flags[signal])
+
+ # Emax
+ self.assertRaises(ValueError, MyContext, **{'Emax':-1})
+ c = MyContext(Emax=1, prec=1)
+ self.assertEqual(c.Emax, 1)
+ self.assertRaises(Overflow, c.add, Decimal('1e99'), Decimal('2.234e2000'))
+ if self.decimal == C:
+ for signal in (Inexact, Overflow, Rounded):
+ self.assertTrue(c.flags[signal])
+
+ # capitals
+ self.assertRaises(ValueError, MyContext, **{'capitals':-1})
+ c = MyContext(capitals=0)
+ self.assertEqual(c.capitals, 0)
+ x = c.create_decimal('1E222')
+ self.assertEqual(c.to_sci_string(x), '1e+222')
+
+ # clamp
+ self.assertRaises(ValueError, MyContext, **{'clamp':2})
+ c = MyContext(clamp=1, Emax=99)
+ self.assertEqual(c.clamp, 1)
+ x = c.plus(Decimal('1e99'))
+ self.assertEqual(str(x), '1.000000000000000000000000000E+99')
+
+ # flags
+ self.assertRaises(TypeError, MyContext, **{'flags':'XYZ'})
+ c = MyContext(flags=[Rounded, DivisionByZero])
+ for signal in (Rounded, DivisionByZero):
+ self.assertTrue(c.flags[signal])
+ c.clear_flags()
+ for signal in OrderedSignals[decimal]:
+ self.assertFalse(c.flags[signal])
+
+ # traps
+ self.assertRaises(TypeError, MyContext, **{'traps':'XYZ'})
+ c = MyContext(traps=[Rounded, DivisionByZero])
+ for signal in (Rounded, DivisionByZero):
+ self.assertTrue(c.traps[signal])
+ c.clear_traps()
+ for signal in OrderedSignals[decimal]:
+ self.assertFalse(c.traps[signal])
+
+class CContextSubclassing(ContextSubclassing):
+ decimal = C
+class PyContextSubclassing(ContextSubclassing):
+ decimal = P
+
+@skip_if_extra_functionality
+class CheckAttributes(unittest.TestCase):
+
+ def test_module_attributes(self):
+
+ # Architecture dependent context limits
+ self.assertEqual(C.MAX_PREC, P.MAX_PREC)
+ self.assertEqual(C.MAX_EMAX, P.MAX_EMAX)
+ self.assertEqual(C.MIN_EMIN, P.MIN_EMIN)
+ self.assertEqual(C.MIN_ETINY, P.MIN_ETINY)
+
+ self.assertTrue(C.HAVE_THREADS is True or C.HAVE_THREADS is False)
+ self.assertTrue(P.HAVE_THREADS is True or P.HAVE_THREADS is False)
+
+ self.assertEqual(C.__version__, P.__version__)
+
+ x = dir(C)
+ y = [s for s in dir(P) if '__' in s or not s.startswith('_')]
+ self.assertEqual(set(x) - set(y), {'MallocError'})
+
+ def test_context_attributes(self):
+
+ x = [s for s in dir(C.Context()) if '__' in s or not s.startswith('_')]
+ y = [s for s in dir(P.Context()) if '__' in s or not s.startswith('_')]
+ self.assertEqual(set(x) - set(y), set())
+
+ def test_decimal_attributes(self):
+
+ x = [s for s in dir(C.Decimal(9)) if '__' in s or not s.startswith('_')]
+ y = [s for s in dir(C.Decimal(9)) if '__' in s or not s.startswith('_')]
+ self.assertEqual(set(x) - set(y), set())
+
+class Coverage(unittest.TestCase):
+
+ def test_adjusted(self):
+ Decimal = self.decimal.Decimal
+
+ self.assertEqual(Decimal('1234e9999').adjusted(), 10002)
+ # XXX raise?
+ self.assertEqual(Decimal('nan').adjusted(), 0)
+ self.assertEqual(Decimal('inf').adjusted(), 0)
+
+ def test_canonical(self):
+ Decimal = self.decimal.Decimal
+ getcontext = self.decimal.getcontext
+
+ x = Decimal(9).canonical()
+ self.assertEqual(x, 9)
+
+ c = getcontext()
+ x = c.canonical(Decimal(9))
+ self.assertEqual(x, 9)
+
+ def test_context_repr(self):
+ c = self.decimal.DefaultContext.copy()
+
+ c.prec = 425000000
+ c.Emax = 425000000
+ c.Emin = -425000000
+ c.rounding = self.decimal.ROUND_HALF_DOWN
+ c.capitals = 0
+ c.clamp = 1
+ for sig in OrderedSignals[self.decimal]:
+ c.flags[sig] = False
+ c.traps[sig] = False
+
+ s = c.__repr__()
+ t = "Context(prec=425000000, rounding=ROUND_HALF_DOWN, " \
+ "Emin=-425000000, Emax=425000000, capitals=0, clamp=1, " \
+ "flags=[], traps=[])"
+ self.assertEqual(s, t)
+
+ def test_implicit_context(self):
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+
+ with localcontext() as c:
+ c.prec = 1
+ c.Emax = 1
+ c.Emin = -1
+
+ # abs
+ self.assertEqual(abs(Decimal("-10")), 10)
+ # add
+ self.assertEqual(Decimal("7") + 1, 8)
+ # divide
+ self.assertEqual(Decimal("10") / 5, 2)
+ # divide_int
+ self.assertEqual(Decimal("10") // 7, 1)
+ # fma
+ self.assertEqual(Decimal("1.2").fma(Decimal("0.01"), 1), 1)
+ self.assertIs(Decimal("NaN").fma(7, 1).is_nan(), True)
+ # three arg power
+ self.assertEqual(pow(Decimal(10), 2, 7), 2)
+ # exp
+ self.assertEqual(Decimal("1.01").exp(), 3)
+ # is_normal
+ self.assertIs(Decimal("0.01").is_normal(), False)
+ # is_subnormal
+ self.assertIs(Decimal("0.01").is_subnormal(), True)
+ # ln
+ self.assertEqual(Decimal("20").ln(), 3)
+ # log10
+ self.assertEqual(Decimal("20").log10(), 1)
+ # logb
+ self.assertEqual(Decimal("580").logb(), 2)
+ # logical_invert
+ self.assertEqual(Decimal("10").logical_invert(), 1)
+ # minus
+ self.assertEqual(-Decimal("-10"), 10)
+ # multiply
+ self.assertEqual(Decimal("2") * 4, 8)
+ # next_minus
+ self.assertEqual(Decimal("10").next_minus(), 9)
+ # next_plus
+ self.assertEqual(Decimal("10").next_plus(), Decimal('2E+1'))
+ # normalize
+ self.assertEqual(Decimal("-10").normalize(), Decimal('-1E+1'))
+ # number_class
+ self.assertEqual(Decimal("10").number_class(), '+Normal')
+ # plus
+ self.assertEqual(+Decimal("-1"), -1)
+ # remainder
+ self.assertEqual(Decimal("10") % 7, 3)
+ # subtract
+ self.assertEqual(Decimal("10") - 7, 3)
+ # to_integral_exact
+ self.assertEqual(Decimal("1.12345").to_integral_exact(), 1)
+
+ # Boolean functions
+ self.assertTrue(Decimal("1").is_canonical())
+ self.assertTrue(Decimal("1").is_finite())
+ self.assertTrue(Decimal("1").is_finite())
+ self.assertTrue(Decimal("snan").is_snan())
+ self.assertTrue(Decimal("-1").is_signed())
+ self.assertTrue(Decimal("0").is_zero())
+ self.assertTrue(Decimal("0").is_zero())
+
+ # Copy
+ with localcontext() as c:
+ c.prec = 10000
+ x = 1228 ** 1523
+ y = -Decimal(x)
+
+ z = y.copy_abs()
+ self.assertEqual(z, x)
+
+ z = y.copy_negate()
+ self.assertEqual(z, x)
+
+ z = y.copy_sign(Decimal(1))
+ self.assertEqual(z, x)
+
+ def test_divmod(self):
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+ InvalidOperation = self.decimal.InvalidOperation
+ DivisionByZero = self.decimal.DivisionByZero
+
+ with localcontext() as c:
+ q, r = divmod(Decimal("10912837129"), 1001)
+ self.assertEqual(q, Decimal('10901935'))
+ self.assertEqual(r, Decimal('194'))
+
+ q, r = divmod(Decimal("NaN"), 7)
+ self.assertTrue(q.is_nan() and r.is_nan())
+
+ c.traps[InvalidOperation] = False
+ q, r = divmod(Decimal("NaN"), 7)
+ self.assertTrue(q.is_nan() and r.is_nan())
+
+ c.traps[InvalidOperation] = False
+ c.clear_flags()
+ q, r = divmod(Decimal("inf"), Decimal("inf"))
+ self.assertTrue(q.is_nan() and r.is_nan())
+ self.assertTrue(c.flags[InvalidOperation])
+
+ c.clear_flags()
+ q, r = divmod(Decimal("inf"), 101)
+ self.assertTrue(q.is_infinite() and r.is_nan())
+ self.assertTrue(c.flags[InvalidOperation])
+
+ c.clear_flags()
+ q, r = divmod(Decimal(0), 0)
+ self.assertTrue(q.is_nan() and r.is_nan())
+ self.assertTrue(c.flags[InvalidOperation])
+
+ c.traps[DivisionByZero] = False
+ c.clear_flags()
+ q, r = divmod(Decimal(11), 0)
+ self.assertTrue(q.is_infinite() and r.is_nan())
+ self.assertTrue(c.flags[InvalidOperation] and
+ c.flags[DivisionByZero])
+
+ def test_power(self):
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+ Overflow = self.decimal.Overflow
+ Rounded = self.decimal.Rounded
+
+ with localcontext() as c:
+ c.prec = 3
+ c.clear_flags()
+ self.assertEqual(Decimal("1.0") ** 100, Decimal('1.00'))
+ self.assertTrue(c.flags[Rounded])
+
+ c.prec = 1
+ c.Emax = 1
+ c.Emin = -1
+ c.clear_flags()
+ c.traps[Overflow] = False
+ self.assertEqual(Decimal(10000) ** Decimal("0.5"), Decimal('inf'))
+ self.assertTrue(c.flags[Overflow])
