mirror of https://github.com/python/cpython
gh-109218: Refactor tests for the complex() constructor (GH-119635)
* Share common classes. * Use exactly representable floats and exact tests. * Check the sign of zero components. * Remove duplicated tests (mostly left after merging int and long). * Reorder tests in more consistent way. * Test more error messages. * Add tests for missed cases.
This commit is contained in:
Serhiy Storchaka
GitHub
parent
e875c2d752
commit
bf098d4157
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@ -5,7 +5,7 @@ from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
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INVALID_UNDERSCORE_LITERALS)
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from random import random
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from math import atan2, isnan, copysign
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from math import isnan, copysign
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import operator
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INF = float("inf")
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@ -21,6 +21,27 @@ ZERO_DIVISION = (
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(1, 0+0j),
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)
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class WithIndex:
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def __init__(self, value):
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self.value = value
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def __index__(self):
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return self.value
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class WithFloat:
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def __init__(self, value):
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self.value = value
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def __float__(self):
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return self.value
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class ComplexSubclass(complex):
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pass
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class WithComplex:
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def __init__(self, value):
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self.value = value
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def __complex__(self):
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return self.value
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class ComplexTest(unittest.TestCase):
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def assertAlmostEqual(self, a, b):
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@ -340,137 +361,90 @@ class ComplexTest(unittest.TestCase):
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self.assertClose(complex(5.3, 9.8).conjugate(), 5.3-9.8j)
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def test_constructor(self):
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class NS:
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def __init__(self, value): self.value = value
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def __complex__(self): return self.value
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self.assertEqual(complex(NS(1+10j)), 1+10j)
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self.assertRaises(TypeError, complex, NS(None))
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self.assertRaises(TypeError, complex, {})
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self.assertRaises(TypeError, complex, NS(1.5))
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self.assertRaises(TypeError, complex, NS(1))
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self.assertRaises(TypeError, complex, object())
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self.assertRaises(TypeError, complex, NS(4.25+0.5j), object())
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def check(z, x, y):
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self.assertIs(type(z), complex)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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self.assertAlmostEqual(complex("1+10j"), 1+10j)
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self.assertAlmostEqual(complex(10), 10+0j)
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self.assertAlmostEqual(complex(10.0), 10+0j)
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self.assertAlmostEqual(complex(10), 10+0j)
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self.assertAlmostEqual(complex(10+0j), 10+0j)
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self.assertAlmostEqual(complex(1,10), 1+10j)
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self.assertAlmostEqual(complex(1,10), 1+10j)
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self.assertAlmostEqual(complex(1,10.0), 1+10j)
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self.assertAlmostEqual(complex(1,10), 1+10j)
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self.assertAlmostEqual(complex(1,10), 1+10j)
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self.assertAlmostEqual(complex(1,10.0), 1+10j)
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self.assertAlmostEqual(complex(1.0,10), 1+10j)
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self.assertAlmostEqual(complex(1.0,10), 1+10j)
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self.assertAlmostEqual(complex(1.0,10.0), 1+10j)
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self.assertAlmostEqual(complex(3.14+0j), 3.14+0j)
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self.assertAlmostEqual(complex(3.14), 3.14+0j)
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self.assertAlmostEqual(complex(314), 314.0+0j)
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self.assertAlmostEqual(complex(314), 314.0+0j)
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self.assertAlmostEqual(complex(3.14+0j, 0j), 3.14+0j)
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self.assertAlmostEqual(complex(3.14, 0.0), 3.14+0j)
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self.assertAlmostEqual(complex(314, 0), 314.0+0j)
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self.assertAlmostEqual(complex(314, 0), 314.0+0j)
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self.assertAlmostEqual(complex(0j, 3.14j), -3.14+0j)
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self.assertAlmostEqual(complex(0.0, 3.14j), -3.14+0j)
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self.assertAlmostEqual(complex(0j, 3.14), 3.14j)
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self.assertAlmostEqual(complex(0.0, 3.14), 3.14j)
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self.assertAlmostEqual(complex("1"), 1+0j)
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self.assertAlmostEqual(complex("1j"), 1j)
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self.assertAlmostEqual(complex(), 0)
