| # Python test set -- part 6, built-in types |
| |
| from test.support import run_with_locale |
| import collections.abc |
| import inspect |
| import pickle |
| import locale |
| import sys |
| import types |
| import unittest.mock |
| import weakref |
| |
| class TypesTests(unittest.TestCase): |
| |
| def test_truth_values(self): |
| if None: self.fail('None is true instead of false') |
| if 0: self.fail('0 is true instead of false') |
| if 0.0: self.fail('0.0 is true instead of false') |
| if '': self.fail('\'\' is true instead of false') |
| if not 1: self.fail('1 is false instead of true') |
| if not 1.0: self.fail('1.0 is false instead of true') |
| if not 'x': self.fail('\'x\' is false instead of true') |
| if not {'x': 1}: self.fail('{\'x\': 1} is false instead of true') |
| def f(): pass |
| class C: pass |
| x = C() |
| if not f: self.fail('f is false instead of true') |
| if not C: self.fail('C is false instead of true') |
| if not sys: self.fail('sys is false instead of true') |
| if not x: self.fail('x is false instead of true') |
| |
| def test_boolean_ops(self): |
| if 0 or 0: self.fail('0 or 0 is true instead of false') |
| if 1 and 1: pass |
| else: self.fail('1 and 1 is false instead of true') |
| if not 1: self.fail('not 1 is true instead of false') |
| |
| def test_comparisons(self): |
| if 0 < 1 <= 1 == 1 >= 1 > 0 != 1: pass |
| else: self.fail('int comparisons failed') |
| if 0.0 < 1.0 <= 1.0 == 1.0 >= 1.0 > 0.0 != 1.0: pass |
| else: self.fail('float comparisons failed') |
| if '' < 'a' <= 'a' == 'a' < 'abc' < 'abd' < 'b': pass |
| else: self.fail('string comparisons failed') |
| if None is None: pass |
| else: self.fail('identity test failed') |
| |
| def test_float_constructor(self): |
| self.assertRaises(ValueError, float, '') |
| self.assertRaises(ValueError, float, '5\0') |
| self.assertRaises(ValueError, float, '5_5\0') |
| |
| def test_zero_division(self): |
| try: 5.0 / 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 / 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5.0 // 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 // 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5.0 % 0.0 |
| except ZeroDivisionError: pass |
| else: self.fail("5.0 % 0.0 didn't raise ZeroDivisionError") |
| |
| try: 5 / 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 / 0 didn't raise ZeroDivisionError") |
| |
| try: 5 // 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 // 0 didn't raise ZeroDivisionError") |
| |
| try: 5 % 0 |
| except ZeroDivisionError: pass |
| else: self.fail("5 % 0 didn't raise ZeroDivisionError") |
| |
| def test_numeric_types(self): |
| if 0 != 0.0 or 1 != 1.0 or -1 != -1.0: |
| self.fail('int/float value not equal') |
| # calling built-in types without argument must return 0 |
| if int() != 0: self.fail('int() does not return 0') |
| if float() != 0.0: self.fail('float() does not return 0.0') |
| if int(1.9) == 1 == int(1.1) and int(-1.1) == -1 == int(-1.9): pass |
| else: self.fail('int() does not round properly') |
| if float(1) == 1.0 and float(-1) == -1.0 and float(0) == 0.0: pass |
| else: self.fail('float() does not work properly') |
| |
| def test_float_to_string(self): |
| def test(f, result): |
| self.assertEqual(f.__format__('e'), result) |
| self.assertEqual('%e' % f, result) |
| |
| # test all 2 digit exponents, both with __format__ and with |
| # '%' formatting |
| for i in range(-99, 100): |
| test(float('1.5e'+str(i)), '1.500000e{0:+03d}'.format(i)) |
| |
| # test some 3 digit exponents |
| self.assertEqual(1.5e100.__format__('e'), '1.500000e+100') |
| self.assertEqual('%e' % 1.5e100, '1.500000e+100') |
| |
| self.assertEqual(1.5e101.__format__('e'), '1.500000e+101') |
| self.assertEqual('%e' % 1.5e101, '1.500000e+101') |
| |
| self.assertEqual(1.5e-100.__format__('e'), '1.500000e-100') |
| self.assertEqual('%e' % 1.5e-100, '1.500000e-100') |
| |
| self.assertEqual(1.5e-101.__format__('e'), '1.500000e-101') |
| self.assertEqual('%e' % 1.5e-101, '1.500000e-101') |
| |
| self.assertEqual('%g' % 1.0, '1') |
| self.assertEqual('%#g' % 1.0, '1.00000') |
| |
| def test_normal_integers(self): |
| # Ensure the first 256 integers are shared |
| a = 256 |
| b = 128*2 |
| if a is not b: self.fail('256 is not shared') |
| if 12 + 24 != 36: self.fail('int op') |
| if 12 + (-24) != -12: self.fail('int op') |
| if (-12) + 24 != 12: self.fail('int op') |
| if (-12) + (-24) != -36: self.fail('int op') |
| if not 12 < 24: self.fail('int op') |
| if not -24 < -12: self.fail('int op') |
| # Test for a particular bug in integer multiply |
| xsize, ysize, zsize = 238, 356, 4 |
| if not (xsize*ysize*zsize == zsize*xsize*ysize == 338912): |
| self.fail('int mul commutativity') |
| # And another. |
| m = -sys.maxsize - 1 |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor |
| prod = divisor * j |
| if prod != m: |
| self.fail("%r * %r == %r != %r" % (divisor, j, prod, m)) |
| if type(prod) is not int: |
| self.fail("expected type(prod) to be int, not %r" % |
| type(prod)) |
| # Check for unified integral type |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor - 1 |
| prod = divisor * j |
| if type(prod) is not int: |
| self.fail("expected type(%r) to be int, not %r" % |
| (prod, type(prod))) |
| # Check for unified integral type |
| m = sys.maxsize |
| for divisor in 1, 2, 4, 8, 16, 32: |
| j = m // divisor + 1 |
| prod = divisor * j |
| if type(prod) is not int: |
| self.fail("expected type(%r) to be int, not %r" % |
| (prod, type(prod))) |
| |
| x = sys.maxsize |
| self.assertIsInstance(x + 1, int, |
| "(sys.maxsize + 1) should have returned int") |
| self.assertIsInstance(-x - 1, int, |
| "(-sys.maxsize - 1) should have returned int") |
| self.assertIsInstance(-x - 2, int, |
| "(-sys.maxsize - 2) should have returned int") |
| |
| try: 5 << -5 |
| except ValueError: pass |
| else: self.fail('int negative shift <<') |
| |
| try: 5 >> -5 |
| except ValueError: pass |
| else: self.fail('int negative shift >>') |
| |
| def test_floats(self): |
| if 12.0 + 24.0 != 36.0: self.fail('float op') |
| if 12.0 + (-24.0) != -12.0: self.fail('float op') |
| if (-12.0) + 24.0 != 12.0: self.fail('float op') |
| if (-12.0) + (-24.0) != -36.0: self.fail('float op') |
| if not 12.0 < 24.0: self.fail('float op') |
| if not -24.0 < -12.0: self.fail('float op') |
| |
| def test_strings(self): |
| if len('') != 0: self.fail('len(\'\')') |
| if len('a') != 1: self.fail('len(\'a\')') |
| if len('abcdef') != 6: self.fail('len(\'abcdef\')') |
| if 'xyz' + 'abcde' != 'xyzabcde': self.fail('string concatenation') |
| if 'xyz'*3 != 'xyzxyzxyz': self.fail('string repetition *3') |
| if 0*'abcde' != '': self.fail('string repetition 0*') |
| if min('abc') != 'a' or max('abc') != 'c': self.fail('min/max string') |
| if 'a' in 'abc' and 'b' in 'abc' and 'c' in 'abc' and 'd' not in 'abc': pass |
| else: self.fail('in/not in string') |
| x = 'x'*103 |
| if '%s!'%x != x+'!': self.fail('nasty string formatting bug') |
| |
| #extended slices for strings |
| a = '0123456789' |
| self.assertEqual(a[::], a) |
| self.assertEqual(a[::2], '02468') |
| self.assertEqual(a[1::2], '13579') |
| self.assertEqual(a[::-1],'9876543210') |
| self.assertEqual(a[::-2], '97531') |
| self.assertEqual(a[3::-2], '31') |
| self.assertEqual(a[-100:100:], a) |
| self.assertEqual(a[100:-100:-1], a[::-1]) |
| self.assertEqual(a[-100:100:2], '02468') |
| |
| def test_type_function(self): |
| self.assertRaises(TypeError, type, 1, 2) |
| self.assertRaises(TypeError, type, 1, 2, 3, 4) |
| |
| def test_int__format__(self): |
| def test(i, format_spec, result): |
| # just make sure we have the unified type for integers |
| assert type(i) == int |
| assert type(format_spec) == str |
| self.assertEqual(i.__format__(format_spec), result) |
| |
| test(123456789, 'd', '123456789') |
| test(123456789, 'd', '123456789') |
| |
| test(1, 'c', '\01') |
| |
| # sign and aligning are interdependent |
| test(1, "-", '1') |
| test(-1, "-", '-1') |
| test(1, "-3", ' 1') |
| test(-1, "-3", ' -1') |
| test(1, "+3", ' +1') |
| test(-1, "+3", ' -1') |
| test(1, " 3", ' 1') |
| test(-1, " 3", ' -1') |
| test(1, " ", ' 1') |
| test(-1, " ", '-1') |
| |
| # hex |
| test(3, "x", "3") |
| test(3, "X", "3") |
| test(1234, "x", "4d2") |
| test(-1234, "x", "-4d2") |
| test(1234, "8x", " 4d2") |
| test(-1234, "8x", " -4d2") |
| test(1234, "x", "4d2") |
| test(-1234, "x", "-4d2") |
| test(-3, "x", "-3") |
| test(-3, "X", "-3") |
| test(int('be', 16), "x", "be") |
| test(int('be', 16), "X", "BE") |
| test(-int('be', 16), "x", "-be") |
| test(-int('be', 16), "X", "-BE") |
| |
| # octal |
| test(3, "o", "3") |
| test(-3, "o", "-3") |
| test(65, "o", "101") |
| test(-65, "o", "-101") |
| test(1234, "o", "2322") |
| test(-1234, "o", "-2322") |
| test(1234, "-o", "2322") |
| test(-1234, "-o", "-2322") |
| test(1234, " o", " 2322") |
| test(-1234, " o", "-2322") |
| test(1234, "+o", "+2322") |
| test(-1234, "+o", "-2322") |
| |
| # binary |
| test(3, "b", "11") |
| test(-3, "b", "-11") |
| test(1234, "b", "10011010010") |
| test(-1234, "b", "-10011010010") |
| test(1234, "-b", "10011010010") |
| test(-1234, "-b", "-10011010010") |
| test(1234, " b", " 10011010010") |
| test(-1234, " b", "-10011010010") |
| test(1234, "+b", "+10011010010") |
| test(-1234, "+b", "-10011010010") |
| |
| # alternate (#) formatting |
| test(0, "#b", '0b0') |
| test(0, "-#b", '0b0') |
| test(1, "-#b", '0b1') |
| test(-1, "-#b", '-0b1') |
| test(-1, "-#5b", ' -0b1') |
| test(1, "+#5b", ' +0b1') |
| test(100, "+#b", '+0b1100100') |
| test(100, "#012b", '0b0001100100') |
| test(-100, "#012b", '-0b001100100') |
| |
| test(0, "#o", '0o0') |
| test(0, "-#o", '0o0') |
| test(1, "-#o", '0o1') |
| test(-1, "-#o", '-0o1') |
| test(-1, "-#5o", ' -0o1') |
| test(1, "+#5o", ' +0o1') |
| test(100, "+#o", '+0o144') |
| test(100, "#012o", '0o0000000144') |
| test(-100, "#012o", '-0o000000144') |
| |
| test(0, "#x", '0x0') |
| test(0, "-#x", '0x0') |
| test(1, "-#x", '0x1') |
| test(-1, "-#x", '-0x1') |
| test(-1, "-#5x", ' -0x1') |
| test(1, "+#5x", ' +0x1') |
| test(100, "+#x", '+0x64') |
| test(100, "#012x", '0x0000000064') |
| test(-100, "#012x", '-0x000000064') |
| test(123456, "#012x", '0x000001e240') |
| test(-123456, "#012x", '-0x00001e240') |
| |
| test(0, "#X", '0X0') |
| test(0, "-#X", '0X0') |
| test(1, "-#X", '0X1') |
| test(-1, "-#X", '-0X1') |
| test(-1, "-#5X", ' -0X1') |
| test(1, "+#5X", ' +0X1') |
| test(100, "+#X", '+0X64') |
| test(100, "#012X", '0X0000000064') |
| test(-100, "#012X", '-0X000000064') |
| test(123456, "#012X", '0X000001E240') |
| test(-123456, "#012X", '-0X00001E240') |
| |
| test(123, ',', '123') |
| test(-123, ',', '-123') |
| test(1234, ',', '1,234') |
| test(-1234, ',', '-1,234') |
| test(123456, ',', '123,456') |
| test(-123456, ',', '-123,456') |
| test(1234567, ',', '1,234,567') |
| test(-1234567, ',', '-1,234,567') |
| |
| # issue 5782, commas with no specifier type |
| test(1234, '010,', '00,001,234') |
| |
| # Unified type for integers |
| test(10**100, 'd', '1' + '0' * 100) |
| test(10**100+100, 'd', '1' + '0' * 97 + '100') |
| |
| # make sure these are errors |
| |
| # precision disallowed |
| self.assertRaises(ValueError, 3 .__format__, "1.3") |
| # sign not allowed with 'c' |
| self.assertRaises(ValueError, 3 .__format__, "+c") |
| # format spec must be string |
| self.assertRaises(TypeError, 3 .__format__, None) |
| self.assertRaises(TypeError, 3 .__format__, 0) |
| # can't have ',' with 'n' |
| self.assertRaises(ValueError, 3 .__format__, ",n") |
| # can't have ',' with 'c' |
| self.assertRaises(ValueError, 3 .__format__, ",c") |
| # can't have '#' with 'c' |
| self.assertRaises(ValueError, 3 .__format__, "#c") |
| |
| # ensure that only int and float type specifiers work |
| for format_spec in ([chr(x) for x in range(ord('a'), ord('z')+1)] + |
| [chr(x) for x in range(ord('A'), ord('Z')+1)]): |
| if not format_spec in 'bcdoxXeEfFgGn%': |
| self.assertRaises(ValueError, 0 .__format__, format_spec) |