+
+ def test_quantize(self):
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+ InvalidOperation = self.decimal.InvalidOperation
+
+ with localcontext() as c:
+ c.prec = 1
+ c.Emax = 1
+ c.Emin = -1
+ c.traps[InvalidOperation] = False
+ x = Decimal(99).quantize(Decimal("1e1"))
+ self.assertTrue(x.is_nan())
+
+ def test_radix(self):
+ Decimal = self.decimal.Decimal
+ getcontext = self.decimal.getcontext
+
+ c = getcontext()
+ self.assertEqual(Decimal("1").radix(), 10)
+ self.assertEqual(c.radix(), 10)
+
+ def test_rop(self):
+ Decimal = self.decimal.Decimal
+
+ for attr in ('__radd__', '__rsub__', '__rmul__', '__rtruediv__',
+ '__rdivmod__', '__rmod__', '__rfloordiv__', '__rpow__'):
+ self.assertIs(getattr(Decimal("1"), attr)("xyz"), NotImplemented)
+
+ def test_round(self):
+ # Python3 behavior: round() returns Decimal
+ Decimal = self.decimal.Decimal
+ getcontext = self.decimal.getcontext
+
+ c = getcontext()
+ c.prec = 28
+
+ self.assertEqual(str(Decimal("9.99").__round__()), "10")
+ self.assertEqual(str(Decimal("9.99e-5").__round__()), "0")
+ self.assertEqual(str(Decimal("1.23456789").__round__(5)), "1.23457")
+ self.assertEqual(str(Decimal("1.2345").__round__(10)), "1.2345000000")
+ self.assertEqual(str(Decimal("1.2345").__round__(-10)), "0E+10")
+
+ self.assertRaises(TypeError, Decimal("1.23").__round__, "5")
+ self.assertRaises(TypeError, Decimal("1.23").__round__, 5, 8)
+
+ def test_create_decimal(self):
+ c = self.decimal.Context()
+ self.assertRaises(ValueError, c.create_decimal, ["%"])
+
+ def test_int(self):
+ Decimal = self.decimal.Decimal
+ localcontext = self.decimal.localcontext
+
+ with localcontext() as c:
+ c.prec = 9999
+ x = Decimal(1221**1271) / 10**3923
+ self.assertEqual(int(x), 1)
+ self.assertEqual(x.to_integral(), 2)
+
+ def test_copy(self):
+ Context = self.decimal.Context
+
+ c = Context()
+ c.prec = 10000
+ x = -(1172 ** 1712)
+
+ y = c.copy_abs(x)
+ self.assertEqual(y, -x)
+
+ y = c.copy_negate(x)
+ self.assertEqual(y, -x)
+
+ y = c.copy_sign(x, 1)
+ self.assertEqual(y, -x)
+
+class CCoverage(Coverage):
+ decimal = C
+class PyCoverage(Coverage):
+ decimal = P
+
+class PyFunctionality(unittest.TestCase):
+ """Extra functionality in decimal.py"""
+
+ def test_py_quantize_watchexp(self):
+ # watchexp functionality
+ Decimal = P.Decimal
+ localcontext = P.localcontext
+
+ with localcontext() as c:
+ c.prec = 1
+ c.Emax = 1
+ c.Emin = -1
+ x = Decimal(99999).quantize(Decimal("1e3"), watchexp=False)
+ self.assertEqual(x, Decimal('1.00E+5'))
+
+ def test_py_alternate_formatting(self):
+ # triples giving a format, a Decimal, and the expected result
+ Decimal = P.Decimal
+ localcontext = P.localcontext
+
+ test_values = [
+ # Issue 7094: Alternate formatting (specified by #)
+ ('.0e', '1.0', '1e+0'),
+ ('#.0e', '1.0', '1.e+0'),
+ ('.0f', '1.0', '1'),
+ ('#.0f', '1.0', '1.'),
+ ('g', '1.1', '1.1'),
+ ('#g', '1.1', '1.1'),
+ ('.0g', '1', '1'),
+ ('#.0g', '1', '1.'),
+ ('.0%', '1.0', '100%'),
+ ('#.0%', '1.0', '100.%'),
+ ]
+ for fmt, d, result in test_values:
+ self.assertEqual(format(Decimal(d), fmt), result)
+
+class PyWhitebox(unittest.TestCase):
+ """White box testing for decimal.py"""
+
+ def test_py_exact_power(self):
+ # Rarely exercised lines in _power_exact.
+ Decimal = P.Decimal
+ localcontext = P.localcontext
+
+ with localcontext() as c:
+ c.prec = 8
+ x = Decimal(2**16) ** Decimal("-0.5")
+ self.assertEqual(x, Decimal('0.00390625'))
+
+ x = Decimal(2**16) ** Decimal("-0.6")
+ self.assertEqual(x, Decimal('0.0012885819'))
+
+ x = Decimal("256e7") ** Decimal("-0.5")
+
+ x = Decimal(152587890625) ** Decimal('-0.0625')
+ self.assertEqual(x, Decimal("0.2"))
+
+ x = Decimal("152587890625e7") ** Decimal('-0.0625')
+
+ x = Decimal(5**2659) ** Decimal('-0.0625')
+
+ c.prec = 1
+ x = Decimal("152587890625") ** Decimal('-0.5')
+ c.prec = 201
+ x = Decimal(2**578) ** Decimal("-0.5")
+
+ def test_py_immutability_operations(self):
# Do operations and check that it didn't change change internal objects.
+ Decimal = P.Decimal
+ DefaultContext = P.DefaultContext
+ setcontext = P.setcontext
+
+ c = DefaultContext.copy()
+ c.traps = dict((s, 0) for s in OrderedSignals[P])
+ setcontext(c)
d1 = Decimal('-25e55')
b1 = Decimal('-25e55')
@@ -1649,715 +4219,727 @@
checkSameDec("to_eng_string")
checkSameDec("to_integral")
- def test_subclassing(self):
- # Different behaviours when subclassing Decimal
+ def test_py_decimal_id(self):
+ Decimal = P.Decimal
- class MyDecimal(Decimal):
- pass
+ d = Decimal(45)
+ e = Decimal(d)
+ self.assertEqual(str(e), '45')
+ self.assertNotEqual(id(d), id(e))
- d1 = MyDecimal(1)
- d2 = MyDecimal(2)
- d = d1 + d2
- self.assertIs(type(d), Decimal)
+ def test_py_rescale(self):
+ # Coverage
+ Decimal = P.Decimal
+ ROUND_UP = P.ROUND_UP
+ localcontext = P.localcontext
- d = d1.max(d2)
- self.assertIs(type(d), Decimal)
+ with localcontext() as c:
+ x = Decimal("NaN")._rescale(3, ROUND_UP)
+ self.assertTrue(x.is_nan())
- def test_implicit_context(self):
- # Check results when context given implicitly. (Issue 2478)
- c = getcontext()
- self.assertEqual(str(Decimal(0).sqrt()),
- str(c.sqrt(Decimal(0))))
+ def test_py__round(self):
+ # Coverage
+ Decimal = P.Decimal
+ ROUND_UP = P.ROUND_UP
- def test_conversions_from_int(self):
- # Check that methods taking a second Decimal argument will
- # always accept an integer in place of a Decimal.
- self.assertEqual(Decimal(4).compare(3),
- Decimal(4).compare(Decimal(3)))
- self.assertEqual(Decimal(4).compare_signal(3),
- Decimal(4).compare_signal(Decimal(3)))
- self.assertEqual(Decimal(4).compare_total(3),
- Decimal(4).compare_total(Decimal(3)))
- self.assertEqual(Decimal(4).compare_total_mag(3),
- Decimal(4).compare_total_mag(Decimal(3)))
- self.assertEqual(Decimal(10101).logical_and(1001),
- Decimal(10101).logical_and(Decimal(1001)))
- self.assertEqual(Decimal(10101).logical_or(1001),
- Decimal(10101).logical_or(Decimal(1001)))
- self.assertEqual(Decimal(10101).logical_xor(1001),
- Decimal(10101).logical_xor(Decimal(1001)))
- self.assertEqual(Decimal(567).max(123),
- Decimal(567).max(Decimal(123)))
- self.assertEqual(Decimal(567).max_mag(123),
- Decimal(567).max_mag(Decimal(123)))
- self.assertEqual(Decimal(567).min(123),
- Decimal(567).min(Decimal(123)))
- self.assertEqual(Decimal(567).min_mag(123),
- Decimal(567).min_mag(Decimal(123)))
- self.assertEqual(Decimal(567).next_toward(123),
- Decimal(567).next_toward(Decimal(123)))
- self.assertEqual(Decimal(1234).quantize(100),
- Decimal(1234).quantize(Decimal(100)))
- self.assertEqual(Decimal(768).remainder_near(1234),
- Decimal(768).remainder_near(Decimal(1234)))
- self.assertEqual(Decimal(123).rotate(1),
- Decimal(123).rotate(Decimal(1)))
- self.assertEqual(Decimal(1234).same_quantum(1000),
- Decimal(1234).same_quantum(Decimal(1000)))
- self.assertEqual(Decimal('9.123').scaleb(-100),
- Decimal('9.123').scaleb(Decimal(-100)))
- self.assertEqual(Decimal(456).shift(-1),
- Decimal(456).shift(Decimal(-1)))
+ self.assertRaises(ValueError, Decimal("3.1234")._round, 0, ROUND_UP)
- self.assertEqual(Decimal(-12).fma(Decimal(45), 67),
- Decimal(-12).fma(Decimal(45), Decimal(67)))
- self.assertEqual(Decimal(-12).fma(45, 67),
- Decimal(-12).fma(Decimal(45), Decimal(67)))
- self.assertEqual(Decimal(-12).fma(45, Decimal(67)),
- Decimal(-12).fma(Decimal(45), Decimal(67)))
+class CFunctionality(unittest.TestCase):
+ """Extra functionality in _decimal"""
+ @requires_extra_functionality
+ def test_c_ieee_context(self):
+ # issue 8786: Add support for IEEE 754 contexts to decimal module.