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self.assertAlmostEqual(complex("-1"), -1)
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self.assertAlmostEqual(complex("+1"), +1)
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self.assertAlmostEqual(complex("(1+2j)"), 1+2j)
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self.assertAlmostEqual(complex("(1.3+2.2j)"), 1.3+2.2j)
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self.assertAlmostEqual(complex("3.14+1J"), 3.14+1j)
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self.assertAlmostEqual(complex(" ( +3.14-6J )"), 3.14-6j)
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self.assertAlmostEqual(complex(" ( +3.14-J )"), 3.14-1j)
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self.assertAlmostEqual(complex(" ( +3.14+j )"), 3.14+1j)
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self.assertAlmostEqual(complex("J"), 1j)
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self.assertAlmostEqual(complex("( j )"), 1j)
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self.assertAlmostEqual(complex("+J"), 1j)
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self.assertAlmostEqual(complex("( -j)"), -1j)
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self.assertAlmostEqual(complex('1e-500'), 0.0 + 0.0j)
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self.assertAlmostEqual(complex('-1e-500j'), 0.0 - 0.0j)
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self.assertAlmostEqual(complex('-1e-500+1e-500j'), -0.0 + 0.0j)
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self.assertEqual(complex('1-1j'), 1.0 - 1j)
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self.assertEqual(complex('1J'), 1j)
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check(complex(), 0.0, 0.0)
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check(complex(10), 10.0, 0.0)
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check(complex(4.25), 4.25, 0.0)
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check(complex(4.25+0j), 4.25, 0.0)
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check(complex(4.25+0.5j), 4.25, 0.5)
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check(complex(ComplexSubclass(4.25+0.5j)), 4.25, 0.5)
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check(complex(WithComplex(4.25+0.5j)), 4.25, 0.5)
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class complex2(complex): pass
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self.assertAlmostEqual(complex(complex2(1+1j)), 1+1j)
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self.assertAlmostEqual(complex(real=17, imag=23), 17+23j)
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self.assertAlmostEqual(complex(real=17+23j), 17+23j)
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self.assertAlmostEqual(complex(real=17+23j, imag=23), 17+46j)
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self.assertAlmostEqual(complex(real=1+2j, imag=3+4j), -3+5j)
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check(complex(1, 10), 1.0, 10.0)
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check(complex(1, 10.0), 1.0, 10.0)
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check(complex(1, 4.25), 1.0, 4.25)
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check(complex(1.0, 10), 1.0, 10.0)
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check(complex(4.25, 10), 4.25, 10.0)
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check(complex(1.0, 10.0), 1.0, 10.0)
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check(complex(4.25, 0.5), 4.25, 0.5)
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check(complex(4.25+0j, 0), 4.25, 0.0)
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check(complex(ComplexSubclass(4.25+0j), 0), 4.25, 0.0)
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check(complex(WithComplex(4.25+0j), 0), 4.25, 0.0)
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check(complex(4.25j, 0), 0.0, 4.25)
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check(complex(0j, 4.25), 0.0, 4.25)
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check(complex(0, 4.25+0j), 0.0, 4.25)
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check(complex(0, ComplexSubclass(4.25+0j)), 0.0, 4.25)
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with self.assertRaisesRegex(TypeError,
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"second argument must be a number, not 'WithComplex'"):
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complex(0, WithComplex(4.25+0j))
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check(complex(0.0, 4.25j), -4.25, 0.0)
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check(complex(4.25+0j, 0j), 4.25, 0.0)
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check(complex(4.25j, 0j), 0.0, 4.25)
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check(complex(0j, 4.25+0j), 0.0, 4.25)
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check(complex(0j, 4.25j), -4.25, 0.0)
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check(complex(real=4.25), 4.25, 0.0)
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check(complex(real=4.25+0j), 4.25, 0.0)
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check(complex(real=4.25+1.5j), 4.25, 1.5)
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check(complex(imag=1.5), 0.0, 1.5)
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check(complex(real=4.25, imag=1.5), 4.25, 1.5)
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check(complex(4.25, imag=1.5), 4.25, 1.5)
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# check that the sign of a zero in the real or imaginary part
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# is preserved when constructing from two floats. (These checks
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# are harmless on systems without support for signed zeros.)
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def split_zeros(x):
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"""Function that produces different results for 0. and -0."""
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return atan2(x, -1.)
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# is preserved when constructing from two floats.
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for x in 1.0, -1.0:
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for y in 0.0, -0.0:
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check(complex(x, y), x, y)
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check(complex(y, x), y, x)
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self.assertEqual(split_zeros(complex(1., 0.).imag), split_zeros(0.))
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self.assertEqual(split_zeros(complex(1., -0.).imag), split_zeros(-0.))
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self.assertEqual(split_zeros(complex(0., 1.).real), split_zeros(0.))
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self.assertEqual(split_zeros(complex(-0., 1.).real), split_zeros(-0.))