| self.assertRaises(ValueError, 1 .__format__, format_spec) |
| self.assertRaises(ValueError, (-1) .__format__, format_spec) |
| |
| # ensure that float type specifiers work; format converts |
| # the int to a float |
| for format_spec in 'eEfFgG%': |
| for value in [0, 1, -1, 100, -100, 1234567890, -1234567890]: |
| self.assertEqual(value.__format__(format_spec), |
| float(value).__format__(format_spec)) |
| |
| # Issue 6902 |
| test(123456, "0<20", '12345600000000000000') |
| test(123456, "1<20", '12345611111111111111') |
| test(123456, "*<20", '123456**************') |
| test(123456, "0>20", '00000000000000123456') |
| test(123456, "1>20", '11111111111111123456') |
| test(123456, "*>20", '**************123456') |
| test(123456, "0=20", '00000000000000123456') |
| test(123456, "1=20", '11111111111111123456') |
| test(123456, "*=20", '**************123456') |
| |
| @run_with_locale('LC_NUMERIC', 'en_US.UTF8') |
| def test_float__format__locale(self): |
| # test locale support for __format__ code 'n' |
| |
| for i in range(-10, 10): |
| x = 1234567890.0 * (10.0 ** i) |
| self.assertEqual(locale.format('%g', x, grouping=True), format(x, 'n')) |
| self.assertEqual(locale.format('%.10g', x, grouping=True), format(x, '.10n')) |
| |
| @run_with_locale('LC_NUMERIC', 'en_US.UTF8') |
| def test_int__format__locale(self): |
| # test locale support for __format__ code 'n' for integers |
| |
| x = 123456789012345678901234567890 |
| for i in range(0, 30): |
| self.assertEqual(locale.format('%d', x, grouping=True), format(x, 'n')) |
| |
| # move to the next integer to test |
| x = x // 10 |
| |
| rfmt = ">20n" |
| lfmt = "<20n" |
| cfmt = "^20n" |
| for x in (1234, 12345, 123456, 1234567, 12345678, 123456789, 1234567890, 12345678900): |
| self.assertEqual(len(format(0, rfmt)), len(format(x, rfmt))) |
| self.assertEqual(len(format(0, lfmt)), len(format(x, lfmt))) |
| self.assertEqual(len(format(0, cfmt)), len(format(x, cfmt))) |
| |
| def test_float__format__(self): |
| def test(f, format_spec, result): |
| self.assertEqual(f.__format__(format_spec), result) |
| self.assertEqual(format(f, format_spec), result) |
| |
| test(0.0, 'f', '0.000000') |
| |
| # the default is 'g', except for empty format spec |
| test(0.0, '', '0.0') |
| test(0.01, '', '0.01') |
| test(0.01, 'g', '0.01') |
| |
| # test for issue 3411 |
| test(1.23, '1', '1.23') |
| test(-1.23, '1', '-1.23') |
| test(1.23, '1g', '1.23') |
| test(-1.23, '1g', '-1.23') |
| |
| test( 1.0, ' g', ' 1') |
| test(-1.0, ' g', '-1') |
| test( 1.0, '+g', '+1') |
| test(-1.0, '+g', '-1') |
| test(1.1234e200, 'g', '1.1234e+200') |
| test(1.1234e200, 'G', '1.1234E+200') |
| |
| |
| test(1.0, 'f', '1.000000') |
| |
| test(-1.0, 'f', '-1.000000') |
| |
| test( 1.0, ' f', ' 1.000000') |
| test(-1.0, ' f', '-1.000000') |
| test( 1.0, '+f', '+1.000000') |
| test(-1.0, '+f', '-1.000000') |
| |
| # Python versions <= 3.0 switched from 'f' to 'g' formatting for |
| # values larger than 1e50. No longer. |
| f = 1.1234e90 |
| for fmt in 'f', 'F': |
| # don't do a direct equality check, since on some |
| # platforms only the first few digits of dtoa |
| # will be reliable |
| result = f.__format__(fmt) |
| self.assertEqual(len(result), 98) |
| self.assertEqual(result[-7], '.') |
| self.assertIn(result[:12], ('112340000000', '112339999999')) |
| f = 1.1234e200 |
| for fmt in 'f', 'F': |
| result = f.__format__(fmt) |
| self.assertEqual(len(result), 208) |
| self.assertEqual(result[-7], '.') |
| self.assertIn(result[:12], ('112340000000', '112339999999')) |
| |
| |
| test( 1.0, 'e', '1.000000e+00') |
| test(-1.0, 'e', '-1.000000e+00') |
| test( 1.0, 'E', '1.000000E+00') |
| test(-1.0, 'E', '-1.000000E+00') |
| test(1.1234e20, 'e', '1.123400e+20') |
| test(1.1234e20, 'E', '1.123400E+20') |
| |
| # No format code means use g, but must have a decimal |
| # and a number after the decimal. This is tricky, because |
| # a totaly empty format specifier means something else. |
| # So, just use a sign flag |
| test(1e200, '+g', '+1e+200') |
| test(1e200, '+', '+1e+200') |
| |
| test(1.1e200, '+g', '+1.1e+200') |
| test(1.1e200, '+', '+1.1e+200') |
| |
| # 0 padding |
| test(1234., '010f', '1234.000000') |
| test(1234., '011f', '1234.000000') |
| test(1234., '012f', '01234.000000') |
| test(-1234., '011f', '-1234.000000') |
| test(-1234., '012f', '-1234.000000') |
| test(-1234., '013f', '-01234.000000') |
| test(-1234.12341234, '013f', '-01234.123412') |
| test(-123456.12341234, '011.2f', '-0123456.12') |
| |
| # issue 5782, commas with no specifier type |
| test(1.2, '010,.2', '0,000,001.2') |
| |
| # 0 padding with commas |
| test(1234., '011,f', '1,234.000000') |
| test(1234., '012,f', '1,234.000000') |
| test(1234., '013,f', '01,234.000000') |
| test(-1234., '012,f', '-1,234.000000') |
| test(-1234., '013,f', '-1,234.000000') |
| test(-1234., '014,f', '-01,234.000000') |
| test(-12345., '015,f', '-012,345.000000') |
| test(-123456., '016,f', '-0,123,456.000000') |
| test(-123456., '017,f', '-0,123,456.000000') |
| test(-123456.12341234, '017,f', '-0,123,456.123412') |
| test(-123456.12341234, '013,.2f', '-0,123,456.12') |
| |
| # % formatting |
| test(-1.0, '%', '-100.000000%') |
| |
| # format spec must be string |
| self.assertRaises(TypeError, 3.0.__format__, None) |
| self.assertRaises(TypeError, 3.0.__format__, 0) |
| |
| # other format specifiers shouldn't work on floats, |
| # in particular int specifiers |
| for format_spec in ([chr(x) for x in range(ord('a'), ord('z')+1)] + |
| [chr(x) for x in range(ord('A'), ord('Z')+1)]): |
| if not format_spec in 'eEfFgGn%': |
| self.assertRaises(ValueError, format, 0.0, format_spec) |
| self.assertRaises(ValueError, format, 1.0, format_spec) |
| self.assertRaises(ValueError, format, -1.0, format_spec) |
| self.assertRaises(ValueError, format, 1e100, format_spec) |
| self.assertRaises(ValueError, format, -1e100, format_spec) |
| self.assertRaises(ValueError, format, 1e-100, format_spec) |