+ IEEEContext = C.IEEEContext
+ DECIMAL32 = C.DECIMAL32
+ DECIMAL64 = C.DECIMAL64
+ DECIMAL128 = C.DECIMAL128
-class DecimalPythonAPItests(unittest.TestCase):
+ def assert_rest(self, context):
+ self.assertEqual(context.clamp, 1)
+ assert_signals(self, context, 'traps', [])
+ assert_signals(self, context, 'flags', [])
- def test_abc(self):
- self.assertTrue(issubclass(Decimal, numbers.Number))
- self.assertFalse(issubclass(Decimal, numbers.Real))
- self.assertIsInstance(Decimal(0), numbers.Number)
- self.assertNotIsInstance(Decimal(0), numbers.Real)
+ c = IEEEContext(DECIMAL32)
+ self.assertEqual(c.prec, 7)
+ self.assertEqual(c.Emax, 96)
+ self.assertEqual(c.Emin, -95)
+ assert_rest(self, c)
- def test_pickle(self):
- d = Decimal('-3.141590000')
- p = pickle.dumps(d)
- e = pickle.loads(p)
- self.assertEqual(d, e)
+ c = IEEEContext(DECIMAL64)
+ self.assertEqual(c.prec, 16)
+ self.assertEqual(c.Emax, 384)
+ self.assertEqual(c.Emin, -383)
+ assert_rest(self, c)
- def test_int(self):
- for x in range(-250, 250):
- s = '%0.2f' % (x / 100.0)
- # should work the same as for floats
- self.assertEqual(int(Decimal(s)), int(float(s)))
- # should work the same as to_integral in the ROUND_DOWN mode
- d = Decimal(s)
- r = d.to_integral(ROUND_DOWN)
- self.assertEqual(Decimal(int(d)), r)
+ c = IEEEContext(DECIMAL128)
+ self.assertEqual(c.prec, 34)
+ self.assertEqual(c.Emax, 6144)
+ self.assertEqual(c.Emin, -6143)
+ assert_rest(self, c)
- self.assertRaises(ValueError, int, Decimal('-nan'))
- self.assertRaises(ValueError, int, Decimal('snan'))
- self.assertRaises(OverflowError, int, Decimal('inf'))
- self.assertRaises(OverflowError, int, Decimal('-inf'))
+ # Invalid values
+ self.assertRaises(OverflowError, IEEEContext, 2**63)
+ self.assertRaises(ValueError, IEEEContext, -1)
+ self.assertRaises(ValueError, IEEEContext, 1024)
- def test_trunc(self):
- for x in range(-250, 250):
- s = '%0.2f' % (x / 100.0)
- # should work the same as for floats
- self.assertEqual(int(Decimal(s)), int(float(s)))
- # should work the same as to_integral in the ROUND_DOWN mode
- d = Decimal(s)
- r = d.to_integral(ROUND_DOWN)
- self.assertEqual(Decimal(math.trunc(d)), r)
+ @requires_extra_functionality
+ def test_c_context(self):
+ Context = C.Context
- def test_from_float(self):
+ c = Context(flags=C.DecClamped, traps=C.DecRounded)
+ self.assertEqual(c._flags, C.DecClamped)
+ self.assertEqual(c._traps, C.DecRounded)
- class MyDecimal(Decimal):
- pass
-
- r = MyDecimal.from_float(0.1)
- self.assertEqual(type(r), MyDecimal)
- self.assertEqual(str(r),
- '0.1000000000000000055511151231257827021181583404541015625')
- bigint = 12345678901234567890123456789
- self.assertEqual(MyDecimal.from_float(bigint), MyDecimal(bigint))
- self.assertTrue(MyDecimal.from_float(float('nan')).is_qnan())
- self.assertTrue(MyDecimal.from_float(float('inf')).is_infinite())
- self.assertTrue(MyDecimal.from_float(float('-inf')).is_infinite())
- self.assertEqual(str(MyDecimal.from_float(float('nan'))),
- str(Decimal('NaN')))
- self.assertEqual(str(MyDecimal.from_float(float('inf'))),
- str(Decimal('Infinity')))
- self.assertEqual(str(MyDecimal.from_float(float('-inf'))),
- str(Decimal('-Infinity')))
- self.assertRaises(TypeError, MyDecimal.from_float, 'abc')
- for i in range(200):
- x = random.expovariate(0.01) * (random.random() * 2.0 - 1.0)
- self.assertEqual(x, float(MyDecimal.from_float(x))) # roundtrip
-
- def test_create_decimal_from_float(self):
- context = Context(prec=5, rounding=ROUND_DOWN)
- self.assertEqual(
- context.create_decimal_from_float(math.pi),
- Decimal('3.1415')
+ @requires_extra_functionality
+ def test_constants(self):
+ # Condition flags
+ cond = (
+ C.DecClamped, C.DecConversionSyntax, C.DecDivisionByZero,
+ C.DecDivisionImpossible, C.DecDivisionUndefined,
+ C.DecFpuError, C.DecInexact, C.DecInvalidContext,
+ C.DecInvalidOperation, C.DecMallocError,
+ C.DecFloatOperation, C.DecOverflow, C.DecRounded,
+ C.DecSubnormal, C.DecUnderflow
)
- context = Context(prec=5, rounding=ROUND_UP)
- self.assertEqual(
- context.create_decimal_from_float(math.pi),
- Decimal('3.1416')
- )
- context = Context(prec=5, traps=[Inexact])
+
+ # IEEEContext
+ self.assertEqual(C.DECIMAL32, 32)
+ self.assertEqual(C.DECIMAL64, 64)
+ self.assertEqual(C.DECIMAL128, 128)
+ self.assertEqual(C.IEEE_CONTEXT_MAX_BITS, 512)
+
+ # Rounding modes
+ for i, v in enumerate(RoundingModes[C]):
+ self.assertEqual(v, i)
+ self.assertEqual(C.ROUND_TRUNC, 8)
+
+ # Conditions
+ for i, v in enumerate(cond):
+ self.assertEqual(v, 1<<i)
+
+ self.assertEqual(C.DecIEEEInvalidOperation,
+ C.DecConversionSyntax|
+ C.DecDivisionImpossible|
+ C.DecDivisionUndefined|
+ C.DecFpuError|
+ C.DecInvalidContext|
+ C.DecInvalidOperation|
+ C.DecMallocError)
+
+ self.assertEqual(C.DecErrors,
+ C.DecIEEEInvalidOperation|
+ C.DecDivisionByZero)
+
+ self.assertEqual(C.DecTraps,
+ C.DecErrors|C.DecOverflow|C.DecUnderflow)
+
+class CWhitebox(unittest.TestCase):
+ """Whitebox testing for _decimal"""
+
+ def test_bignum(self):
+ # Not exactly whitebox, but too slow with pydecimal.
+
+ Decimal = C.Decimal
+ localcontext = C.localcontext
+
+ b1 = 10**35
+ b2 = 10**36
+ with localcontext() as c:
+ c.prec = 1000000
+ for i in range(5):
+ a = random.randrange(b1, b2)
+ b = random.randrange(1000, 1200)
+ x = a ** b
+ y = Decimal(a) ** Decimal(b)
+ self.assertEqual(x, y)
+
+ def test_invalid_construction(self):
+ self.assertRaises(TypeError, C.Decimal, 9, "xyz")
+
+ def test_c_input_restriction(self):
+ # Too large for _decimal to be converted exactly
+ Decimal = C.Decimal
+ InvalidOperation = C.InvalidOperation
+ Context = C.Context
+ localcontext = C.localcontext
+
+ with localcontext(Context()):
+ self.assertRaises(InvalidOperation, Decimal,
+ "1e9999999999999999999")
+
+ def test_c_context_repr(self):
+ # This test is _decimal-only because flags are not printed
+ # in the same order.
+ DefaultContext = C.DefaultContext
+ FloatOperation = C.FloatOperation
+ ROUND_HALF_DOWN = C.ROUND_HALF_DOWN
+
+ c = DefaultContext.copy()
+
+ c.prec = 425000000
+ c.Emax = 425000000
+ c.Emin = -425000000
+ c.rounding = ROUND_HALF_DOWN
+ c.capitals = 0
+ c.clamp = 1
+ for sig in OrderedSignals[C]:
+ c.flags[sig] = True
+ c.traps[sig] = True
+ c.flags[FloatOperation] = True
+ c.traps[FloatOperation] = True
+
+ s = c.__repr__()
+ t = "Context(prec=425000000, rounding=ROUND_HALF_DOWN, " \
+ "Emin=-425000000, Emax=425000000, capitals=0, clamp=1, " \
+ "flags=[Clamped, InvalidOperation, DivisionByZero, Inexact, " \
+ "FloatOperation, Overflow, Rounded, Subnormal, Underflow], " \
+ "traps=[Clamped, InvalidOperation, DivisionByZero, Inexact, " \
+ "FloatOperation, Overflow, Rounded, Subnormal, Underflow])"
+ self.assertEqual(s, t)
+
+ def test_c_context_errors(self):
+ Context = C.Context
+ InvalidOperation = C.InvalidOperation
+ Overflow = C.Overflow
+ FloatOperation = C.FloatOperation
+ localcontext = C.localcontext
+ getcontext = C.getcontext
+ setcontext = C.setcontext
+ HAVE_CONFIG_64 = (C.MAX_PREC > 425000000)
+
+ c = Context()
+
+ # SignalDict: input validation
+ self.assertRaises(KeyError, c.flags.__setitem__, 801, 0)
+ self.assertRaises(KeyError, c.traps.__setitem__, 801, 0)
+ self.assertRaises(ValueError, c.flags.__delitem__, Overflow)
+ self.assertRaises(ValueError, c.traps.__delitem__, InvalidOperation)
+ self.assertRaises(TypeError, setattr, c, 'flags', ['x'])
+ self.assertRaises(TypeError, setattr, c,'traps', ['y'])
+ self.assertRaises(KeyError, setattr, c, 'flags', {0:1})
+ self.assertRaises(KeyError, setattr, c, 'traps', {0:1})
+
+ # Test assignment from a signal dict with the correct length but
+ # one invalid key.
