| import sys |
| |
| import unittest |
| from test import test_support |
| from test.test_support import run_unittest, have_unicode |
| import math |
| |
| L = [ |
| ('0', 0), |
| ('1', 1), |
| ('9', 9), |
| ('10', 10), |
| ('99', 99), |
| ('100', 100), |
| ('314', 314), |
| (' 314', 314), |
| ('314 ', 314), |
| (' \t\t 314 \t\t ', 314), |
| (repr(sys.maxint), sys.maxint), |
| (' 1x', ValueError), |
| (' 1 ', 1), |
| (' 1\02 ', ValueError), |
| ('', ValueError), |
| (' ', ValueError), |
| (' \t\t ', ValueError) |
| ] |
| if have_unicode: |
| L += [ |
| (unicode('0'), 0), |
| (unicode('1'), 1), |
| (unicode('9'), 9), |
| (unicode('10'), 10), |
| (unicode('99'), 99), |
| (unicode('100'), 100), |
| (unicode('314'), 314), |
| (unicode(' 314'), 314), |
| (unicode('\u0663\u0661\u0664 ','raw-unicode-escape'), 314), |
| (unicode(' \t\t 314 \t\t '), 314), |
| (unicode(' 1x'), ValueError), |
| (unicode(' 1 '), 1), |
| (unicode(' 1\02 '), ValueError), |
| (unicode(''), ValueError), |
| (unicode(' '), ValueError), |
| (unicode(' \t\t '), ValueError), |
| (unichr(0x200), ValueError), |
| ] |
| |
| class IntLongCommonTests(object): |
| |
| """Mixin of test cases to share between both test_int and test_long.""" |
| |
| # Change to int or long in the TestCase subclass. |
| ntype = None |
| |
| def test_no_args(self): |
| self.assertEqual(self.ntype(), 0) |
| |
| def test_keyword_args(self): |
| # Test invoking constructor using keyword arguments. |
| self.assertEqual(self.ntype(x=1.2), 1) |
| self.assertEqual(self.ntype('100', base=2), 4) |
| self.assertEqual(self.ntype(x='100', base=2), 4) |
| self.assertRaises(TypeError, self.ntype, base=10) |
| self.assertRaises(TypeError, self.ntype, base=0) |
| |
| class IntTestCases(IntLongCommonTests, unittest.TestCase): |
| |
| ntype = int |
| |
| def test_basic(self): |
| self.assertEqual(int(314), 314) |
| self.assertEqual(int(3.14), 3) |
| self.assertEqual(int(314L), 314) |
| # Check that conversion from float truncates towards zero |
| self.assertEqual(int(-3.14), -3) |
| self.assertEqual(int(3.9), 3) |
| self.assertEqual(int(-3.9), -3) |
| self.assertEqual(int(3.5), 3) |
| self.assertEqual(int(-3.5), -3) |
| # Different base: |
| self.assertEqual(int("10",16), 16L) |
| if have_unicode: |
| self.assertEqual(int(unicode("10"),16), 16L) |
| # Test conversion from strings and various anomalies |
| for s, v in L: |
| for sign in "", "+", "-": |
| for prefix in "", " ", "\t", " \t\t ": |
| ss = prefix + sign + s |
| vv = v |
| if sign == "-" and v is not ValueError: |
| vv = -v |
| try: |
| self.assertEqual(int(ss), vv) |
| except v: |
| pass |
| |
| s = repr(-1-sys.maxint) |
| x = int(s) |
| self.assertEqual(x+1, -sys.maxint) |
| self.assertIsInstance(x, int) |
| # should return long |
| self.assertEqual(int(s[1:]), sys.maxint+1) |
| |
| # should return long |
| x = int(1e100) |
| self.assertIsInstance(x, long) |
| x = int(-1e100) |
| self.assertIsInstance(x, long) |
| |
| |
| # SF bug 434186: 0x80000000/2 != 0x80000000>>1. |
| # Worked by accident in Windows release build, but failed in debug build. |
| # Failed in all Linux builds. |
| x = -1-sys.maxint |
| self.assertEqual(x >> 1, x//2) |
| |
| self.assertRaises(ValueError, int, '123\0') |
| self.assertRaises(ValueError, int, '53', 40) |
| |