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c = complex(4.25, 1.5)
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self.assertIs(complex(c), c)
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c2 = ComplexSubclass(c)
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self.assertEqual(c2, c)
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self.assertIs(type(c2), ComplexSubclass)
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del c, c2
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c = 3.14 + 1j
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self.assertTrue(complex(c) is c)
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del c
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self.assertRaises(TypeError, complex, "1", "1")
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self.assertRaises(TypeError, complex, 1, "1")
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# SF bug 543840: complex(string) accepts strings with \0
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# Fixed in 2.3.
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self.assertRaises(ValueError, complex, '1+1j\0j')
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self.assertRaises(TypeError, int, 5+3j)
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self.assertRaises(TypeError, int, 5+3j)
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self.assertRaises(TypeError, float, 5+3j)
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self.assertRaises(ValueError, complex, "")
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self.assertRaises(TypeError, complex, None)
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self.assertRaisesRegex(TypeError, "not 'NoneType'", complex, None)
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self.assertRaises(ValueError, complex, "\0")
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self.assertRaises(ValueError, complex, "3\09")
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self.assertRaises(TypeError, complex, "1", "2")
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self.assertRaises(TypeError, complex, "1", 42)
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self.assertRaises(TypeError, complex, 1, "2")
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self.assertRaises(ValueError, complex, "1+")
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self.assertRaises(ValueError, complex, "1+1j+1j")
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self.assertRaises(ValueError, complex, "--")
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self.assertRaises(ValueError, complex, "(1+2j")
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self.assertRaises(ValueError, complex, "1+2j)")
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self.assertRaises(ValueError, complex, "1+(2j)")
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self.assertRaises(ValueError, complex, "(1+2j)123")
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self.assertRaises(ValueError, complex, "x")
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self.assertRaises(ValueError, complex, "1j+2")
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self.assertRaises(ValueError, complex, "1e1ej")
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self.assertRaises(ValueError, complex, "1e++1ej")
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self.assertRaises(ValueError, complex, ")1+2j(")
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self.assertRaisesRegex(
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TypeError,
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self.assertRaisesRegex(TypeError,
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"first argument must be a string or a number, not 'dict'",
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complex, {1:2}, 1)
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self.assertRaisesRegex(
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TypeError,
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complex, {})
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self.assertRaisesRegex(TypeError,
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"first argument must be a string or a number, not 'NoneType'",
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complex, None)
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self.assertRaisesRegex(TypeError,
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"first argument must be a string or a number, not 'dict'",
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complex, {1:2}, 0)
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self.assertRaisesRegex(TypeError,
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"can't take second arg if first is a string",
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complex, '1', 0)
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self.assertRaisesRegex(TypeError,
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"second argument must be a number, not 'dict'",
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complex, 1, {1:2})
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# the following three are accepted by Python 2.6
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self.assertRaises(ValueError, complex, "1..1j")
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self.assertRaises(ValueError, complex, "1.11.1j")
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self.assertRaises(ValueError, complex, "1e1.1j")
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complex, 0, {1:2})
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self.assertRaisesRegex(TypeError,
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"second arg can't be a string",
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complex, 0, '1')
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# check that complex accepts long unicode strings
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self.assertEqual(type(complex("1"*500)), complex)
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# check whitespace processing
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self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
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# Invalid unicode string
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# See bpo-34087
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self.assertRaises(ValueError, complex, '\u3053\u3093\u306b\u3061\u306f')
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self.assertRaises(TypeError, complex, WithComplex(1.5))
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self.assertRaises(TypeError, complex, WithComplex(1))
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self.assertRaises(TypeError, complex, WithComplex(None))
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self.assertRaises(TypeError, complex, WithComplex(4.25+0j), object())
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self.assertRaises(TypeError, complex, WithComplex(1.5), object())
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self.assertRaises(TypeError, complex, WithComplex(1), object())
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self.assertRaises(TypeError, complex, WithComplex(None), object())
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class EvilExc(Exception):
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pass
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@ -481,33 +455,33 @@ class ComplexTest(unittest.TestCase):
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self.assertRaises(EvilExc, complex, evilcomplex())
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class float2:
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def __init__(self, value):
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self.value = value
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def __float__(self):
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return self.value
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check(complex(WithFloat(4.25)), 4.25, 0.0)
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check(complex(WithFloat(4.25), 1.5), 4.25, 1.5)
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check(complex(1.5, WithFloat(4.25)), 1.5, 4.25)
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self.assertRaises(TypeError, complex, WithFloat(42))
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self.assertRaises(TypeError, complex, WithFloat(42), 1.5)
