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1833 lines (1564 loc) · 64.9 KB
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# Python test set -- part 6, built-in types
from test.support import run_with_locale
import collections.abc
from collections import namedtuple
import inspect
import pickle
import locale
import sys
import types
import unittest.mock
import weakref
import typing
class Example:
pass
class Forward: ...
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_string('%g', x, grouping=True), format(x, 'n'))
self.assertEqual(locale.format_string('%.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_string('%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 totally 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)
def test_slot_wrapper_types(self):
self.assertIsInstance(object.__init__, types.WrapperDescriptorType)
self.assertIsInstance(object.__str__, types.WrapperDescriptorType)
self.assertIsInstance(object.__lt__, types.WrapperDescriptorType)
self.assertIsInstance(int.__lt__, types.WrapperDescriptorType)
def test_method_wrapper_types(self):
self.assertIsInstance(object().__init__, types.MethodWrapperType)
self.assertIsInstance(object().__str__, types.MethodWrapperType)
self.assertIsInstance(object().__lt__, types.MethodWrapperType)
self.assertIsInstance((42).__lt__, types.MethodWrapperType)
def test_method_descriptor_types(self):
self.assertIsInstance(str.join, types.MethodDescriptorType)
self.assertIsInstance(list.append, types.MethodDescriptorType)
self.assertIsInstance(''.join, types.BuiltinMethodType)
self.assertIsInstance([].append, types.BuiltinMethodType)
self.assertIsInstance(int.__dict__['from_bytes'], types.ClassMethodDescriptorType)
self.assertIsInstance(int.from_bytes, types.BuiltinMethodType)
self.assertIsInstance(int.__new__, types.BuiltinMethodType)
def test_or_types_operator(self):
self.assertEqual(int | str, typing.Union[int, str])
self.assertNotEqual(int | list, typing.Union[int, str])
self.assertEqual(str | int, typing.Union[int, str])
self.assertEqual(int | None, typing.Union[int, None])
self.assertEqual(None | int, typing.Union[int, None])
self.assertEqual(int | str | list, typing.Union[int, str, list])
self.assertEqual(int | (str | list), typing.Union[int, str, list])
self.assertEqual(str | (int | list), typing.Union[int, str, list])
self.assertEqual(typing.List | typing.Tuple, typing.Union[typing.List, typing.Tuple])
self.assertEqual(typing.List[int] | typing.Tuple[int], typing.Union[typing.List[int], typing.Tuple[int]])
self.assertEqual(typing.List[int] | None, typing.Union[typing.List[int], None])
self.assertEqual(None | typing.List[int], typing.Union[None, typing.List[int]])
self.assertEqual(str | float | int | complex | int, (int | str) | (float | complex))
self.assertEqual(typing.Union[str, int, typing.List[int]], str | int | typing.List[int])
self.assertEqual(int | int, int)
self.assertEqual(
BaseException |
bool |
bytes |
complex |
float |
int |
list |
map |
set,
typing.Union[
BaseException,
bool,
bytes,
complex,
float,
int,
list,
map,
set,
])
with self.assertRaises(TypeError):
int | 3
with self.assertRaises(TypeError):
3 | int
with self.assertRaises(TypeError):
Example() | int
with self.assertRaises(TypeError):
(int | str) < typing.Union[str, int]
with self.assertRaises(TypeError):
(int | str) < (int | bool)
with self.assertRaises(TypeError):
(int | str) <= (int | str)
with self.assertRaises(TypeError):
# Check that we don't crash if typing.Union does not have a tuple in __args__
x = typing.Union[str, int]
x.__args__ = [str, int]
(int | str ) == x
def test_or_type_operator_with_TypeVar(self):
TV = typing.TypeVar('T')
assert TV | str == typing.Union[TV, str]
assert str | TV == typing.Union[str, TV]
def test_or_type_operator_with_forward(self):
T = typing.TypeVar('T')
ForwardAfter = T | 'Forward'
ForwardBefore = 'Forward' | T
def forward_after(x: ForwardAfter[int]) -> None: ...
def forward_before(x: ForwardBefore[int]) -> None: ...