| self.assertRaises(ValueError, format, -1e-100, format_spec) |
| |
| # Alternate float formatting |
| test(1.0, '.0e', '1e+00') |
| test(1.0, '#.0e', '1.e+00') |
| test(1.0, '.0f', '1') |
| test(1.0, '#.0f', '1.') |
| test(1.1, 'g', '1.1') |
| test(1.1, '#g', '1.10000') |
| test(1.0, '.0%', '100%') |
| test(1.0, '#.0%', '100.%') |
| |
| # Issue 7094: Alternate formatting (specified by #) |
| test(1.0, '0e', '1.000000e+00') |
| test(1.0, '#0e', '1.000000e+00') |
| test(1.0, '0f', '1.000000' ) |
| test(1.0, '#0f', '1.000000') |
| test(1.0, '.1e', '1.0e+00') |
| test(1.0, '#.1e', '1.0e+00') |
| test(1.0, '.1f', '1.0') |
| test(1.0, '#.1f', '1.0') |
| test(1.0, '.1%', '100.0%') |
| test(1.0, '#.1%', '100.0%') |
| |
| # Issue 6902 |
| test(12345.6, "0<20", '12345.60000000000000') |
| test(12345.6, "1<20", '12345.61111111111111') |
| test(12345.6, "*<20", '12345.6*************') |
| test(12345.6, "0>20", '000000000000012345.6') |
| test(12345.6, "1>20", '111111111111112345.6') |
| test(12345.6, "*>20", '*************12345.6') |
| test(12345.6, "0=20", '000000000000012345.6') |
| test(12345.6, "1=20", '111111111111112345.6') |
| test(12345.6, "*=20", '*************12345.6') |
| |
| def test_format_spec_errors(self): |
| # int, float, and string all share the same format spec |
| # mini-language parser. |
| |
| # Check that we can't ask for too many digits. This is |
| # probably a CPython specific test. It tries to put the width |
| # into a C long. |
| self.assertRaises(ValueError, format, 0, '1'*10000 + 'd') |
| |
| # Similar with the precision. |
| self.assertRaises(ValueError, format, 0, '.' + '1'*10000 + 'd') |
| |
| # And may as well test both. |
| self.assertRaises(ValueError, format, 0, '1'*1000 + '.' + '1'*10000 + 'd') |
| |
| # Make sure commas aren't allowed with various type codes |
| for code in 'xXobns': |
| self.assertRaises(ValueError, format, 0, ',' + code) |
| |
| def test_internal_sizes(self): |
| self.assertGreater(object.__basicsize__, 0) |
| self.assertGreater(tuple.__itemsize__, 0) |
| |
| |
| class MappingProxyTests(unittest.TestCase): |
| mappingproxy = types.MappingProxyType |
| |
| def test_constructor(self): |
| class userdict(dict): |
| pass |
| |
| mapping = {'x': 1, 'y': 2} |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| mapping = userdict(x=1, y=2) |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| mapping = collections.ChainMap({'x': 1}, {'y': 2}) |
| self.assertEqual(self.mappingproxy(mapping), mapping) |
| |
| self.assertRaises(TypeError, self.mappingproxy, 10) |
| self.assertRaises(TypeError, self.mappingproxy, ("a", "tuple")) |
| self.assertRaises(TypeError, self.mappingproxy, ["a", "list"]) |
| |
| def test_methods(self): |
| attrs = set(dir(self.mappingproxy({}))) - set(dir(object())) |
| self.assertEqual(attrs, { |
| '__contains__', |
| '__getitem__', |
| '__iter__', |
| '__len__', |
| 'copy', |
| 'get', |
| 'items', |
| 'keys', |
| 'values', |
| }) |
| |
| def test_get(self): |
| view = self.mappingproxy({'a': 'A', 'b': 'B'}) |
| self.assertEqual(view['a'], 'A') |
| self.assertEqual(view['b'], 'B') |
| self.assertRaises(KeyError, view.__getitem__, 'xxx') |
| self.assertEqual(view.get('a'), 'A') |
| self.assertIsNone(view.get('xxx')) |
| self.assertEqual(view.get('xxx', 42), 42) |
| |
| def test_missing(self): |
| class dictmissing(dict): |
| def __missing__(self, key): |
| return "missing=%s" % key |
| |
| view = self.mappingproxy(dictmissing(x=1)) |
| self.assertEqual(view['x'], 1) |
| self.assertEqual(view['y'], 'missing=y') |
| self.assertEqual(view.get('x'), 1) |
| self.assertEqual(view.get('y'), None) |
| self.assertEqual(view.get('y', 42), 42) |
| self.assertTrue('x' in view) |
| self.assertFalse('y' in view) |
| |
| def test_customdict(self): |
| class customdict(dict): |
| def __contains__(self, key): |
| if key == 'magic': |
| return True |
| else: |
| return dict.__contains__(self, key) |
| |
| def __iter__(self): |
| return iter(('iter',)) |
| |
| def __len__(self): |
| return 500 |
| |
| def copy(self): |
| return 'copy' |
| |
| def keys(self): |
| return 'keys' |
| |
| def items(self): |
| return 'items' |
| |
| def values(self): |
| return 'values' |
| |
| def __getitem__(self, key): |
| return "getitem=%s" % dict.__getitem__(self, key) |
| |
| def get(self, key, default=None): |
| return "get=%s" % dict.get(self, key, 'default=%r' % default) |
| |
| custom = customdict({'key': 'value'}) |
| view = self.mappingproxy(custom) |
| self.assertTrue('key' in view) |
| self.assertTrue('magic' in view) |
| self.assertFalse('xxx' in view) |
| self.assertEqual(view['key'], 'getitem=value') |
| self.assertRaises(KeyError, view.__getitem__, 'xxx') |
| self.assertEqual(tuple(view), ('iter',)) |
| self.assertEqual(len(view), 500) |
| self.assertEqual(view.copy(), 'copy') |
| self.assertEqual(view.get('key'), 'get=value') |
| self.assertEqual(view.get('xxx'), 'get=default=None') |
| self.assertEqual(view.items(), 'items') |
| self.assertEqual(view.keys(), 'keys') |
| self.assertEqual(view.values(), 'values') |
| |
| def test_chainmap(self): |
| d1 = {'x': 1} |
| d2 = {'y': 2} |
| mapping = collections.ChainMap(d1, d2) |
| view = self.mappingproxy(mapping) |
| self.assertTrue('x' in view) |
| self.assertTrue('y' in view) |
| self.assertFalse('z' in view) |
| self.assertEqual(view['x'], 1) |
| self.assertEqual(view['y'], 2) |
| self.assertRaises(KeyError, view.__getitem__, 'z') |
| self.assertEqual(tuple(sorted(view)), ('x', 'y')) |
| self.assertEqual(len(view), 2) |
| copy = view.copy() |
| self.assertIsNot(copy, mapping) |
| self.assertIsInstance(copy, collections.ChainMap) |
| self.assertEqual(copy, mapping) |
| self.assertEqual(view.get('x'), 1) |
| self.assertEqual(view.get('y'), 2) |
| self.assertIsNone(view.get('z')) |
| self.assertEqual(tuple(sorted(view.items())), (('x', 1), ('y', 2))) |
| self.assertEqual(tuple(sorted(view.keys())), ('x', 'y')) |
| self.assertEqual(tuple(sorted(view.values())), (1, 2)) |
| |
| def test_contains(self): |
