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Diffstat (limited to 'lib/python2.7/test/test_pow.py')
| -rw-r--r-- | lib/python2.7/test/test_pow.py | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/lib/python2.7/test/test_pow.py b/lib/python2.7/test/test_pow.py deleted file mode 100644 index 1ee67bc..0000000 --- a/lib/python2.7/test/test_pow.py +++ /dev/null @@ -1,129 +0,0 @@ -import test.test_support, unittest - -class PowTest(unittest.TestCase): - - def powtest(self, type): - if type != float: - for i in range(-1000, 1000): - self.assertEqual(pow(type(i), 0), 1) - self.assertEqual(pow(type(i), 1), type(i)) - self.assertEqual(pow(type(0), 1), type(0)) - self.assertEqual(pow(type(1), 1), type(1)) - - for i in range(-100, 100): - self.assertEqual(pow(type(i), 3), i*i*i) - - pow2 = 1 - for i in range(0,31): - self.assertEqual(pow(2, i), pow2) - if i != 30 : pow2 = pow2*2 - - for othertype in int, long: - for i in range(-10, 0) + range(1, 10): - ii = type(i) - for j in range(1, 11): - jj = -othertype(j) - pow(ii, jj) - - for othertype in int, long, float: - for i in range(1, 100): - zero = type(0) - exp = -othertype(i/10.0) - if exp == 0: - continue - self.assertRaises(ZeroDivisionError, pow, zero, exp) - - il, ih = -20, 20 - jl, jh = -5, 5 - kl, kh = -10, 10 - asseq = self.assertEqual - if type == float: - il = 1 - asseq = self.assertAlmostEqual - elif type == int: - jl = 0 - elif type == long: - jl, jh = 0, 15 - for i in range(il, ih+1): - for j in range(jl, jh+1): - for k in range(kl, kh+1): - if k != 0: - if type == float or j < 0: - self.assertRaises(TypeError, pow, type(i), j, k) - continue - asseq( - pow(type(i),j,k), - pow(type(i),j)% type(k) - ) - - def test_powint(self): - self.powtest(int) - - def test_powlong(self): - self.powtest(long) - - def test_powfloat(self): - self.powtest(float) - - def test_other(self): - # Other tests-- not very systematic - self.assertEqual(pow(3,3) % 8, pow(3,3,8)) - self.assertEqual(pow(3,3) % -8, pow(3,3,-8)) - self.assertEqual(pow(3,2) % -2, pow(3,2,-2)) - self.assertEqual(pow(-3,3) % 8, pow(-3,3,8)) - self.assertEqual(pow(-3,3) % -8, pow(-3,3,-8)) - self.assertEqual(pow(5,2) % -8, pow(5,2,-8)) - - self.assertEqual(pow(3L,3L) % 8, pow(3L,3L,8)) - self.assertEqual(pow(3L,3L) % -8, pow(3L,3L,-8)) - self.assertEqual(pow(3L,2) % -2, pow(3L,2,-2)) - self.assertEqual(pow(-3L,3L) % 8, pow(-3L,3L,8)) - self.assertEqual(pow(-3L,3L) % -8, pow(-3L,3L,-8)) - self.assertEqual(pow(5L,2) % -8, pow(5L,2,-8)) - - for i in range(-10, 11): - for j in range(0, 6): - for k in range(-7, 11): - if j >= 0 and k != 0: - self.assertEqual( - pow(i,j) % k, - pow(i,j,k) - ) - if j >= 0 and k != 0: - self.assertEqual( - pow(long(i),j) % k, - pow(long(i),j,k) - ) - - def test_bug643260(self): - class TestRpow: - def __rpow__(self, other): - return None - None ** TestRpow() # Won't fail when __rpow__ invoked. SF bug #643260. - - def test_bug705231(self): - # -1.0 raised to an integer should never blow up. It did if the - # platform pow() was buggy, and Python didn't worm around it. - eq = self.assertEqual - a = -1.0 - # The next two tests can still fail if the platform floor() - # function doesn't treat all large inputs as integers - # test_math should also fail if that is happening - eq(pow(a, 1.23e167), 1.0) - eq(pow(a, -1.23e167), 1.0) - for b in range(-10, 11): - eq(pow(a, float(b)), b & 1 and -1.0 or 1.0) - for n in range(0, 100): - fiveto = float(5 ** n) - # For small n, fiveto will be odd. Eventually we run out of - # mantissa bits, though, and thereafer fiveto will be even. - expected = fiveto % 2.0 and -1.0 or 1.0 - eq(pow(a, fiveto), expected) - eq(pow(a, -fiveto), expected) - eq(expected, 1.0) # else we didn't push fiveto to evenness - -def test_main(): - test.test_support.run_unittest(PowTest) - -if __name__ == "__main__": - test_main() |