+ d = c.flags.copy()
+ del d[FloatOperation]
+ d["XYZ"] = 91283719
+ self.assertRaises(KeyError, setattr, c, 'flags', d)
+ self.assertRaises(KeyError, setattr, c, 'traps', d)
+
+ # Input corner cases
+ int_max = 2**63-1 if HAVE_CONFIG_64 else 2**31-1
+ gt_max_emax = 10**18 if HAVE_CONFIG_64 else 10**9
+
+ # prec, Emax, Emin
+ for attr in ['prec', 'Emax']:
+ self.assertRaises(ValueError, setattr, c, attr, gt_max_emax)
+ self.assertRaises(ValueError, setattr, c, 'Emin', -gt_max_emax)
+
+ # prec, Emax, Emin in context constructor
+ self.assertRaises(ValueError, Context, prec=gt_max_emax)
+ self.assertRaises(ValueError, Context, Emax=gt_max_emax)
+ self.assertRaises(ValueError, Context, Emin=-gt_max_emax)
+
+ # Overflow in conversion
+ self.assertRaises(OverflowError, Context, prec=int_max+1)
+ self.assertRaises(OverflowError, Context, Emax=int_max+1)
+ self.assertRaises(OverflowError, Context, Emin=-int_max-2)
+ self.assertRaises(OverflowError, Context, rounding=int_max+1)
+ self.assertRaises(OverflowError, Context, clamp=int_max+1)
+ self.assertRaises(OverflowError, Context, capitals=int_max+1)
+
+ # OverflowError, general ValueError
+ for attr in ('prec', 'Emin', 'Emax', 'capitals', 'clamp'):
+ self.assertRaises(OverflowError, setattr, c, attr, int_max+1)
+ self.assertRaises(OverflowError, setattr, c, attr, -int_max-2)
+ if sys.platform != 'win32':
+ self.assertRaises(ValueError, setattr, c, attr, int_max)
+ self.assertRaises(ValueError, setattr, c, attr, -int_max-1)
+
+ # OverflowError, general TypeError
+ for attr in ('rounding',):
+ self.assertRaises(OverflowError, setattr, c, attr, int_max+1)
+ self.assertRaises(OverflowError, setattr, c, attr, -int_max-2)
+ if sys.platform != 'win32':
+ self.assertRaises(TypeError, setattr, c, attr, int_max)
+ self.assertRaises(TypeError, setattr, c, attr, -int_max-1)
+
+ # OverflowError: _unsafe_setprec, _unsafe_setemin, _unsafe_setemax
+ if C.MAX_PREC == 425000000:
+ self.assertRaises(OverflowError, getattr(c, '_unsafe_setprec'),
+ int_max+1)
+ self.assertRaises(OverflowError, getattr(c, '_unsafe_setemax'),
+ int_max+1)
+ self.assertRaises(OverflowError, getattr(c, '_unsafe_setemin'),
+ -int_max-2)
+
+ # ValueError: _unsafe_setprec, _unsafe_setemin, _unsafe_setemax
+ if C.MAX_PREC == 425000000:
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setprec'), 0)
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setprec'),
+ 1070000001)
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setemax'), -1)
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setemax'),
+ 1070000001)
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setemin'),
+ -1070000001)
+ self.assertRaises(ValueError, getattr(c, '_unsafe_setemin'), 1)
+
+ # capitals, clamp
+ for attr in ['capitals', 'clamp']:
+ self.assertRaises(ValueError, setattr, c, attr, -1)
+ self.assertRaises(ValueError, setattr, c, attr, 2)
+ self.assertRaises(TypeError, setattr, c, attr, [1,2,3])
+ if HAVE_CONFIG_64:
+ self.assertRaises(ValueError, setattr, c, attr, 2**32)
+ self.assertRaises(ValueError, setattr, c, attr, 2**32+1)
+
+ # Invalid local context
+ self.assertRaises(TypeError, exec, 'with localcontext("xyz"): pass',
+ locals())
+
+ # setcontext
+ saved_context = getcontext()
+ self.assertRaises(TypeError, setcontext, "xyz")
+ setcontext(saved_context)
+
+ @requires_extra_functionality
+ def test_c_context_errors_extra(self):
+ Context = C.Context
+ InvalidOperation = C.InvalidOperation
+ Overflow = C.Overflow
+ localcontext = C.localcontext
+ getcontext = C.getcontext
+ setcontext = C.setcontext
+ HAVE_CONFIG_64 = (C.MAX_PREC > 425000000)
+
+ c = Context()
+
+ # Input corner cases
+ int_max = 2**63-1 if HAVE_CONFIG_64 else 2**31-1
+
+ # OverflowError, general ValueError
+ self.assertRaises(OverflowError, setattr, c, '_allcr', int_max+1)
+ self.assertRaises(OverflowError, setattr, c, '_allcr', -int_max-2)
+ if sys.platform != 'win32':
+ self.assertRaises(ValueError, setattr, c, '_allcr', int_max)
+ self.assertRaises(ValueError, setattr, c, '_allcr', -int_max-1)
+
+ # OverflowError, general TypeError
+ for attr in ('_flags', '_traps'):
+ self.assertRaises(OverflowError, setattr, c, attr, int_max+1)
+ self.assertRaises(OverflowError, setattr, c, attr, -int_max-2)
+ if sys.platform != 'win32':
+ self.assertRaises(TypeError, setattr, c, attr, int_max)
+ self.assertRaises(TypeError, setattr, c, attr, -int_max-1)
+
+ # _allcr
+ self.assertRaises(ValueError, setattr, c, '_allcr', -1)
+ self.assertRaises(ValueError, setattr, c, '_allcr', 2)
+ self.assertRaises(TypeError, setattr, c, '_allcr', [1,2,3])
+ if HAVE_CONFIG_64:
+ self.assertRaises(ValueError, setattr, c, '_allcr', 2**32)
+ self.assertRaises(ValueError, setattr, c, '_allcr', 2**32+1)
+
+ # _flags, _traps
+ for attr in ['_flags', '_traps']:
+ self.assertRaises(TypeError, setattr, c, attr, 999999)
+ self.assertRaises(TypeError, setattr, c, attr, 'x')
+
+ def test_c_valid_context(self):
+ # These tests are for code coverage in _decimal.
+ DefaultContext = C.DefaultContext
+ ROUND_HALF_UP = C.ROUND_HALF_UP
+ Clamped = C.Clamped
+ Underflow = C.Underflow
+ Inexact = C.Inexact
+ Rounded = C.Rounded
+ Subnormal = C.Subnormal
+
+ c = DefaultContext.copy()
+
+ # Exercise all getters and setters
+ c.prec = 34
+ c.rounding = ROUND_HALF_UP
+ c.Emax = 3000
+ c.Emin = -3000
+ c.capitals = 1
+ c.clamp = 0
+
+ self.assertEqual(c.prec, 34)
+ self.assertEqual(c.rounding, ROUND_HALF_UP)
+ self.assertEqual(c.Emin, -3000)
+ self.assertEqual(c.Emax, 3000)
+ self.assertEqual(c.capitals, 1)
+ self.assertEqual(c.clamp, 0)
+
+ self.assertEqual(c.Etiny(), -3033)
+ self.assertEqual(c.Etop(), 2967)
+
+ # Exercise all unsafe setters
+ if C.MAX_PREC == 425000000:
+ c._unsafe_setprec(999999999)
+ c._unsafe_setemax(999999999)
+ c._unsafe_setemin(-999999999)
+ self.assertEqual(c.prec, 999999999)
+ self.assertEqual(c.Emax, 999999999)
+ self.assertEqual(c.Emin, -999999999)
+
+ @requires_extra_functionality
+ def test_c_valid_context_extra(self):
+ DefaultContext = C.DefaultContext
+
+ c = DefaultContext.copy()
+ self.assertEqual(c._allcr, 1)
+ c._allcr = 0
+ self.assertEqual(c._allcr, 0)
+
+ def test_c_round(self):
+ # Restricted input.