| view = self.mappingproxy(dict.fromkeys('abc')) |
| self.assertTrue('a' in view) |
| self.assertTrue('b' in view) |
| self.assertTrue('c' in view) |
| self.assertFalse('xxx' in view) |
| |
| def test_views(self): |
| mapping = {} |
| view = self.mappingproxy(mapping) |
| keys = view.keys() |
| values = view.values() |
| items = view.items() |
| self.assertEqual(list(keys), []) |
| self.assertEqual(list(values), []) |
| self.assertEqual(list(items), []) |
| mapping['key'] = 'value' |
| self.assertEqual(list(keys), ['key']) |
| self.assertEqual(list(values), ['value']) |
| self.assertEqual(list(items), [('key', 'value')]) |
| |
| def test_len(self): |
| for expected in range(6): |
| data = dict.fromkeys('abcde'[:expected]) |
| self.assertEqual(len(data), expected) |
| view = self.mappingproxy(data) |
| self.assertEqual(len(view), expected) |
| |
| def test_iterators(self): |
| keys = ('x', 'y') |
| values = (1, 2) |
| items = tuple(zip(keys, values)) |
| view = self.mappingproxy(dict(items)) |
| self.assertEqual(set(view), set(keys)) |
| self.assertEqual(set(view.keys()), set(keys)) |
| self.assertEqual(set(view.values()), set(values)) |
| self.assertEqual(set(view.items()), set(items)) |
| |
| def test_copy(self): |
| original = {'key1': 27, 'key2': 51, 'key3': 93} |
| view = self.mappingproxy(original) |
| copy = view.copy() |
| self.assertEqual(type(copy), dict) |
| self.assertEqual(copy, original) |
| original['key1'] = 70 |
| self.assertEqual(view['key1'], 70) |
| self.assertEqual(copy['key1'], 27) |
| |
| |
| class ClassCreationTests(unittest.TestCase): |
| |
| class Meta(type): |
| def __init__(cls, name, bases, ns, **kw): |
| super().__init__(name, bases, ns) |
| @staticmethod |
| def __new__(mcls, name, bases, ns, **kw): |
| return super().__new__(mcls, name, bases, ns) |
| @classmethod |
| def __prepare__(mcls, name, bases, **kw): |
| ns = super().__prepare__(name, bases) |
| ns["y"] = 1 |
| ns.update(kw) |
| return ns |
| |
| def test_new_class_basics(self): |
| C = types.new_class("C") |
| self.assertEqual(C.__name__, "C") |
| self.assertEqual(C.__bases__, (object,)) |
| |
| def test_new_class_subclass(self): |
| C = types.new_class("C", (int,)) |
| self.assertTrue(issubclass(C, int)) |
| |
| def test_new_class_meta(self): |
| Meta = self.Meta |
| settings = {"metaclass": Meta, "z": 2} |
| # We do this twice to make sure the passed in dict isn't mutated |
| for i in range(2): |
| C = types.new_class("C" + str(i), (), settings) |
| self.assertIsInstance(C, Meta) |
| self.assertEqual(C.y, 1) |
| self.assertEqual(C.z, 2) |
| |
| def test_new_class_exec_body(self): |
| Meta = self.Meta |
| def func(ns): |
| ns["x"] = 0 |
| C = types.new_class("C", (), {"metaclass": Meta, "z": 2}, func) |
| self.assertIsInstance(C, Meta) |
| self.assertEqual(C.x, 0) |
| self.assertEqual(C.y, 1) |
| self.assertEqual(C.z, 2) |
| |
| def test_new_class_metaclass_keywords(self): |
| #Test that keywords are passed to the metaclass: |
| def meta_func(name, bases, ns, **kw): |
| return name, bases, ns, kw |
| res = types.new_class("X", |
| (int, object), |
| dict(metaclass=meta_func, x=0)) |
| self.assertEqual(res, ("X", (int, object), {}, {"x": 0})) |
| |
| def test_new_class_defaults(self): |
| # Test defaults/keywords: |
| C = types.new_class("C", (), {}, None) |
| self.assertEqual(C.__name__, "C") |
| self.assertEqual(C.__bases__, (object,)) |
| |
| def test_new_class_meta_with_base(self): |
| Meta = self.Meta |
| def func(ns): |
| ns["x"] = 0 |
| C = types.new_class(name="C", |
| bases=(int,), |
| kwds=dict(metaclass=Meta, z=2), |
| exec_body=func) |
| self.assertTrue(issubclass(C, int)) |
| self.assertIsInstance(C, Meta) |
| self.assertEqual(C.x, 0) |
| self.assertEqual(C.y, 1) |
| self.assertEqual(C.z, 2) |
| |
| # Many of the following tests are derived from test_descr.py |
| def test_prepare_class(self): |
| # Basic test of metaclass derivation |
| expected_ns = {} |
| class A(type): |
| def __new__(*args, **kwargs): |
| return type.__new__(*args, **kwargs) |
| |
| def __prepare__(*args): |
| return expected_ns |
| |
| B = types.new_class("B", (object,)) |
| C = types.new_class("C", (object,), {"metaclass": A}) |
| |
| # The most derived metaclass of D is A rather than type. |
| meta, ns, kwds = types.prepare_class("D", (B, C), {"metaclass": type}) |
| self.assertIs(meta, A) |
| self.assertIs(ns, expected_ns) |
| self.assertEqual(len(kwds), 0) |
| |
| def test_metaclass_derivation(self): |
| # issue1294232: correct metaclass calculation |
| new_calls = [] # to check the order of __new__ calls |
| class AMeta(type): |
| def __new__(mcls, name, bases, ns): |
| new_calls.append('AMeta') |
| return super().__new__(mcls, name, bases, ns) |
| @classmethod |
| def __prepare__(mcls, name, bases): |
| return {} |
| |
| class BMeta(AMeta): |
| def __new__(mcls, name, bases, ns): |
| new_calls.append('BMeta') |
| return super().__new__(mcls, name, bases, ns) |
| @classmethod |
| def __prepare__(mcls, name, bases): |
| ns = super().__prepare__(name, bases) |
| ns['BMeta_was_here'] = True |
| return ns |
| |
| A = types.new_class("A", (), {"metaclass": AMeta}) |
| self.assertEqual(new_calls, ['AMeta']) |
| new_calls.clear() |
| |
| B = types.new_class("B", (), {"metaclass": BMeta}) |
| # BMeta.__new__ calls AMeta.__new__ with super: |
| self.assertEqual(new_calls, ['BMeta', 'AMeta']) |
| new_calls.clear() |
| |
| C = types.new_class("C", (A, B)) |
| # The most derived metaclass is BMeta: |
| self.assertEqual(new_calls, ['BMeta', 'AMeta']) |
| new_calls.clear() |
| # BMeta.__prepare__ should've been called: |
| self.assertIn('BMeta_was_here', C.__dict__) |
| |
| # The order of the bases shouldn't matter: |
| C2 = types.new_class("C2", (B, A)) |
| self.assertEqual(new_calls, ['BMeta', 'AMeta']) |
| new_calls.clear() |
| self.assertIn('BMeta_was_here', C2.__dict__) |
| |
| # Check correct metaclass calculation when a metaclass is declared: |
| D = types.new_class("D", (C,), {"metaclass": type}) |