| # SF bug 1545497: embedded NULs were not detected with |
| # explicit base |
| self.assertRaises(ValueError, int, '123\0', 10) |
| self.assertRaises(ValueError, int, '123\x00 245', 20) |
| |
| x = int('1' * 600) |
| self.assertIsInstance(x, long) |
| |
| if have_unicode: |
| x = int(unichr(0x661) * 600) |
| self.assertIsInstance(x, long) |
| |
| self.assertRaises(TypeError, int, 1, 12) |
| |
| self.assertEqual(int('0123', 0), 83) |
| self.assertEqual(int('0x123', 16), 291) |
| |
| # Bug 1679: "0x" is not a valid hex literal |
| self.assertRaises(ValueError, int, "0x", 16) |
| self.assertRaises(ValueError, int, "0x", 0) |
| |
| self.assertRaises(ValueError, int, "0o", 8) |
| self.assertRaises(ValueError, int, "0o", 0) |
| |
| self.assertRaises(ValueError, int, "0b", 2) |
| self.assertRaises(ValueError, int, "0b", 0) |
| |
| |
| # SF bug 1334662: int(string, base) wrong answers |
| # Various representations of 2**32 evaluated to 0 |
| # rather than 2**32 in previous versions |
| |
| self.assertEqual(int('100000000000000000000000000000000', 2), 4294967296L) |
| self.assertEqual(int('102002022201221111211', 3), 4294967296L) |
| self.assertEqual(int('10000000000000000', 4), 4294967296L) |
| self.assertEqual(int('32244002423141', 5), 4294967296L) |
| self.assertEqual(int('1550104015504', 6), 4294967296L) |
| self.assertEqual(int('211301422354', 7), 4294967296L) |
| self.assertEqual(int('40000000000', 8), 4294967296L) |
| self.assertEqual(int('12068657454', 9), 4294967296L) |
| self.assertEqual(int('4294967296', 10), 4294967296L) |
| self.assertEqual(int('1904440554', 11), 4294967296L) |
| self.assertEqual(int('9ba461594', 12), 4294967296L) |
| self.assertEqual(int('535a79889', 13), 4294967296L) |
| self.assertEqual(int('2ca5b7464', 14), 4294967296L) |
| self.assertEqual(int('1a20dcd81', 15), 4294967296L) |
| self.assertEqual(int('100000000', 16), 4294967296L) |
| self.assertEqual(int('a7ffda91', 17), 4294967296L) |
| self.assertEqual(int('704he7g4', 18), 4294967296L) |
| self.assertEqual(int('4f5aff66', 19), 4294967296L) |
| self.assertEqual(int('3723ai4g', 20), 4294967296L) |
| self.assertEqual(int('281d55i4', 21), 4294967296L) |
| self.assertEqual(int('1fj8b184', 22), 4294967296L) |
| self.assertEqual(int('1606k7ic', 23), 4294967296L) |
| self.assertEqual(int('mb994ag', 24), 4294967296L) |
| self.assertEqual(int('hek2mgl', 25), 4294967296L) |
| self.assertEqual(int('dnchbnm', 26), 4294967296L) |
| self.assertEqual(int('b28jpdm', 27), 4294967296L) |
| self.assertEqual(int('8pfgih4', 28), 4294967296L) |
| self.assertEqual(int('76beigg', 29), 4294967296L) |
| self.assertEqual(int('5qmcpqg', 30), 4294967296L) |
| self.assertEqual(int('4q0jto4', 31), 4294967296L) |
| self.assertEqual(int('4000000', 32), 4294967296L) |
| self.assertEqual(int('3aokq94', 33), 4294967296L) |
| self.assertEqual(int('2qhxjli', 34), 4294967296L) |
| self.assertEqual(int('2br45qb', 35), 4294967296L) |
| self.assertEqual(int('1z141z4', 36), 4294967296L) |
| |
| # tests with base 0 |
| # this fails on 3.0, but in 2.x the old octal syntax is allowed |
| self.assertEqual(int(' 0123 ', 0), 83) |
| self.assertEqual(int(' 0123 ', 0), 83) |
| self.assertEqual(int('000', 0), 0) |
| self.assertEqual(int('0o123', 0), 83) |
| self.assertEqual(int('0x123', 0), 291) |
| self.assertEqual(int('0b100', 0), 4) |
| self.assertEqual(int(' 0O123 ', 0), 83) |
| self.assertEqual(int(' 0X123 ', 0), 291) |
| self.assertEqual(int(' 0B100 ', 0), 4) |
| self.assertEqual(int('0', 0), 0) |
| self.assertEqual(int('+0', 0), 0) |
| self.assertEqual(int('-0', 0), 0) |
| self.assertEqual(int('00', 0), 0) |
| self.assertRaises(ValueError, int, '08', 0) |
| self.assertRaises(ValueError, int, '-012395', 0) |
| |
| # without base still base 10 |
| self.assertEqual(int('0123'), 123) |
| self.assertEqual(int('0123', 10), 123) |
| |
| # tests with prefix and base != 0 |
| self.assertEqual(int('0x123', 16), 291) |
| self.assertEqual(int('0o123', 8), 83) |
| self.assertEqual(int('0b100', 2), 4) |
| self.assertEqual(int('0X123', 16), 291) |
| self.assertEqual(int('0O123', 8), 83) |
| self.assertEqual(int('0B100', 2), 4) |
| |
| # the code has special checks for the first character after the |
| # type prefix |
| self.assertRaises(ValueError, int, '0b2', 2) |
| self.assertRaises(ValueError, int, '0b02', 2) |
| self.assertRaises(ValueError, int, '0B2', 2) |
| self.assertRaises(ValueError, int, '0B02', 2) |
| self.assertRaises(ValueError, int, '0o8', 8) |
| self.assertRaises(ValueError, int, '0o08', 8) |
| self.assertRaises(ValueError, int, '0O8', 8) |
| self.assertRaises(ValueError, int, '0O08', 8) |
| self.assertRaises(ValueError, int, '0xg', 16) |
| self.assertRaises(ValueError, int, '0x0g', 16) |
| self.assertRaises(ValueError, int, '0Xg', 16) |
| self.assertRaises(ValueError, int, '0X0g', 16) |
| |
| # SF bug 1334662: int(string, base) wrong answers |
| # Checks for proper evaluation of 2**32 + 1 |
| self.assertEqual(int('100000000000000000000000000000001', 2), 4294967297L) |
| self.assertEqual(int('102002022201221111212', 3), 4294967297L) |
| self.assertEqual(int('10000000000000001', 4), 4294967297L) |
| self.assertEqual(int('32244002423142', 5), 4294967297L) |
| self.assertEqual(int('1550104015505', 6), 4294967297L) |
| self.assertEqual(int('211301422355', 7), 4294967297L) |
| self.assertEqual(int('40000000001', 8), 4294967297L) |
| self.assertEqual(int('12068657455', 9), 4294967297L) |
| self.assertEqual(int('4294967297', 10), 4294967297L) |
| self.assertEqual(int('1904440555', 11), 4294967297L) |
| self.assertEqual(int('9ba461595', 12), 4294967297L) |
| self.assertEqual(int('535a7988a', 13), 4294967297L) |
| self.assertEqual(int('2ca5b7465', 14), 4294967297L) |
| self.assertEqual(int('1a20dcd82', 15), 4294967297L) |
| self.assertEqual(int('100000001', 16), 4294967297L) |
| self.assertEqual(int('a7ffda92', 17), 4294967297L) |
| self.assertEqual(int('704he7g5', 18), 4294967297L) |
| self.assertEqual(int('4f5aff67', 19), 4294967297L) |
| self.assertEqual(int('3723ai4h', 20), 4294967297L) |
| self.assertEqual(int('281d55i5', 21), 4294967297L) |
| self.assertEqual(int('1fj8b185', 22), 4294967297L) |
| self.assertEqual(int('1606k7id', 23), 4294967297L) |
| self.assertEqual(int('mb994ah', 24), 4294967297L) |
| self.assertEqual(int('hek2mgm', 25), 4294967297L) |
| self.assertEqual(int('dnchbnn', 26), 4294967297L) |
| self.assertEqual(int('b28jpdn', 27), 4294967297L) |
| self.assertEqual(int('8pfgih5', 28), 4294967297L) |
| self.assertEqual(int('76beigh', 29), 4294967297L) |
| self.assertEqual(int('5qmcpqh', 30), 4294967297L) |
| self.assertEqual(int('4q0jto5', 31), 4294967297L) |
| self.assertEqual(int('4000001', 32), 4294967297L) |
| self.assertEqual(int('3aokq95', 33), 4294967297L) |
| self.assertEqual(int('2qhxjlj', 34), 4294967297L) |
| self.assertEqual(int('2br45qc', 35), 4294967297L) |
| self.assertEqual(int('1z141z5', 36), 4294967297L) |
| |
| def test_bit_length(self): |
| tiny = 1e-10 |
| for x in xrange(-65000, 65000): |
| k = x.bit_length() |
| # Check equivalence with Python version |
| self.assertEqual(k, len(bin(x).lstrip('-0b'))) |
| # Behaviour as specified in the docs |
| if x != 0: |
| self.assertTrue(2**(k-1) <= abs(x) < 2**k) |
| else: |
| self.assertEqual(k, 0) |
| # Alternative definition: x.bit_length() == 1 + floor(log_2(x)) |
| if x != 0: |
| # When x is an exact power of 2, numeric errors can |
| # cause floor(log(x)/log(2)) to be one too small; for |
| # small x this can be fixed by adding a small quantity |
| # to the quotient before taking the floor. |
| self.assertEqual(k, 1 + math.floor( |
| math.log(abs(x))/math.log(2) + tiny)) |
| |
| self.assertEqual((0).bit_length(), 0) |
| self.assertEqual((1).bit_length(), 1) |
| self.assertEqual((-1).bit_length(), 1) |
| self.assertEqual((2).bit_length(), 2) |
| self.assertEqual((-2).bit_length(), 2) |
| for i in [2, 3, 15, 16, 17, 31, 32, 33, 63, 64]: |
| a = 2**i |
| self.assertEqual((a-1).bit_length(), i) |
| self.assertEqual((1-a).bit_length(), i) |
| self.assertEqual((a).bit_length(), i+1) |
| self.assertEqual((-a).bit_length(), i+1) |
| self.assertEqual((a+1).bit_length(), i+1) |
| self.assertEqual((-a-1).bit_length(), i+1) |
| |
| @unittest.skipUnless(float.__getformat__("double").startswith("IEEE"), |
| "test requires IEEE 754 doubles") |
| def test_float_conversion(self): |
| # values exactly representable as floats |
| exact_values = [-2, -1, 0, 1, 2, 2**52, 2**53-1, 2**53, 2**53+2, |
| 2**53+4, 2**54-4, 2**54-2, 2**63, -2**63, 2**64, |
| -2**64, 10**20, 10**21, 10**22] |
| for value in exact_values: |
| self.assertEqual(int(float(int(value))), value) |
| |
| # test round-half-to-even |
| self.assertEqual(int(float(2**53+1)), 2**53) |
| self.assertEqual(int(float(2**53+2)), 2**53+2) |
| self.assertEqual(int(float(2**53+3)), 2**53+4) |
| self.assertEqual(int(float(2**53+5)), 2**53+4) |
| self.assertEqual(int(float(2**53+6)), 2**53+6) |
| self.assertEqual(int(float(2**53+7)), 2**53+8) |
| |
| self.assertEqual(int(float(-2**53-1)), -2**53) |
| self.assertEqual(int(float(-2**53-2)), -2**53-2) |
| self.assertEqual(int(float(-2**53-3)), -2**53-4) |
| self.assertEqual(int(float(-2**53-5)), -2**53-4) |
| self.assertEqual(int(float(-2**53-6)), -2**53-6) |
| self.assertEqual(int(float(-2**53-7)), -2**53-8) |
| |
| self.assertEqual(int(float(2**54-2)), 2**54-2) |
| self.assertEqual(int(float(2**54-1)), 2**54) |
| self.assertEqual(int(float(2**54+2)), 2**54) |
| self.assertEqual(int(float(2**54+3)), 2**54+4) |
| self.assertEqual(int(float(2**54+5)), 2**54+4) |
| self.assertEqual(int(float(2**54+6)), 2**54+8) |
| self.assertEqual(int(float(2**54+10)), 2**54+8) |
| self.assertEqual(int(float(2**54+11)), 2**54+12) |
| |
| def test_valid_non_numeric_input_types_for_x(self): |
| # Test possible valid non-numeric types for x, including subclasses |
| # of the allowed built-in types. |
| class CustomStr(str): pass |
| values = ['100', CustomStr('100')] |
| |
| if have_unicode: |
| class CustomUnicode(unicode): pass |
| values += [unicode('100'), CustomUnicode(unicode('100'))] |
| |
| for x in values: |
| msg = 'x has value %s and type %s' % (x, type(x).__name__) |
| try: |
| self.assertEqual(int(x), 100, msg=msg) |
| self.assertEqual(int(x, 2), 4, msg=msg) |
| except TypeError, err: |
| raise AssertionError('For %s got TypeError: %s' % |
| (type(x).__name__, err)) |
| |
| def test_error_on_string_float_for_x(self): |
| self.assertRaises(ValueError, int, '1.2') |
| |
| def test_error_on_bytearray_for_x(self): |
| self.assertRaises(TypeError, int, bytearray('100'), 2) |
| |
| def test_error_on_invalid_int_bases(self): |
| for base in [-1, 1, 1000]: |
| self.assertRaises(ValueError, int, '100', base) |
| |
| def test_error_on_string_base(self): |
| self.assertRaises(TypeError, int, 100, base='foo') |
| |
| @test_support.cpython_only |
| def test_small_ints(self): |
| self.assertIs(int('10'), 10) |
| self.assertIs(int('-1'), -1) |
| if have_unicode: |
| self.assertIs(int(u'10'), 10) |
| self.assertIs(int(u'-1'), -1) |
| |
| def test_intconversion(self): |
| # Test __int__() |
| class ClassicMissingMethods: |
| pass |
| self.assertRaises(AttributeError, int, ClassicMissingMethods()) |
| |
| class MissingMethods(object): |
| pass |
| self.assertRaises(TypeError, int, MissingMethods()) |
| |
| class Foo0: |
| def __int__(self): |
| return 42 |
| |
| class Foo1(object): |
| def __int__(self): |
| return 42 |
| |
| class Foo2(int): |
| def __int__(self): |
| return 42 |
| |
| class Foo3(int): |
| def __int__(self): |
| return self |
| |
| class Foo4(int): |
| def __int__(self): |
| return 42L |
| |
| class Foo5(int): |
| def __int__(self): |
| return 42. |
| |
| self.assertEqual(int(Foo0()), 42) |
| self.assertEqual(int(Foo1()), 42) |
| self.assertEqual(int(Foo2()), 42) |
| self.assertEqual(int(Foo3()), 0) |
| self.assertEqual(int(Foo4()), 42L) |
| self.assertRaises(TypeError, int, Foo5()) |
| |
| class Classic: |
| pass |
| for base in (object, Classic): |
| class IntOverridesTrunc(base): |
| def __int__(self): |
| return 42 |
| def __trunc__(self): |
| return -12 |
| self.assertEqual(int(IntOverridesTrunc()), 42) |
| |
| class JustTrunc(base): |
| def __trunc__(self): |
| return 42 |
| self.assertEqual(int(JustTrunc()), 42) |
| |
| for trunc_result_base in (object, Classic): |
| class Integral(trunc_result_base): |
| def __int__(self): |
| return 42 |
| |
| class TruncReturnsNonInt(base): |
| def __trunc__(self): |
| return Integral() |
| self.assertEqual(int(TruncReturnsNonInt()), 42) |
| |
| class NonIntegral(trunc_result_base): |
| def __trunc__(self): |
| # Check that we avoid infinite recursion. |
| return NonIntegral() |
| |
| class TruncReturnsNonIntegral(base): |
| def __trunc__(self): |
| return NonIntegral() |
| try: |
| int(TruncReturnsNonIntegral()) |
| except TypeError as e: |
| self.assertEqual(str(e), |
| "__trunc__ returned non-Integral" |
| " (type NonIntegral)") |
| else: |
| self.fail("Failed to raise TypeError with %s" % |
| ((base, trunc_result_base),)) |
| |
| def test_main(): |
| run_unittest(IntTestCases) |
| |
| if __name__ == "__main__": |
| test_main() |