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self.assertRaises(TypeError, complex, 1.5, WithFloat(42))
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self.assertRaises(TypeError, complex, WithFloat(None))
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self.assertRaises(TypeError, complex, WithFloat(None), 1.5)
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self.assertRaises(TypeError, complex, 1.5, WithFloat(None))
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self.assertAlmostEqual(complex(float2(42.)), 42)
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self.assertAlmostEqual(complex(real=float2(17.), imag=float2(23.)), 17+23j)
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self.assertRaises(TypeError, complex, float2(None))
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class MyIndex:
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def __init__(self, value):
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self.value = value
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def __index__(self):
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return self.value
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self.assertAlmostEqual(complex(MyIndex(42)), 42.0+0.0j)
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self.assertAlmostEqual(complex(123, MyIndex(42)), 123.0+42.0j)
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self.assertRaises(OverflowError, complex, MyIndex(2**2000))
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self.assertRaises(OverflowError, complex, 123, MyIndex(2**2000))
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check(complex(WithIndex(42)), 42.0, 0.0)
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check(complex(WithIndex(42), 1.5), 42.0, 1.5)
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check(complex(1.5, WithIndex(42)), 1.5, 42.0)
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self.assertRaises(OverflowError, complex, WithIndex(2**2000))
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self.assertRaises(OverflowError, complex, WithIndex(2**2000), 1.5)
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self.assertRaises(OverflowError, complex, 1.5, WithIndex(2**2000))
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self.assertRaises(TypeError, complex, WithIndex(None))
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self.assertRaises(TypeError, complex, WithIndex(None), 1.5)
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self.assertRaises(TypeError, complex, 1.5, WithIndex(None))
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class MyInt:
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def __int__(self):
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return 42
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self.assertRaises(TypeError, complex, MyInt())
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self.assertRaises(TypeError, complex, 123, MyInt())
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self.assertRaises(TypeError, complex, MyInt(), 1.5)
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self.assertRaises(TypeError, complex, 1.5, MyInt())
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class complex0(complex):
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"""Test usage of __complex__() when inheriting from 'complex'"""
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@ -527,9 +501,9 @@ class ComplexTest(unittest.TestCase):
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def __complex__(self):
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return None
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self.assertEqual(complex(complex0(1j)), 42j)
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check(complex(complex0(1j)), 0.0, 42.0)
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with self.assertWarns(DeprecationWarning):
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self.assertEqual(complex(complex1(1j)), 2j)
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check(complex(complex1(1j)), 0.0, 2.0)
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self.assertRaises(TypeError, complex, complex2(1j))
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def test___complex__(self):
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@ -537,36 +511,93 @@ class ComplexTest(unittest.TestCase):
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self.assertEqual(z.__complex__(), z)
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self.assertEqual(type(z.__complex__()), complex)
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class complex_subclass(complex):
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pass
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z = complex_subclass(3 + 4j)
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z = ComplexSubclass(3 + 4j)
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self.assertEqual(z.__complex__(), 3 + 4j)
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self.assertEqual(type(z.__complex__()), complex)
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@support.requires_IEEE_754
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def test_constructor_special_numbers(self):
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class complex2(complex):
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pass
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for x in 0.0, -0.0, INF, -INF, NAN:
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for y in 0.0, -0.0, INF, -INF, NAN:
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with self.subTest(x=x, y=y):
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z = complex(x, y)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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z = complex2(x, y)
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self.assertIs(type(z), complex2)
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z = ComplexSubclass(x, y)
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self.assertIs(type(z), ComplexSubclass)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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z = complex(complex2(x, y))
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z = complex(ComplexSubclass(x, y))
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self.assertIs(type(z), complex)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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z = complex2(complex(x, y))
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self.assertIs(type(z), complex2)
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z = ComplexSubclass(complex(x, y))
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self.assertIs(type(z), ComplexSubclass)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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def test_constructor_from_string(self):
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def check(z, x, y):
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self.assertIs(type(z), complex)
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self.assertFloatsAreIdentical(z.real, x)
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self.assertFloatsAreIdentical(z.imag, y)
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check(complex("1"), 1.0, 0.0)
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check(complex("1j"), 0.0, 1.0)
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check(complex("-1"), -1.0, 0.0)
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check(complex("+1"), 1.0, 0.0)
|
||||
check(complex("1+2j"), 1.0, 2.0)
|
||||
check(complex("(1+2j)"), 1.0, 2.0)
|
||||
check(complex("(1.5+4.25j)"), 1.5, 4.25)
|
||||
check(complex("4.25+1J"), 4.25, 1.0)
|
||||
check(complex(" ( +4.25-6J )"), 4.25, -6.0)
|
||||
check(complex(" ( +4.25-J )"), 4.25, -1.0)
|
||||
check(complex(" ( +4.25+j )"), 4.25, 1.0)
|
||||
check(complex("J"), 0.0, 1.0)
|
||||
check(complex("( j )"), 0.0, 1.0)
|
||||
check(complex("+J"), 0.0, 1.0)
|
||||
check(complex("( -j)"), 0.0, -1.0)
|
||||
check(complex('1-1j'), 1.0, -1.0)
|
||||
check(complex('1J'), 0.0, 1.0)
|
||||
|
||||
check(complex('1e-500'), 0.0, 0.0)
|
||||
check(complex('-1e-500j'), 0.0, -0.0)
|
||||
check(complex('1e-500+1e-500j'), 0.0, 0.0)
|
||||
check(complex('-1e-500+1e-500j'), -0.0, 0.0)
|
||||
check(complex('1e-500-1e-500j'), 0.0, -0.0)
|
||||
check(complex('-1e-500-1e-500j'), -0.0, -0.0)