| self.assertEqual(new_calls, ['BMeta', 'AMeta']) |
| new_calls.clear() |
| self.assertIn('BMeta_was_here', D.__dict__) |
| |
| E = types.new_class("E", (C,), {"metaclass": AMeta}) |
| self.assertEqual(new_calls, ['BMeta', 'AMeta']) |
| new_calls.clear() |
| self.assertIn('BMeta_was_here', E.__dict__) |
| |
| def test_metaclass_override_function(self): |
| # Special case: the given metaclass isn't a class, |
| # so there is no metaclass calculation. |
| class A(metaclass=self.Meta): |
| pass |
| |
| marker = object() |
| def func(*args, **kwargs): |
| return marker |
| |
| X = types.new_class("X", (), {"metaclass": func}) |
| Y = types.new_class("Y", (object,), {"metaclass": func}) |
| Z = types.new_class("Z", (A,), {"metaclass": func}) |
| self.assertIs(marker, X) |
| self.assertIs(marker, Y) |
| self.assertIs(marker, Z) |
| |
| def test_metaclass_override_callable(self): |
| # The given metaclass is a class, |
| # but not a descendant of type. |
| new_calls = [] # to check the order of __new__ calls |
| prepare_calls = [] # to track __prepare__ calls |
| class ANotMeta: |
| def __new__(mcls, *args, **kwargs): |
| new_calls.append('ANotMeta') |
| return super().__new__(mcls) |
| @classmethod |
| def __prepare__(mcls, name, bases): |
| prepare_calls.append('ANotMeta') |
| return {} |
| |
| class BNotMeta(ANotMeta): |
| def __new__(mcls, *args, **kwargs): |
| new_calls.append('BNotMeta') |
| return super().__new__(mcls) |
| @classmethod |
| def __prepare__(mcls, name, bases): |
| prepare_calls.append('BNotMeta') |
| return super().__prepare__(name, bases) |
| |
| A = types.new_class("A", (), {"metaclass": ANotMeta}) |
| self.assertIs(ANotMeta, type(A)) |
| self.assertEqual(prepare_calls, ['ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['ANotMeta']) |
| new_calls.clear() |
| |
| B = types.new_class("B", (), {"metaclass": BNotMeta}) |
| self.assertIs(BNotMeta, type(B)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| C = types.new_class("C", (A, B)) |
| self.assertIs(BNotMeta, type(C)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| C2 = types.new_class("C2", (B, A)) |
| self.assertIs(BNotMeta, type(C2)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| # This is a TypeError, because of a metaclass conflict: |
| # BNotMeta is neither a subclass, nor a superclass of type |
| with self.assertRaises(TypeError): |
| D = types.new_class("D", (C,), {"metaclass": type}) |
| |
| E = types.new_class("E", (C,), {"metaclass": ANotMeta}) |
| self.assertIs(BNotMeta, type(E)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| F = types.new_class("F", (object(), C)) |
| self.assertIs(BNotMeta, type(F)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| F2 = types.new_class("F2", (C, object())) |
| self.assertIs(BNotMeta, type(F2)) |
| self.assertEqual(prepare_calls, ['BNotMeta', 'ANotMeta']) |
| prepare_calls.clear() |
| self.assertEqual(new_calls, ['BNotMeta', 'ANotMeta']) |
| new_calls.clear() |
| |
| # TypeError: BNotMeta is neither a |
| # subclass, nor a superclass of int |
| with self.assertRaises(TypeError): |
| X = types.new_class("X", (C, int())) |
| with self.assertRaises(TypeError): |
| X = types.new_class("X", (int(), C)) |
| |
| def test_one_argument_type(self): |
| expected_message = 'type.__new__() takes exactly 3 arguments (1 given)' |
| |
| # Only type itself can use the one-argument form (#27157) |
| self.assertIs(type(5), int) |
| |
| class M(type): |
| pass |
| with self.assertRaises(TypeError) as cm: |
| M(5) |
| self.assertEqual(str(cm.exception), expected_message) |
| |
| class N(type, metaclass=M): |
| pass |
| with self.assertRaises(TypeError) as cm: |
| N(5) |
| self.assertEqual(str(cm.exception), expected_message) |
| |
| |
| class SimpleNamespaceTests(unittest.TestCase): |
| |
| def test_constructor(self): |
| ns1 = types.SimpleNamespace() |
| ns2 = types.SimpleNamespace(x=1, y=2) |
| ns3 = types.SimpleNamespace(**dict(x=1, y=2)) |
| |
| with self.assertRaises(TypeError): |
| types.SimpleNamespace(1, 2, 3) |
| |
| self.assertEqual(len(ns1.__dict__), 0) |
| self.assertEqual(vars(ns1), {}) |
| self.assertEqual(len(ns2.__dict__), 2) |
| self.assertEqual(vars(ns2), {'y': 2, 'x': 1}) |
| self.assertEqual(len(ns3.__dict__), 2) |
| self.assertEqual(vars(ns3), {'y': 2, 'x': 1}) |
| |
| def test_unbound(self): |
| ns1 = vars(types.SimpleNamespace()) |
| ns2 = vars(types.SimpleNamespace(x=1, y=2)) |
| |
| self.assertEqual(ns1, {}) |
| self.assertEqual(ns2, {'y': 2, 'x': 1}) |
| |
| def test_underlying_dict(self): |
| ns1 = types.SimpleNamespace() |
| ns2 = types.SimpleNamespace(x=1, y=2) |
| ns3 = types.SimpleNamespace(a=True, b=False) |
| mapping = ns3.__dict__ |
| del ns3 |
| |
| self.assertEqual(ns1.__dict__, {}) |
| self.assertEqual(ns2.__dict__, {'y': 2, 'x': 1}) |
| self.assertEqual(mapping, dict(a=True, b=False)) |
| |
| def test_attrget(self): |
| ns = types.SimpleNamespace(x=1, y=2, w=3) |
| |
| self.assertEqual(ns.x, 1) |
| self.assertEqual(ns.y, 2) |
| self.assertEqual(ns.w, 3) |
| with self.assertRaises(AttributeError): |
| ns.z |
| |
| def test_attrset(self): |
| ns1 = types.SimpleNamespace() |
| ns2 = types.SimpleNamespace(x=1, y=2, w=3) |
| ns1.a = 'spam' |
| ns1.b = 'ham' |
| ns2.z = 4 |
| ns2.theta = None |
| |
| self.assertEqual(ns1.__dict__, dict(a='spam', b='ham')) |
| self.assertEqual(ns2.__dict__, dict(x=1, y=2, w=3, z=4, theta=None)) |
| |
| def test_attrdel(self): |
| ns1 = types.SimpleNamespace() |
| ns2 = types.SimpleNamespace(x=1, y=2, w=3) |
| |
| with self.assertRaises(AttributeError): |
| del ns1.spam |
| with self.assertRaises(AttributeError): |
| del ns2.spam |
| |
| del ns2.y |
| self.assertEqual(vars(ns2), dict(w=3, x=1)) |
| ns2.y = 'spam' |
| self.assertEqual(vars(ns2), dict(w=3, x=1, y='spam')) |
| del ns2.y |
| self.assertEqual(vars(ns2), dict(w=3, x=1)) |
| |
| ns1.spam = 5 |
| self.assertEqual(vars(ns1), dict(spam=5)) |
| del ns1.spam |
| self.assertEqual(vars(ns1), {}) |
| |
| def test_repr(self): |
| ns1 = types.SimpleNamespace(x=1, y=2, w=3) |
| ns2 = types.SimpleNamespace() |
| ns2.x = "spam" |
| ns2._y = 5 |
| name = "namespace" |
| |
| self.assertEqual(repr(ns1), "{name}(w=3, x=1, y=2)".format(name=name)) |
| self.assertEqual(repr(ns2), "{name}(_y=5, x='spam')".format(name=name)) |
| |
| def test_equal(self): |
| ns1 = types.SimpleNamespace(x=1) |
| ns2 = types.SimpleNamespace() |
| ns2.x = 1 |
| |
| self.assertEqual(types.SimpleNamespace(), types.SimpleNamespace()) |
| self.assertEqual(ns1, ns2) |
| self.assertNotEqual(ns2, types.SimpleNamespace()) |
| |
| def test_nested(self): |
| ns1 = types.SimpleNamespace(a=1, b=2) |
| ns2 = types.SimpleNamespace() |
| ns3 = types.SimpleNamespace(x=ns1) |
| ns2.spam = ns1 |
| ns2.ham = '?' |
| ns2.spam = ns3 |
| |
| self.assertEqual(vars(ns1), dict(a=1, b=2)) |
| self.assertEqual(vars(ns2), dict(spam=ns3, ham='?')) |
| self.assertEqual(ns2.spam, ns3) |
| self.assertEqual(vars(ns3), dict(x=ns1)) |
| self.assertEqual(ns3.x.a, 1) |
| |
| def test_recursive(self): |
| ns1 = types.SimpleNamespace(c='cookie') |
| ns2 = types.SimpleNamespace() |
| ns3 = types.SimpleNamespace(x=1) |
| ns1.spam = ns1 |
| ns2.spam = ns3 |
| ns3.spam = ns2 |
| |
| self.assertEqual(ns1.spam, ns1) |
| self.assertEqual(ns1.spam.spam, ns1) |
| self.assertEqual(ns1.spam.spam, ns1.spam) |
| self.assertEqual(ns2.spam, ns3) |
| self.assertEqual(ns3.spam, ns2) |
| self.assertEqual(ns2.spam.spam, ns2) |
| |
| def test_recursive_repr(self): |
| ns1 = types.SimpleNamespace(c='cookie') |
| ns2 = types.SimpleNamespace() |
| ns3 = types.SimpleNamespace(x=1) |
| ns1.spam = ns1 |
| ns2.spam = ns3 |
| ns3.spam = ns2 |
| name = "namespace" |
| repr1 = "{name}(c='cookie', spam={name}(...))".format(name=name) |
| repr2 = "{name}(spam={name}(spam={name}(...), x=1))".format(name=name) |
| |
| self.assertEqual(repr(ns1), repr1) |
| self.assertEqual(repr(ns2), repr2) |
| |
| def test_as_dict(self): |
| ns = types.SimpleNamespace(spam='spamspamspam') |
| |
| with self.assertRaises(TypeError): |
| len(ns) |
| with self.assertRaises(TypeError): |
| iter(ns) |
| with self.assertRaises(TypeError): |
| 'spam' in ns |
| with self.assertRaises(TypeError): |
| ns['spam'] |
| |
| def test_subclass(self): |
| class Spam(types.SimpleNamespace): |
| pass |
| |
| spam = Spam(ham=8, eggs=9) |
| |
| self.assertIs(type(spam), Spam) |
| self.assertEqual(vars(spam), {'ham': 8, 'eggs': 9}) |
| |
| def test_pickle(self): |
| ns = types.SimpleNamespace(breakfast="spam", lunch="spam") |
| |
| for protocol in range(pickle.HIGHEST_PROTOCOL + 1): |
| pname = "protocol {}".format(protocol) |
| try: |
| ns_pickled = pickle.dumps(ns, protocol) |
| except TypeError as e: |
| raise TypeError(pname) from e |
| ns_roundtrip = pickle.loads(ns_pickled) |
| |
| self.assertEqual(ns, ns_roundtrip, pname) |
| |
| def test_fake_namespace_compare(self): |
| # Issue #24257: Incorrect use of PyObject_IsInstance() caused |
| # SystemError. |
| class FakeSimpleNamespace(str): |
| __class__ = types.SimpleNamespace |
| self.assertFalse(types.SimpleNamespace() == FakeSimpleNamespace()) |
| self.assertTrue(types.SimpleNamespace() != FakeSimpleNamespace()) |
| with self.assertRaises(TypeError): |
| types.SimpleNamespace() < FakeSimpleNamespace() |
| with self.assertRaises(TypeError): |
| types.SimpleNamespace() <= FakeSimpleNamespace() |
| with self.assertRaises(TypeError): |
| types.SimpleNamespace() > FakeSimpleNamespace() |
| with self.assertRaises(TypeError): |
| types.SimpleNamespace() >= FakeSimpleNamespace() |
| |
| |
| class CoroutineTests(unittest.TestCase): |
| def test_wrong_args(self): |
| samples = [None, 1, object()] |
| for sample in samples: |
| with self.assertRaisesRegex(TypeError, |
| 'types.coroutine.*expects a callable'): |
| types.coroutine(sample) |
| |
| def test_non_gen_values(self): |
| @types.coroutine |
| def foo(): |
| return 'spam' |
| self.assertEqual(foo(), 'spam') |
| |
| class Awaitable: |
| def __await__(self): |
| return () |
| aw = Awaitable() |
| @types.coroutine |
| def foo(): |
| return aw |
| self.assertIs(aw, foo()) |
| |
| # decorate foo second time |
| foo = types.coroutine(foo) |
| self.assertIs(aw, foo()) |
| |
| def test_async_def(self): |
| # Test that types.coroutine passes 'async def' coroutines |
| # without modification |
| |
| async def foo(): pass |
| foo_code = foo.__code__ |
| foo_flags = foo.__code__.co_flags |
| decorated_foo = types.coroutine(foo) |
| self.assertIs(foo, decorated_foo) |
| self.assertEqual(foo.__code__.co_flags, foo_flags) |
| self.assertIs(decorated_foo.__code__, foo_code) |
| |
| foo_coro = foo() |
| def bar(): return foo_coro |
| for _ in range(2): |
| bar = types.coroutine(bar) |
| coro = bar() |
| self.assertIs(foo_coro, coro) |
| self.assertEqual(coro.cr_code.co_flags, foo_flags) |
| coro.close() |
| |
| def test_duck_coro(self): |
| class CoroLike: |
| def send(self): pass |
| def throw(self): pass |
| def close(self): pass |
| def __await__(self): return self |
| |
| coro = CoroLike() |
| @types.coroutine |
| def foo(): |
| return coro |
| self.assertIs(foo(), coro) |
| self.assertIs(foo().__await__(), coro) |
| |
| def test_duck_corogen(self): |
| class CoroGenLike: |
| def send(self): pass |
| def throw(self): pass |
| def close(self): pass |
| def __await__(self): return self |
| def __iter__(self): return self |
| def __next__(self): pass |
| |
| coro = CoroGenLike() |
| @types.coroutine |
| def foo(): |
| return coro |
| self.assertIs(foo(), coro) |
| self.assertIs(foo().__await__(), coro) |
| |
| def test_duck_gen(self): |
| class GenLike: |
| def send(self): pass |
| def throw(self): pass |
| def close(self): pass |
| def __iter__(self): pass |
| def __next__(self): pass |
| |
| # Setup generator mock object |
| gen = unittest.mock.MagicMock(GenLike) |
| gen.__iter__ = lambda gen: gen |
| gen.__name__ = 'gen' |
| gen.__qualname__ = 'test.gen' |
| self.assertIsInstance(gen, collections.abc.Generator) |
| self.assertIs(gen, iter(gen)) |
| |
| @types.coroutine |