assert typing.get_args(typing.get_type_hints(forward_after, localns=locals())['x']) == (int, Forward)
assert typing.get_args(typing.get_type_hints(forward_before, localns=locals())['x']) == (int, Forward)
def test_or_type_operator_with_Protocol(self):
class Proto(typing.Protocol):
def meth(self) -> int:
...
assert Proto | str == typing.Union[Proto, str]
def test_or_type_operator_with_Alias(self):
assert list | str == typing.Union[list, str]
assert typing.List | str == typing.Union[typing.List, str]
def test_or_type_operator_with_NamedTuple(self):
NT=namedtuple('A', ['B', 'C', 'D'])
assert NT | str == typing.Union[NT,str]
def test_or_type_operator_with_TypedDict(self):
class Point2D(typing.TypedDict):
x: int
y: int
label: str
assert Point2D | str == typing.Union[Point2D, str]
def test_or_type_operator_with_NewType(self):
UserId = typing.NewType('UserId', int)
assert UserId | str == typing.Union[UserId, str]
def test_or_type_operator_with_IO(self):
assert typing.IO | str == typing.Union[typing.IO, str]
def test_or_type_operator_with_SpecialForm(self):
assert typing.Any | str == typing.Union[typing.Any, str]
assert typing.NoReturn | str == typing.Union[typing.NoReturn, str]
assert typing.Optional[int] | str == typing.Union[typing.Optional[int], str]
assert typing.Optional[int] | str == typing.Union[int, str, None]
assert typing.Union[int, bool] | str == typing.Union[int, bool, str]
def test_or_type_repr(self):
assert repr(int | None) == "int | None"
assert repr(int | typing.GenericAlias(list, int)) == "int | list[int]"
def test_or_type_operator_with_genericalias(self):
a = list[int]
b = list[str]
c = dict[float, str]
class SubClass(types.GenericAlias): ...
d = SubClass(list, float)
# equivalence with typing.Union
self.assertEqual(a | b | c | d, typing.Union[a, b, c, d])
# de-duplicate
self.assertEqual(a | c | b | b | a | c | d | d, a | b | c | d)
# order shouldn't matter
self.assertEqual(a | b | d, b | a | d)
self.assertEqual(repr(a | b | c | d),
"list[int] | list[str] | dict[float, str] | list[float]")
class BadType(type):
def __eq__(self, other):
return 1 / 0
bt = BadType('bt', (), {})
# Comparison should fail and errors should propagate out for bad types.
with self.assertRaises(ZeroDivisionError):
list[int] | list[bt]
def test_ellipsis_type(self):
self.assertIsInstance(Ellipsis, types.EllipsisType)
def test_notimplemented_type(self):
self.assertIsInstance(NotImplemented, types.NotImplementedType)
def test_none_type(self):
self.assertIsInstance(None, types.NoneType)
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__',
'__class_getitem__',
'__ior__',
'__iter__',
'__len__',
'__or__',
'__reversed__',
'__ror__',
'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_reversed(self):
d = {'a': 1, 'b': 2, 'foo': 0, 'c': 3, 'd': 4}
mp = self.mappingproxy(d)
del d['foo']
r = reversed(mp)
self.assertEqual(list(r), list('dcba'))
self.assertRaises(StopIteration, next, r)
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)
def test_union(self):
mapping = {'a': 0, 'b': 1, 'c': 2}
view = self.mappingproxy(mapping)
with self.assertRaises(TypeError):
view | [('r', 2), ('d', 2)]
with self.assertRaises(TypeError):
[('r', 2), ('d', 2)] | view
with self.assertRaises(TypeError):
view |= [('r', 2), ('d', 2)]
other = {'c': 3, 'p': 0}
self.assertDictEqual(view | other, {'a': 0, 'b': 1, 'c': 3, 'p': 0})
self.assertDictEqual(other | view, {'c': 2, 'p': 0, 'a': 0, 'b': 1})
self.assertEqual(view, {'a': 0, 'b': 1, 'c': 2})
self.assertDictEqual(mapping, {'a': 0, 'b': 1, 'c': 2})
self.assertDictEqual(other, {'c': 3, 'p': 0})
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: