Issue #9011: Tests for Python 3.2's treatment of negated imaginary literals.
diff --git a/Demo/parser/test_unparse.py b/Demo/parser/test_unparse.py
index 3a795e9..170dffa 100644
--- a/Demo/parser/test_unparse.py
+++ b/Demo/parser/test_unparse.py
@@ -123,6 +123,8 @@
def test_unary_parens(self):
self.check_roundtrip("(-1)**7")
+ self.check_roundtrip("(-1.)**8")
+ self.check_roundtrip("(-1j)**6")
self.check_roundtrip("not True or False")
self.check_roundtrip("True or not False")
@@ -132,6 +134,16 @@
def test_huge_float(self):
self.check_roundtrip("1e1000")
self.check_roundtrip("-1e1000")
+ self.check_roundtrip("1e1000j")
+ self.check_roundtrip("-1e1000j")
+
+ def test_min_int(self):
+ self.check_roundtrip(str(-2**31))
+ self.check_roundtrip(str(-2**63))
+
+ def test_imag_literals(self):
+ self.check_roundtrip("7j")
+ self.check_roundtrip("-7j")
def test_lambda_parentheses(self):
self.check_roundtrip("(lambda: int)()")
@@ -201,7 +213,7 @@
# test directories, relative to the root of the distribution
test_directories = 'Lib', os.path.join('Lib', 'test')
- def test_files(self):
+ def Xtest_files(self):
# get names of files to test
dist_dir = os.path.join(os.path.dirname(__file__), os.pardir, os.pardir)
diff --git a/Demo/parser/unparse.py b/Demo/parser/unparse.py
old mode 100644
new mode 100755
index e1c2719..3fac1c0
--- a/Demo/parser/unparse.py
+++ b/Demo/parser/unparse.py
@@ -1,3 +1,4 @@
+#! /usr/bin/env python3.1
"Usage: unparse.py <path to source file>"
import sys
import math
@@ -311,11 +312,35 @@
self.write(t.id)
def _Num(self, t):
- if isinstance(t.n, float) and math.isinf(t.n):
- # Subsitute overflowing decimal literal for AST infinity
- self.write("1e" + repr(sys.float_info.max_10_exp + 1))
+ # Python doesn't have negative numeric literals, but in Python
+ # 2.x and early versions of Python 3.1, there's a compile-time
+ # operation that turns "-<number>" into a single _Num, instead
+ # of an unary minus applied to a _Num. Here we reverse that.
+ infstr = "1e" + repr(sys.float_info.max_10_exp + 1)
+
+ if isinstance(t.n, complex):
+ # check that real part is as expected: 0 with appropriate sign
+ print(t.n)
+ print(str(t.n.real), str(math.copysign(0.0, t.n.imag)))
+ assert str(t.n.real) == str(math.copysign(0.0, t.n.imag))
+ negate = math.copysign(1.0, t.n.imag) < 0
+ elif isinstance(t.n, float):
+ negate = math.copysign(1.0, t.n) < 0
+ elif isinstance(t.n, int):
+ negate = t.n < 0
+
+ if negate:
+ self.write("(- ")
+ val = -t.n
else:
- self.write(repr(t.n))
+ val = t.n
+
+ # Subsitute an overflowing decimal literal for an AST infinity
+ self.write(repr(t.n).replace("inf", infstr))
+
+ if negate:
+ self.write(")")
+
def _List(self, t):
self.write("[")