| def foo(): return gen |
| |
| wrapper = foo() |
| self.assertIsInstance(wrapper, types._GeneratorWrapper) |
| self.assertIs(wrapper.__await__(), wrapper) |
| # Wrapper proxies duck generators completely: |
| self.assertIs(iter(wrapper), wrapper) |
| |
| self.assertIsInstance(wrapper, collections.abc.Coroutine) |
| self.assertIsInstance(wrapper, collections.abc.Awaitable) |
| |
| self.assertIs(wrapper.__qualname__, gen.__qualname__) |
| self.assertIs(wrapper.__name__, gen.__name__) |
| |
| # Test AttributeErrors |
| for name in {'gi_running', 'gi_frame', 'gi_code', 'gi_yieldfrom', |
| 'cr_running', 'cr_frame', 'cr_code', 'cr_await'}: |
| with self.assertRaises(AttributeError): |
| getattr(wrapper, name) |
| |
| # Test attributes pass-through |
| gen.gi_running = object() |
| gen.gi_frame = object() |
| gen.gi_code = object() |
| gen.gi_yieldfrom = object() |
| self.assertIs(wrapper.gi_running, gen.gi_running) |
| self.assertIs(wrapper.gi_frame, gen.gi_frame) |
| self.assertIs(wrapper.gi_code, gen.gi_code) |
| self.assertIs(wrapper.gi_yieldfrom, gen.gi_yieldfrom) |
| self.assertIs(wrapper.cr_running, gen.gi_running) |
| self.assertIs(wrapper.cr_frame, gen.gi_frame) |
| self.assertIs(wrapper.cr_code, gen.gi_code) |
| self.assertIs(wrapper.cr_await, gen.gi_yieldfrom) |
| |
| wrapper.close() |
| gen.close.assert_called_once_with() |
| |
| wrapper.send(1) |
| gen.send.assert_called_once_with(1) |
| gen.reset_mock() |
| |
| next(wrapper) |
| gen.__next__.assert_called_once_with() |
| gen.reset_mock() |
| |
| wrapper.throw(1, 2, 3) |
| gen.throw.assert_called_once_with(1, 2, 3) |
| gen.reset_mock() |
| |
| wrapper.throw(1, 2) |
| gen.throw.assert_called_once_with(1, 2) |
| gen.reset_mock() |
| |
| wrapper.throw(1) |
| gen.throw.assert_called_once_with(1) |
| gen.reset_mock() |
| |
| # Test exceptions propagation |
| error = Exception() |
| gen.throw.side_effect = error |
| try: |
| wrapper.throw(1) |
| except Exception as ex: |
| self.assertIs(ex, error) |
| else: |
| self.fail('wrapper did not propagate an exception') |
| |
| # Test invalid args |
| gen.reset_mock() |
| with self.assertRaises(TypeError): |
| wrapper.throw() |
| self.assertFalse(gen.throw.called) |
| with self.assertRaises(TypeError): |
| wrapper.close(1) |
| self.assertFalse(gen.close.called) |
| with self.assertRaises(TypeError): |
| wrapper.send() |
| self.assertFalse(gen.send.called) |
| |
| # Test that we do not double wrap |
| @types.coroutine |
| def bar(): return wrapper |
| self.assertIs(wrapper, bar()) |
| |
| # Test weakrefs support |
| ref = weakref.ref(wrapper) |
| self.assertIs(ref(), wrapper) |
| |
| def test_duck_functional_gen(self): |
| class Generator: |
| """Emulates the following generator (very clumsy): |
| |
| def gen(fut): |
| result = yield fut |
| return result * 2 |
| """ |
| def __init__(self, fut): |
| self._i = 0 |
| self._fut = fut |
| def __iter__(self): |
| return self |
| def __next__(self): |
| return self.send(None) |
| def send(self, v): |
| try: |
| if self._i == 0: |
| assert v is None |
| return self._fut |
| if self._i == 1: |
| raise StopIteration(v * 2) |
| if self._i > 1: |
| raise StopIteration |
| finally: |
| self._i += 1 |
| def throw(self, tp, *exc): |
| self._i = 100 |
| if tp is not GeneratorExit: |
| raise tp |
| def close(self): |
| self.throw(GeneratorExit) |
| |
| @types.coroutine |
| def foo(): return Generator('spam') |
| |
| wrapper = foo() |
| self.assertIsInstance(wrapper, types._GeneratorWrapper) |
| |
| async def corofunc(): |
| return await foo() + 100 |
| coro = corofunc() |
| |
| self.assertEqual(coro.send(None), 'spam') |
| try: |
| coro.send(20) |
| except StopIteration as ex: |
| self.assertEqual(ex.args[0], 140) |
| else: |
| self.fail('StopIteration was expected') |
| |
| def test_gen(self): |
| def gen_func(): |
| yield 1 |
| return (yield 2) |
| gen = gen_func() |
| @types.coroutine |
| def foo(): return gen |
| wrapper = foo() |
| self.assertIsInstance(wrapper, types._GeneratorWrapper) |
| self.assertIs(wrapper.__await__(), gen) |
| |
| for name in ('__name__', '__qualname__', 'gi_code', |
| 'gi_running', 'gi_frame'): |
| self.assertIs(getattr(foo(), name), |
| getattr(gen, name)) |
| self.assertIs(foo().cr_code, gen.gi_code) |
| |
| self.assertEqual(next(wrapper), 1) |
| self.assertEqual(wrapper.send(None), 2) |
| with self.assertRaisesRegex(StopIteration, 'spam'): |
| wrapper.send('spam') |
| |
| gen = gen_func() |
| wrapper = foo() |
| wrapper.send(None) |
| with self.assertRaisesRegex(Exception, 'ham'): |
| wrapper.throw(Exception, Exception('ham')) |
| |
| # decorate foo second time |
| foo = types.coroutine(foo) |
| self.assertIs(foo().__await__(), gen) |
| |
| def test_returning_itercoro(self): |
| @types.coroutine |
| def gen(): |
| yield |
| |
| gencoro = gen() |
| |
| @types.coroutine |
| def foo(): |
| return gencoro |
| |
| self.assertIs(foo(), gencoro) |
| |
| # decorate foo second time |
| foo = types.coroutine(foo) |
| self.assertIs(foo(), gencoro) |
| |
| def test_genfunc(self): |
| def gen(): yield |
| self.assertIs(types.coroutine(gen), gen) |
| self.assertIs(types.coroutine(types.coroutine(gen)), gen) |
| |
| self.assertTrue(gen.__code__.co_flags & inspect.CO_ITERABLE_COROUTINE) |
| self.assertFalse(gen.__code__.co_flags & inspect.CO_COROUTINE) |
| |
| g = gen() |
| self.assertTrue(g.gi_code.co_flags & inspect.CO_ITERABLE_COROUTINE) |
| self.assertFalse(g.gi_code.co_flags & inspect.CO_COROUTINE) |
| |
| self.assertIs(types.coroutine(gen), gen) |
| |
| def test_wrapper_object(self): |
| def gen(): |
| yield |
| @types.coroutine |
| def coro(): |
| return gen() |
| |
| wrapper = coro() |
| self.assertIn('GeneratorWrapper', repr(wrapper)) |
| self.assertEqual(repr(wrapper), str(wrapper)) |
| self.assertTrue(set(dir(wrapper)).issuperset({ |
| '__await__', '__iter__', '__next__', 'cr_code', 'cr_running', |
| 'cr_frame', 'gi_code', 'gi_frame', 'gi_running', 'send', |
| 'close', 'throw'})) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |