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| author | Mark Dickinson <mdickinson@enthought.com> | 2017-02-20 20:28:15 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-02-20 20:28:15 (GMT) |
| commit | 112ec38c15b388fe025ccb85369a584d218b1160 (patch) | |
| tree | 411b56a68f3900436949eb6ce1a49a8f6c035826 /Lib/test/test_complex.py | |
| parent | 1b8df107f867fb05ff39ebee7c55f0a907e7ad5f (diff) | |
| download | cpython-112ec38c15b388fe025ccb85369a584d218b1160.zip cpython-112ec38c15b388fe025ccb85369a584d218b1160.tar.gz cpython-112ec38c15b388fe025ccb85369a584d218b1160.tar.bz2 | |
bpo-29602: fix signed zero handling in complex constructor. (#203)
* Fix incorrect handling of signed zeros for complex-related classes.
* Add Misc/NEWS entry.
Diffstat (limited to 'Lib/test/test_complex.py')
| -rw-r--r-- | Lib/test/test_complex.py | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py index c249ca7..cee4934 100644 --- a/Lib/test/test_complex.py +++ b/Lib/test/test_complex.py @@ -387,6 +387,29 @@ class ComplexTest(unittest.TestCase): self.assertAlmostEqual(complex(complex1(1j)), 2j) self.assertRaises(TypeError, complex, complex2(1j)) + @support.requires_IEEE_754 + def test_constructor_special_numbers(self): + class complex2(complex): + pass + for x in 0.0, -0.0, INF, -INF, NAN: + for y in 0.0, -0.0, INF, -INF, NAN: + with self.subTest(x=x, y=y): + z = complex(x, y) + self.assertFloatsAreIdentical(z.real, x) + self.assertFloatsAreIdentical(z.imag, y) + z = complex2(x, y) + self.assertIs(type(z), complex2) + self.assertFloatsAreIdentical(z.real, x) + self.assertFloatsAreIdentical(z.imag, y) + z = complex(complex2(x, y)) + self.assertIs(type(z), complex) + self.assertFloatsAreIdentical(z.real, x) + self.assertFloatsAreIdentical(z.imag, y) + z = complex2(complex(x, y)) + self.assertIs(type(z), complex2) + self.assertFloatsAreIdentical(z.real, x) + self.assertFloatsAreIdentical(z.imag, y) + def test_underscores(self): # check underscores for lit in VALID_UNDERSCORE_LITERALS: |