+ Decimal = C.Decimal
+ InvalidOperation = C.InvalidOperation
+ localcontext = C.localcontext
+ MAX_EMAX = C.MAX_EMAX
+ MIN_ETINY = C.MIN_ETINY
+ int_max = 2**63-1 if C.MAX_PREC > 425000000 else 2**31-1
+
+ with localcontext() as c:
+ c.traps[InvalidOperation] = True
+ self.assertRaises(InvalidOperation, Decimal("1.23").__round__,
+ -int_max-1)
+ self.assertRaises(InvalidOperation, Decimal("1.23").__round__,
+ int_max)
+ self.assertRaises(InvalidOperation, Decimal("1").__round__,
+ int(MAX_EMAX+1))
+ self.assertRaises(C.InvalidOperation, Decimal("1").__round__,
+ -int(MIN_ETINY-1))
+ self.assertRaises(OverflowError, Decimal("1.23").__round__,
+ -int_max-2)
+ self.assertRaises(OverflowError, Decimal("1.23").__round__,
+ int_max+1)
+
+ def test_c_format(self):
+ # Restricted input
+ Decimal = C.Decimal
+ InvalidOperation = C.InvalidOperation
+ Rounded = C.Rounded
+ localcontext = C.localcontext
+ HAVE_CONFIG_64 = (C.MAX_PREC > 425000000)
+
+ self.assertRaises(TypeError, Decimal(1).__format__, "=10.10", [], 9)
+ self.assertRaises(TypeError, Decimal(1).__format__, "=10.10", 9)
+ self.assertRaises(TypeError, Decimal(1).__format__, [])
+
+ with localcontext() as c:
+ c.traps[InvalidOperation] = True
+ c.traps[Rounded] = True
+ self.assertRaises(ValueError, Decimal(1).__format__, "<>=10.10")
+ maxsize = 2**63-1 if HAVE_CONFIG_64 else 2**31-1
+ self.assertRaises(InvalidOperation, Decimal("1.23456789").__format__,
+ "=%d.1" % maxsize)
+
+ def test_c_integral(self):
+ Decimal = C.Decimal
+ Inexact = C.Inexact
+ ROUND_UP = C.ROUND_UP
+ localcontext = C.localcontext
+
+ x = Decimal(10)
+ self.assertEqual(x.to_integral(), 10)
+ self.assertRaises(TypeError, x.to_integral, '10')
+ self.assertRaises(TypeError, x.to_integral, 10, 'x')
+ self.assertRaises(TypeError, x.to_integral, 10)
+
+ self.assertEqual(x.to_integral_value(), 10)
+ self.assertRaises(TypeError, x.to_integral_value, '10')
+ self.assertRaises(TypeError, x.to_integral_value, 10, 'x')
+ self.assertRaises(TypeError, x.to_integral_value, 10)
+
+ self.assertEqual(x.to_integral_exact(), 10)
+ self.assertRaises(TypeError, x.to_integral_exact, '10')
+ self.assertRaises(TypeError, x.to_integral_exact, 10, 'x')
+ self.assertRaises(TypeError, x.to_integral_exact, 10)
+
+ with localcontext() as c:
+ x = Decimal("99999999999999999999999999.9").to_integral_value(ROUND_UP)
+ self.assertEqual(x, Decimal('100000000000000000000000000'))
+
+ x = Decimal("99999999999999999999999999.9").to_integral_exact(ROUND_UP)
+ self.assertEqual(x, Decimal('100000000000000000000000000'))
+
+ c.traps[Inexact] = True
+ self.assertRaises(Inexact, Decimal("999.9").to_integral_exact, ROUND_UP)
+
+ def test_c_funcs(self):
+ # Invalid arguments
+ Decimal = C.Decimal
+ InvalidOperation = C.InvalidOperation
+ DivisionByZero = C.DivisionByZero
+ ROUND_UP = C.ROUND_UP
+ getcontext = C.getcontext
+ localcontext = C.localcontext
+
+ self.assertEqual(Decimal('9.99e10').to_eng_string(), '99.9E+9')
+
+ self.assertRaises(TypeError, pow, Decimal(1), 2, "3")
+ self.assertRaises(TypeError, Decimal(9).number_class, "x", "y")
+ self.assertRaises(TypeError, Decimal(9).same_quantum, 3, "x", "y")
+
self.assertRaises(
- Inexact,
- context.create_decimal_from_float,
- math.pi
+ TypeError,
+ Decimal("1.23456789").quantize, Decimal('1e-100000'), []
)
- self.assertEqual(repr(context.create_decimal_from_float(-0.0)),
- "Decimal('-0')")
- self.assertEqual(repr(context.create_decimal_from_float(1.0)),
- "Decimal('1')")
- self.assertEqual(repr(context.create_decimal_from_float(10)),
- "Decimal('10')")
+ self.assertRaises(
+ TypeError,
+ Decimal("1.23456789").quantize, Decimal('1e-100000'), getcontext()
+ )
+ self.assertRaises(
+ TypeError,
+ Decimal("1.23456789").quantize, Decimal('1e-100000'), 10
+ )
+ self.assertRaises(
+ TypeError,
+ Decimal("1.23456789").quantize, Decimal('1e-100000'), ROUND_UP, 1000
+ )
-class ContextAPItests(unittest.TestCase):
+ with localcontext() as c:
+ c.clear_traps()
- def test_pickle(self):
- c = Context()
- e = pickle.loads(pickle.dumps(c))
- for k in vars(c):
- v1 = vars(c)[k]
- v2 = vars(e)[k]
- self.assertEqual(v1, v2)
+ # Invalid arguments
+ self.assertRaises(TypeError, c.copy_sign, Decimal(1), "x", "y")
+ self.assertRaises(TypeError, c.canonical, 200)
+ self.assertRaises(TypeError, c.is_canonical, 200)
+ self.assertRaises(TypeError, c.divmod, 9, 8, "x", "y")
+ self.assertRaises(TypeError, c.same_quantum, 9, 3, "x", "y")
- def test_equality_with_other_types(self):
- self.assertIn(Decimal(10), ['a', 1.0, Decimal(10), (1,2), {}])
- self.assertNotIn(Decimal(10), ['a', 1.0, (1,2), {}])
+ self.assertEqual(str(c.canonical(Decimal(200))), '200')
+ self.assertEqual(c.radix(), 10)
- def test_copy(self):
- # All copies should be deep
- c = Context()
- d = c.copy()
- self.assertNotEqual(id(c), id(d))
- self.assertNotEqual(id(c.flags), id(d.flags))
- self.assertNotEqual(id(c.traps), id(d.traps))
+ c.traps[DivisionByZero] = True
+ self.assertRaises(DivisionByZero, Decimal(9).__divmod__, 0)
+ self.assertRaises(DivisionByZero, c.divmod, 9, 0)
+ self.assertTrue(c.flags[InvalidOperation])
- def test__clamp(self):
- # In Python 3.2, the private attribute `_clamp` was made
- # public (issue 8540), with the old `_clamp` becoming a
- # property wrapping `clamp`. For the duration of Python 3.2
- # only, the attribute should be gettable/settable via both
- # `clamp` and `_clamp`; in Python 3.3, `_clamp` should be
- # removed.
- c = Context()
- with self.assertRaises(AttributeError):
- clamp_value = c._clamp
+ c.clear_flags()
+ c.traps[InvalidOperation] = True
+ self.assertRaises(InvalidOperation, Decimal(9).__divmod__, 0)
+ self.assertRaises(InvalidOperation, c.divmod, 9, 0)
+ self.assertTrue(c.flags[DivisionByZero])
- def test_abs(self):
- c = Context()
- d = c.abs(Decimal(-1))
- self.assertEqual(c.abs(-1), d)
- self.assertRaises(TypeError, c.abs, '-1')
+ c.traps[InvalidOperation] = True
+ c.prec = 2
+ self.assertRaises(InvalidOperation, pow, Decimal(1000), 1, 501)
- def test_add(self):
- c = Context()
- d = c.add(Decimal(1), Decimal(1))
- self.assertEqual(c.add(1, 1), d)
- self.assertEqual(c.add(Decimal(1), 1), d)
- self.assertEqual(c.add(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.add, '1', 1)
- self.assertRaises(TypeError, c.add, 1, '1')
+ @requires_extra_functionality
+ def test_c_context_templates(self):
+ self.assertEqual(
+ C.BasicContext._traps,
+ C.DecIEEEInvalidOperation|C.DecDivisionByZero|C.DecOverflow|
+ C.DecUnderflow|C.DecClamped
+ )
+ self.assertEqual(
+ C.DefaultContext._traps,
+ C.DecIEEEInvalidOperation|C.DecDivisionByZero|C.DecOverflow
+ )
- def test_compare(self):
- c = Context()
- d = c.compare(Decimal(1), Decimal(1))
- self.assertEqual(c.compare(1, 1), d)
- self.assertEqual(c.compare(Decimal(1), 1), d)
- self.assertEqual(c.compare(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.compare, '1', 1)
- self.assertRaises(TypeError, c.compare, 1, '1')
+ @requires_extra_functionality
+ def test_c_signal_dict(self):
- def test_compare_signal(self):
- c = Context()
- d = c.compare_signal(Decimal(1), Decimal(1))
- self.assertEqual(c.compare_signal(1, 1), d)
- self.assertEqual(c.compare_signal(Decimal(1), 1), d)
- self.assertEqual(c.compare_signal(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.compare_signal, '1', 1)
- self.assertRaises(TypeError, c.compare_signal, 1, '1')
+ # SignalDict coverage
+ Context = C.Context
+ DefaultContext = C.DefaultContext
- def test_compare_total(self):
- c = Context()
- d = c.compare_total(Decimal(1), Decimal(1))
- self.assertEqual(c.compare_total(1, 1), d)
- self.assertEqual(c.compare_total(Decimal(1), 1), d)
- self.assertEqual(c.compare_total(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.compare_total, '1', 1)
- self.assertRaises(TypeError, c.compare_total, 1, '1')
+ InvalidOperation = C.InvalidOperation
+ DivisionByZero = C.DivisionByZero
+ Overflow = C.Overflow
+ Subnormal = C.Subnormal
+ Underflow = C.Underflow
+ Rounded = C.Rounded
+ Inexact = C.Inexact
+ Clamped = C.Clamped
- def test_compare_total_mag(self):
- c = Context()
- d = c.compare_total_mag(Decimal(1), Decimal(1))
- self.assertEqual(c.compare_total_mag(1, 1), d)
- self.assertEqual(c.compare_total_mag(Decimal(1), 1), d)
- self.assertEqual(c.compare_total_mag(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.compare_total_mag, '1', 1)
- self.assertRaises(TypeError, c.compare_total_mag, 1, '1')
+ DecClamped = C.DecClamped
+ DecInvalidOperation = C.DecInvalidOperation
+ DecIEEEInvalidOperation = C.DecIEEEInvalidOperation
- def test_copy_abs(self):
- c = Context()
- d = c.copy_abs(Decimal(-1))
- self.assertEqual(c.copy_abs(-1), d)
- self.assertRaises(TypeError, c.copy_abs, '-1')
+ def assertIsExclusivelySet(signal, signal_dict):
+ for sig in signal_dict:
+ if sig == signal:
+ self.assertTrue(signal_dict[sig])
+ else:
+ self.assertFalse(signal_dict[sig])
- def test_copy_decimal(self):
- c = Context()
- d = c.copy_decimal(Decimal(-1))
- self.assertEqual(c.copy_decimal(-1), d)
- self.assertRaises(TypeError, c.copy_decimal, '-1')
+ c = DefaultContext.copy()
- def test_copy_negate(self):
- c = Context()
- d = c.copy_negate(Decimal(-1))
- self.assertEqual(c.copy_negate(-1), d)
- self.assertRaises(TypeError, c.copy_negate, '-1')
+ # Signal dict methods
+ self.assertTrue(Overflow in c.traps)
+ c.clear_traps()
+ for k in c.traps.keys():
+ c.traps[k] = True
+ for v in c.traps.values():
+ self.assertTrue(v)
+ c.clear_traps()
+ for k, v in c.traps.items():
+ self.assertFalse(v)
- def test_copy_sign(self):
- c = Context()
- d = c.copy_sign(Decimal(1), Decimal(-2))
- self.assertEqual(c.copy_sign(1, -2), d)
- self.assertEqual(c.copy_sign(Decimal(1), -2), d)
- self.assertEqual(c.copy_sign(1, Decimal(-2)), d)
- self.assertRaises(TypeError, c.copy_sign, '1', -2)
- self.assertRaises(TypeError, c.copy_sign, 1, '-2')
+ self.assertFalse(c.flags.get(Overflow))
+ self.assertIs(c.flags.get("x"), None)
+ self.assertEqual(c.flags.get("x", "y"), "y")
+ self.assertRaises(TypeError, c.flags.get, "x", "y", "z")
- def test_divide(self):
- c = Context()
- d = c.divide(Decimal(1), Decimal(2))
- self.assertEqual(c.divide(1, 2), d)
- self.assertEqual(c.divide(Decimal(1), 2), d)
- self.assertEqual(c.divide(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.divide, '1', 2)
- self.assertRaises(TypeError, c.divide, 1, '2')
+ self.assertEqual(len(c.flags), len(c.traps))
+ s = sys.getsizeof(c.flags)
+ s = sys.getsizeof(c.traps)
+ s = c.flags.__repr__()
- def test_divide_int(self):
- c = Context()
- d = c.divide_int(Decimal(1), Decimal(2))
- self.assertEqual(c.divide_int(1, 2), d)
- self.assertEqual(c.divide_int(Decimal(1), 2), d)
- self.assertEqual(c.divide_int(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.divide_int, '1', 2)
- self.assertRaises(TypeError, c.divide_int, 1, '2')
+ # Set flags/traps.
+ c.clear_flags()
+ c._flags = DecClamped
+ self.assertTrue(c.flags[Clamped])
- def test_divmod(self):
- c = Context()
- d = c.divmod(Decimal(1), Decimal(2))
- self.assertEqual(c.divmod(1, 2), d)
- self.assertEqual(c.divmod(Decimal(1), 2), d)
- self.assertEqual(c.divmod(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.divmod, '1', 2)
- self.assertRaises(TypeError, c.divmod, 1, '2')
+ c.clear_traps()
+ c._traps = DecInvalidOperation
+ self.assertTrue(c.traps[InvalidOperation])
- def test_exp(self):
- c = Context()
- d = c.exp(Decimal(10))
- self.assertEqual(c.exp(10), d)
- self.assertRaises(TypeError, c.exp, '10')
+ # Set flags/traps from dictionary.
+ c.clear_flags()
+ d = c.flags.copy()
+ d[DivisionByZero] = True
+ c.flags = d
+ assertIsExclusivelySet(DivisionByZero, c.flags)
- def test_fma(self):
- c = Context()
- d = c.fma(Decimal(2), Decimal(3), Decimal(4))
- self.assertEqual(c.fma(2, 3, 4), d)
- self.assertEqual(c.fma(Decimal(2), 3, 4), d)
- self.assertEqual(c.fma(2, Decimal(3), 4), d)
- self.assertEqual(c.fma(2, 3, Decimal(4)), d)
- self.assertEqual(c.fma(Decimal(2), Decimal(3), 4), d)
- self.assertRaises(TypeError, c.fma, '2', 3, 4)
- self.assertRaises(TypeError, c.fma, 2, '3', 4)
- self.assertRaises(TypeError, c.fma, 2, 3, '4')
+ c.clear_traps()
+ d = c.traps.copy()
+ d[Underflow] = True
+ c.traps = d
+ assertIsExclusivelySet(Underflow, c.traps)
- # Issue 12079 for Context.fma ...
- self.assertRaises(TypeError, c.fma,
- Decimal('Infinity'), Decimal(0), "not a decimal")
- self.assertRaises(TypeError, c.fma,
- Decimal(1), Decimal('snan'), 1.222)
- # ... and for Decimal.fma.
- self.assertRaises(TypeError, Decimal('Infinity').fma,
- Decimal(0), "not a decimal")
- self.assertRaises(TypeError, Decimal(1).fma,
- Decimal('snan'), 1.222)
+ # Random constructors
+ IntSignals = {
+ Clamped: C.DecClamped,
+ Rounded: C.DecRounded,
+ Inexact: C.DecInexact,
+ Subnormal: C.DecSubnormal,
+ Underflow: C.DecUnderflow,
+ Overflow: C.DecOverflow,
+ DivisionByZero: C.DecDivisionByZero,
+ InvalidOperation: C.DecIEEEInvalidOperation
+ }
+ IntCond = [
+ C.DecDivisionImpossible, C.DecDivisionUndefined, C.DecFpuError,
+ C.DecInvalidContext, C.DecInvalidOperation, C.DecMallocError,
+ C.DecConversionSyntax,
+ ]
- def test_is_finite(self):
- c = Context()
- d = c.is_finite(Decimal(10))
- self.assertEqual(c.is_finite(10), d)
- self.assertRaises(TypeError, c.is_finite, '10')
+ lim = len(OrderedSignals[C])
+ for r in range(lim):
+ for t in range(lim):
+ for round in RoundingModes[C]:
+ flags = random.sample(OrderedSignals[C], r)
+ traps = random.sample(OrderedSignals[C], t)
+ prec = random.randrange(1, 10000)
+ emin = random.randrange(-10000, 0)
+ emax = random.randrange(0, 10000)
+ clamp = random.randrange(0, 2)
+ caps = random.randrange(0, 2)
+ cr = random.randrange(0, 2)
+ c = Context(prec=prec, rounding=round, Emin=emin, Emax=emax,
+ capitals=caps, clamp=clamp, flags=list(flags),
+ traps=list(traps))
- def test_is_infinite(self):
- c = Context()
- d = c.is_infinite(Decimal(10))
- self.assertEqual(c.is_infinite(10), d)
- self.assertRaises(TypeError, c.is_infinite, '10')
+ self.assertEqual(c.prec, prec)
+ self.assertEqual(c.rounding, round)
+ self.assertEqual(c.Emin, emin)
+ self.assertEqual(c.Emax, emax)
+ self.assertEqual(c.capitals, caps)
+ self.assertEqual(c.clamp, clamp)
- def test_is_nan(self):
- c = Context()
- d = c.is_nan(Decimal(10))
- self.assertEqual(c.is_nan(10), d)
- self.assertRaises(TypeError, c.is_nan, '10')
+ f = 0
+ for x in flags:
+ f |= IntSignals[x]
+ self.assertEqual(c._flags, f)
- def test_is_normal(self):
- c = Context()
- d = c.is_normal(Decimal(10))
- self.assertEqual(c.is_normal(10), d)
- self.assertRaises(TypeError, c.is_normal, '10')
+ f = 0
+ for x in traps:
+ f |= IntSignals[x]
+ self.assertEqual(c._traps, f)
- def test_is_qnan(self):
- c = Context()
- d = c.is_qnan(Decimal(10))
- self.assertEqual(c.is_qnan(10), d)
- self.assertRaises(TypeError, c.is_qnan, '10')
+ for cond in IntCond:
+ c._flags = cond
+ self.assertTrue(c._flags&DecIEEEInvalidOperation)
+ assertIsExclusivelySet(InvalidOperation, c.flags)
- def test_is_signed(self):
- c = Context()
- d = c.is_signed(Decimal(10))
- self.assertEqual(c.is_signed(10), d)
- self.assertRaises(TypeError, c.is_signed, '10')
+ for cond in IntCond:
+ c._traps = cond
+ self.assertTrue(c._traps&DecIEEEInvalidOperation)
+ assertIsExclusivelySet(InvalidOperation, c.traps)
- def test_is_snan(self):
- c = Context()
- d = c.is_snan(Decimal(10))
- self.assertEqual(c.is_snan(10), d)
- self.assertRaises(TypeError, c.is_snan, '10')
+ def test_invalid_override(self):
+ Decimal = C.Decimal
- def test_is_subnormal(self):
- c = Context()
- d = c.is_subnormal(Decimal(10))
- self.assertEqual(c.is_subnormal(10), d)
- self.assertRaises(TypeError, c.is_subnormal, '10')
+ try:
+ from locale import CHAR_MAX
+ except ImportError:
+ return
- def test_is_zero(self):
- c = Context()
- d = c.is_zero(Decimal(10))
- self.assertEqual(c.is_zero(10), d)
- self.assertRaises(TypeError, c.is_zero, '10')
+ def make_grouping(lst):
+ return ''.join([chr(x) for x in lst])
- def test_ln(self):
- c = Context()
- d = c.ln(Decimal(10))
- self.assertEqual(c.ln(10), d)
- self.assertRaises(TypeError, c.ln, '10')
-
- def test_log10(self):
- c = Context()
- d = c.log10(Decimal(10))
- self.assertEqual(c.log10(10), d)
- self.assertRaises(TypeError, c.log10, '10')
-
- def test_logb(self):
- c = Context()
- d = c.logb(Decimal(10))
- self.assertEqual(c.logb(10), d)
- self.assertRaises(TypeError, c.logb, '10')
-
- def test_logical_and(self):
- c = Context()
- d = c.logical_and(Decimal(1), Decimal(1))
- self.assertEqual(c.logical_and(1, 1), d)
- self.assertEqual(c.logical_and(Decimal(1), 1), d)
- self.assertEqual(c.logical_and(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.logical_and, '1', 1)
- self.assertRaises(TypeError, c.logical_and, 1, '1')
-
- def test_logical_invert(self):
- c = Context()
- d = c.logical_invert(Decimal(1000))
- self.assertEqual(c.logical_invert(1000), d)
- self.assertRaises(TypeError, c.logical_invert, '1000')
-
- def test_logical_or(self):
- c = Context()
- d = c.logical_or(Decimal(1), Decimal(1))
- self.assertEqual(c.logical_or(1, 1), d)
- self.assertEqual(c.logical_or(Decimal(1), 1), d)
- self.assertEqual(c.logical_or(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.logical_or, '1', 1)
- self.assertRaises(TypeError, c.logical_or, 1, '1')
-
- def test_logical_xor(self):
- c = Context()
- d = c.logical_xor(Decimal(1), Decimal(1))
- self.assertEqual(c.logical_xor(1, 1), d)
- self.assertEqual(c.logical_xor(Decimal(1), 1), d)
- self.assertEqual(c.logical_xor(1, Decimal(1)), d)
- self.assertRaises(TypeError, c.logical_xor, '1', 1)
- self.assertRaises(TypeError, c.logical_xor, 1, '1')
-
- def test_max(self):
- c = Context()
- d = c.max(Decimal(1), Decimal(2))
- self.assertEqual(c.max(1, 2), d)
- self.assertEqual(c.max(Decimal(1), 2), d)
- self.assertEqual(c.max(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.max, '1', 2)
- self.assertRaises(TypeError, c.max, 1, '2')
-
- def test_max_mag(self):
- c = Context()
- d = c.max_mag(Decimal(1), Decimal(2))
- self.assertEqual(c.max_mag(1, 2), d)
- self.assertEqual(c.max_mag(Decimal(1), 2), d)
- self.assertEqual(c.max_mag(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.max_mag, '1', 2)
- self.assertRaises(TypeError, c.max_mag, 1, '2')
-
- def test_min(self):
- c = Context()
- d = c.min(Decimal(1), Decimal(2))
- self.assertEqual(c.min(1, 2), d)
- self.assertEqual(c.min(Decimal(1), 2), d)
- self.assertEqual(c.min(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.min, '1', 2)
- self.assertRaises(TypeError, c.min, 1, '2')
-
- def test_min_mag(self):
- c = Context()
- d = c.min_mag(Decimal(1), Decimal(2))
- self.assertEqual(c.min_mag(1, 2), d)
- self.assertEqual(c.min_mag(Decimal(1), 2), d)
- self.assertEqual(c.min_mag(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.min_mag, '1', 2)
- self.assertRaises(TypeError, c.min_mag, 1, '2')
-
- def test_minus(self):
- c = Context()
- d = c.minus(Decimal(10))
- self.assertEqual(c.minus(10), d)
- self.assertRaises(TypeError, c.minus, '10')
-
- def test_multiply(self):
- c = Context()
- d = c.multiply(Decimal(1), Decimal(2))
- self.assertEqual(c.multiply(1, 2), d)
- self.assertEqual(c.multiply(Decimal(1), 2), d)
- self.assertEqual(c.multiply(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.multiply, '1', 2)
- self.assertRaises(TypeError, c.multiply, 1, '2')
-
- def test_next_minus(self):
- c = Context()
- d = c.next_minus(Decimal(10))
- self.assertEqual(c.next_minus(10), d)
- self.assertRaises(TypeError, c.next_minus, '10')
-
- def test_next_plus(self):
- c = Context()
- d = c.next_plus(Decimal(10))
- self.assertEqual(c.next_plus(10), d)
- self.assertRaises(TypeError, c.next_plus, '10')
-
- def test_next_toward(self):
- c = Context()
- d = c.next_toward(Decimal(1), Decimal(2))
- self.assertEqual(c.next_toward(1, 2), d)
- self.assertEqual(c.next_toward(Decimal(1), 2), d)
- self.assertEqual(c.next_toward(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.next_toward, '1', 2)
- self.assertRaises(TypeError, c.next_toward, 1, '2')
-
- def test_normalize(self):
- c = Context()
- d = c.normalize(Decimal(10))
- self.assertEqual(c.normalize(10), d)
- self.assertRaises(TypeError, c.normalize, '10')
-
- def test_number_class(self):
- c = Context()
- self.assertEqual(c.number_class(123), c.number_class(Decimal(123)))
- self.assertEqual(c.number_class(0), c.number_class(Decimal(0)))
- self.assertEqual(c.number_class(-45), c.number_class(Decimal(-45)))
-
- def test_power(self):
- c = Context()
- d = c.power(Decimal(1), Decimal(4), Decimal(2))
- self.assertEqual(c.power(1, 4, 2), d)
- self.assertEqual(c.power(Decimal(1), 4, 2), d)
- self.assertEqual(c.power(1, Decimal(4), 2), d)
- self.assertEqual(c.power(1, 4, Decimal(2)), d)
- self.assertEqual(c.power(Decimal(1), Decimal(4), 2), d)
- self.assertRaises(TypeError, c.power, '1', 4, 2)
- self.assertRaises(TypeError, c.power, 1, '4', 2)
- self.assertRaises(TypeError, c.power, 1, 4, '2')
-
- def test_plus(self):
- c = Context()
- d = c.plus(Decimal(10))
- self.assertEqual(c.plus(10), d)
- self.assertRaises(TypeError, c.plus, '10')
-
- def test_quantize(self):
- c = Context()
- d = c.quantize(Decimal(1), Decimal(2))
- self.assertEqual(c.quantize(1, 2), d)
- self.assertEqual(c.quantize(Decimal(1), 2), d)
- self.assertEqual(c.quantize(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.quantize, '1', 2)
- self.assertRaises(TypeError, c.quantize, 1, '2')
-
- def test_remainder(self):
- c = Context()
- d = c.remainder(Decimal(1), Decimal(2))
- self.assertEqual(c.remainder(1, 2), d)
- self.assertEqual(c.remainder(Decimal(1), 2), d)
- self.assertEqual(c.remainder(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.remainder, '1', 2)
- self.assertRaises(TypeError, c.remainder, 1, '2')
-
- def test_remainder_near(self):
- c = Context()
- d = c.remainder_near(Decimal(1), Decimal(2))
- self.assertEqual(c.remainder_near(1, 2), d)
- self.assertEqual(c.remainder_near(Decimal(1), 2), d)
- self.assertEqual(c.remainder_near(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.remainder_near, '1', 2)
- self.assertRaises(TypeError, c.remainder_near, 1, '2')
-
- def test_rotate(self):
- c = Context()
- d = c.rotate(Decimal(1), Decimal(2))
- self.assertEqual(c.rotate(1, 2), d)
- self.assertEqual(c.rotate(Decimal(1), 2), d)
- self.assertEqual(c.rotate(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.rotate, '1', 2)
- self.assertRaises(TypeError, c.rotate, 1, '2')
-
- def test_sqrt(self):
- c = Context()
- d = c.sqrt(Decimal(10))
- self.assertEqual(c.sqrt(10), d)
- self.assertRaises(TypeError, c.sqrt, '10')
-
- def test_same_quantum(self):
- c = Context()
- d = c.same_quantum(Decimal(1), Decimal(2))
- self.assertEqual(c.same_quantum(1, 2), d)
- self.assertEqual(c.same_quantum(Decimal(1), 2), d)
- self.assertEqual(c.same_quantum(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.same_quantum, '1', 2)
- self.assertRaises(TypeError, c.same_quantum, 1, '2')
-
- def test_scaleb(self):
- c = Context()
- d = c.scaleb(Decimal(1), Decimal(2))
- self.assertEqual(c.scaleb(1, 2), d)
- self.assertEqual(c.scaleb(Decimal(1), 2), d)
- self.assertEqual(c.scaleb(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.scaleb, '1', 2)
- self.assertRaises(TypeError, c.scaleb, 1, '2')
-
- def test_shift(self):
- c = Context()
- d = c.shift(Decimal(1), Decimal(2))
- self.assertEqual(c.shift(1, 2), d)
- self.assertEqual(c.shift(Decimal(1), 2), d)
- self.assertEqual(c.shift(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.shift, '1', 2)
- self.assertRaises(TypeError, c.shift, 1, '2')
-
- def test_subtract(self):
- c = Context()
- d = c.subtract(Decimal(1), Decimal(2))
- self.assertEqual(c.subtract(1, 2), d)
- self.assertEqual(c.subtract(Decimal(1), 2), d)
- self.assertEqual(c.subtract(1, Decimal(2)), d)
- self.assertRaises(TypeError, c.subtract, '1', 2)
- self.assertRaises(TypeError, c.subtract, 1, '2')
-
- def test_to_eng_string(self):
- c = Context()
- d = c.to_eng_string(Decimal(10))
- self.assertEqual(c.to_eng_string(10), d)
- self.assertRaises(TypeError, c.to_eng_string, '10')
-
- def test_to_sci_string(self):
- c = Context()
- d = c.to_sci_string(Decimal(10))
- self.assertEqual(c.to_sci_string(10), d)
- self.assertRaises(TypeError, c.to_sci_string, '10')
-
- def test_to_integral_exact(self):
- c = Context()
- d = c.to_integral_exact(Decimal(10))
- self.assertEqual(c.to_integral_exact(10), d)
- self.assertRaises(TypeError, c.to_integral_exact, '10')
-
- def test_to_integral_value(self):
- c = Context()
- d = c.to_integral_value(Decimal(10))
- self.assertEqual(c.to_integral_value(10), d)
- self.assertRaises(TypeError, c.to_integral_value, '10')
-
-class WithStatementTest(unittest.TestCase):
- # Can't do these as docstrings until Python 2.6
- # as doctest can't handle __future__ statements
-
- def test_localcontext(self):
- # Use a copy of the current context in the block
- orig_ctx = getcontext()
- with localcontext() as enter_ctx:
- set_ctx = getcontext()
- final_ctx = getcontext()
- self.assertIs(orig_ctx, final_ctx, 'did not restore context correctly')
- self.assertIsNot(orig_ctx, set_ctx, 'did not copy the context')
- self.assertIs(set_ctx, enter_ctx, '__enter__ returned wrong context')
-
- def test_localcontextarg(self):
- # Use a copy of the supplied context in the block
- orig_ctx = getcontext()
- new_ctx = Context(prec=42)
- with localcontext(new_ctx) as enter_ctx:
- set_ctx = getcontext()
- final_ctx = getcontext()
- self.assertIs(orig_ctx, final_ctx, 'did not restore context correctly')
- self.assertEqual(set_ctx.prec, new_ctx.prec, 'did not set correct context')
- self.assertIsNot(new_ctx, set_ctx, 'did not copy the context')
- self.assertIs(set_ctx, enter_ctx, '__enter__ returned wrong context')
-
-class ContextFlags(unittest.TestCase):
- def test_flags_irrelevant(self):
- # check that the result (numeric result + flags raised) of an
- # arithmetic operation doesn't depend on the current flags
-
- context = Context(prec=9, Emin = -999999999, Emax = 999999999,
- rounding=ROUND_HALF_EVEN, traps=[], flags=[])
+ def get_fmt(x, override=None, fmt='n'):
+ return Decimal(x).__format__(fmt, override)
- # operations that raise various flags, in the form (function, arglist)
- operations = [
- (context._apply, [Decimal("100E-1000000009")]),
- (context.sqrt, [Decimal(2)]),
- (context.add, [Decimal("1.23456789"), Decimal("9.87654321")]),
- (context.multiply, [Decimal("1.23456789"), Decimal("9.87654321")]),
- (context.subtract, [Decimal("1.23456789"), Decimal("9.87654321")]),
- ]
+ invalid_grouping = {
+ 'decimal_point' : ',',
+ 'grouping' : make_grouping([255, 255, 0]),
+ 'thousands_sep' : ','
+ }
+ invalid_dot = {
+ 'decimal_point' : 'xxxxx',
+ 'grouping' : make_grouping([3, 3, 0]),
+ 'thousands_sep' : ','
+ }
+ invalid_sep = {
+ 'decimal_point' : '.',
+ 'grouping' : make_grouping([3, 3, 0]),
+ 'thousands_sep' : 'yyyyy'
+ }
- # try various flags individually, then a whole lot at once
- flagsets = [[Inexact], [Rounded], [Underflow], [Clamped], [Subnormal],
- [Inexact, Rounded, Underflow, Clamped, Subnormal]]
+ if CHAR_MAX == 127: # negative grouping in override
+ self.assertRaises(ValueError, get_fmt, 12345,
+ invalid_grouping, 'g')
- for fn, args in operations:
- # find answer and flags raised using a clean context
- context.clear_flags()
- ans = fn(*args)
- flags = [k for k, v in context.flags.items() if v]
+ self.assertRaises(ValueError, get_fmt, 12345, invalid_dot, 'g')
+ self.assertRaises(ValueError, get_fmt, 12345, invalid_sep, 'g')
- for extra_flags in flagsets:
- # set flags, before calling operation
- context.clear_flags()
- for flag in extra_flags:
- context._raise_error(flag)
- new_ans = fn(*args)
- # flags that we expect to be set after the operation
- expected_flags = list(flags)
- for flag in extra_flags:
- if flag not in expected_flags:
- expected_flags.append(flag)
- expected_flags.sort(key=id)
+all_tests = [
+ CExplicitConstructionTest, PyExplicitConstructionTest,
+ CImplicitConstructionTest, PyImplicitConstructionTest,
+ CFormatTest, PyFormatTest,
+ CArithmeticOperatorsTest, PyArithmeticOperatorsTest,
+ CThreadingTest, PyThreadingTest,
+ CUsabilityTest, PyUsabilityTest,
+ CPythonAPItests, PyPythonAPItests,
+ CContextAPItests, PyContextAPItests,
+ CContextWithStatement, PyContextWithStatement,
+ CContextFlags, PyContextFlags,
+ CSpecialContexts, PySpecialContexts,
+ CContextInputValidation, PyContextInputValidation,
+ CContextSubclassing, PyContextSubclassing,
+ CCoverage, PyCoverage,
+ CFunctionality, PyFunctionality,
+ CWhitebox, PyWhitebox,
+ CIBMTestCases, PyIBMTestCases,
+]
- # flags we actually got
- new_flags = [k for k,v in context.flags.items() if v]
- new_flags.sort(key=id)
+# Delete C tests if _decimal.so is not present.
+if not C:
+ all_tests = all_tests[1::2]
+else:
+ all_tests.insert(0, CheckAttributes)
- self.assertEqual(ans, new_ans,
- "operation produces different answers depending on flags set: " +
- "expected %s, got %s." % (ans, new_ans))
- self.assertEqual(new_flags, expected_flags,
- "operation raises different flags depending on flags set: " +
- "expected %s, got %s" % (expected_flags, new_flags))
def test_main(arith=False, verbose=None, todo_tests=None, debug=None):
""" Execute the tests.
@@ -2366,27 +4948,16 @@
is enabled in regrtest.py
"""
- init()
+ init(C)
+ init(P)
global TEST_ALL, DEBUG
TEST_ALL = arith or is_resource_enabled('decimal')
DEBUG = debug
if todo_tests is None:
- test_classes = [
- DecimalExplicitConstructionTest,
- DecimalImplicitConstructionTest,
- DecimalArithmeticOperatorsTest,
- DecimalFormatTest,
- DecimalUseOfContextTest,
- DecimalUsabilityTest,
- DecimalPythonAPItests,
- ContextAPItests,
- DecimalTest,
- WithStatementTest,
- ContextFlags
- ]
+ test_classes = all_tests
else:
- test_classes = [DecimalTest]
+ test_classes = [CIBMTestCases, PyIBMTestCases]
# Dynamically build custom test definition for each file in the test
# directory and add the definitions to the DecimalTest class. This
@@ -2398,17 +4969,32 @@
if todo_tests is not None and head not in todo_tests:
continue
tester = lambda self, f=filename: self.eval_file(directory + f)
- setattr(DecimalTest, 'test_' + head, tester)
+ setattr(CIBMTestCases, 'test_' + head, tester)
+ setattr(PyIBMTestCases, 'test_' + head, tester)
del filename, head, tail, tester
try:
run_unittest(*test_classes)
if todo_tests is None:
- import decimal as DecimalModule
- run_doctest(DecimalModule, verbose)
+ from doctest import IGNORE_EXCEPTION_DETAIL
+ savedecimal = sys.modules['decimal']
+ if C:
+ sys.modules['decimal'] = C
+ run_doctest(C, verbose, optionflags=IGNORE_EXCEPTION_DETAIL)
+ sys.modules['decimal'] = P
+ run_doctest(P, verbose)
+ sys.modules['decimal'] = savedecimal
finally:
- setcontext(ORIGINAL_CONTEXT)
+ if C: C.setcontext(ORIGINAL_CONTEXT[C])
+ P.setcontext(ORIGINAL_CONTEXT[P])
+ if not C:
+ warnings.warn('C tests skipped: no module named _decimal.',
+ UserWarning)
+ if not orig_sys_decimal is sys.modules['decimal']:
+ raise TestFailed("Internal error: unbalanced number of changes to "
+ "sys.modules['decimal'].")
+
if __name__ == '__main__':
import optparse
diff --git a/Lib/test/test_fractions.py b/Lib/test/test_fractions.py
index 084ae0c..1fad921 100644
--- a/Lib/test/test_fractions.py
+++ b/Lib/test/test_fractions.py
@@ -401,14 +401,10 @@
def testMixingWithDecimal(self):
# Decimal refuses mixed arithmetic (but not mixed comparisons)
- self.assertRaisesMessage(
- TypeError,
- "unsupported operand type(s) for +: 'Fraction' and 'Decimal'",
- operator.add, F(3,11), Decimal('3.1415926'))
- self.assertRaisesMessage(
- TypeError,
- "unsupported operand type(s) for +: 'Decimal' and 'Fraction'",
- operator.add, Decimal('3.1415926'), F(3,11))
+ self.assertRaises(TypeError, operator.add,
+ F(3,11), Decimal('3.1415926'))
+ self.assertRaises(TypeError, operator.add,
+ Decimal('3.1415926'), F(3,11))
def testComparisons(self):
self.assertTrue(F(1, 2) < F(2, 3))
diff --git a/Lib/test/test_numeric_tower.py b/Lib/test/test_numeric_tower.py
index bef3d4c..3423d4e 100644
--- a/Lib/test/test_numeric_tower.py
+++ b/Lib/test/test_numeric_tower.py
@@ -150,7 +150,7 @@
# int, float, Fraction, Decimal
test_values = [
float('-inf'),
- D('-1e999999999'),
+ D('-1e425000000'),
-1e308,
F(-22, 7),
-3.14,