|
||||
|
||||
# SF bug 543840: complex(string) accepts strings with \0
|
||||
# Fixed in 2.3.
|
||||
self.assertRaises(ValueError, complex, '1+1j\0j')
|
||||
self.assertRaises(ValueError, complex, "")
|
||||
self.assertRaises(ValueError, complex, "\0")
|
||||
self.assertRaises(ValueError, complex, "3\09")
|
||||
self.assertRaises(ValueError, complex, "1+")
|
||||
self.assertRaises(ValueError, complex, "1+1j+1j")
|
||||
self.assertRaises(ValueError, complex, "--")
|
||||
self.assertRaises(ValueError, complex, "(1+2j")
|
||||
self.assertRaises(ValueError, complex, "1+2j)")
|
||||
self.assertRaises(ValueError, complex, "1+(2j)")
|
||||
self.assertRaises(ValueError, complex, "(1+2j)123")
|
||||
self.assertRaises(ValueError, complex, "x")
|
||||
self.assertRaises(ValueError, complex, "1j+2")
|
||||
self.assertRaises(ValueError, complex, "1e1ej")
|
||||
self.assertRaises(ValueError, complex, "1e++1ej")
|
||||
self.assertRaises(ValueError, complex, ")1+2j(")
|
||||
# the following three are accepted by Python 2.6
|
||||
self.assertRaises(ValueError, complex, "1..1j")
|
||||
self.assertRaises(ValueError, complex, "1.11.1j")
|
||||
self.assertRaises(ValueError, complex, "1e1.1j")
|
||||
|
||||
# check that complex accepts long unicode strings
|
||||
self.assertIs(type(complex("1"*500)), complex)
|
||||
# check whitespace processing
|
||||
self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
|
||||
# Invalid unicode string
|
||||
# See bpo-34087
|
||||
self.assertRaises(ValueError, complex, '\u3053\u3093\u306b\u3061\u306f')
|
||||
|
||||
def test_constructor_negative_nans_from_string(self):
|
||||
self.assertEqual(copysign(1., complex("-nan").real), -1.)
|
||||
self.assertEqual(copysign(1., complex("-nanj").imag), -1.)
|
||||
|
|
@ -645,9 +676,6 @@ class ComplexTest(unittest.TestCase):
|
|||
test(complex(-0., -0.), "(-0-0j)")
|
||||
|
||||
def test_pos(self):
|
||||
class ComplexSubclass(complex):
|
||||
pass
|
||||
|
||||
self.assertEqual(+(1+6j), 1+6j)
|
||||
self.assertEqual(+ComplexSubclass(1, 6), 1+6j)
|
||||
self.assertIs(type(+ComplexSubclass(1, 6)), complex)
|
||||
|
|
@ -667,8 +695,8 @@ class ComplexTest(unittest.TestCase):
|
|||
def test_plus_minus_0j(self):
|
||||
# test that -0j and 0j literals are not identified
|
||||
z1, z2 = 0j, -0j
|
||||
self.assertEqual(atan2(z1.imag, -1.), atan2(0., -1.))
|
||||
self.assertEqual(atan2(z2.imag, -1.), atan2(-0., -1.))
|
||||
self.assertFloatsAreIdentical(z1.imag, 0.0)
|
||||
self.assertFloatsAreIdentical(z2.imag, -0.0)
|
||||
|
||||
@support.requires_IEEE_754
|
||||
def test_negated_imaginary_literal(self):
|
||||
|
|
|
|||
Loading…
Reference in New Issue