import sys import unittest from test_grammar import (VALID_UNDERSCORE_LITERALS, INVALID_UNDERSCORE_LITERALS) 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.maxsize), sys.maxsize), (' 1x', ValueError), (' 1 ', 1), (' 1\02 ', ValueError), ('', ValueError), (' ', ValueError), (' \t\t ', ValueError), ("\u0200", ValueError) ] class IntSubclass(int): pass class IntTestCases(unittest.TestCase): def test_basic(self): self.assertEqual(int(314), 314) self.assertEqual(int(3.14), 3) # 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) self.assertEqual(int("-3"), -3) self.assertEqual(int(" -3 "), -3) self.assertEqual(int("0", base=2), 0) # self.assertEqual(int("\N{EM SPACE}-3\N{EN SPACE}"), -3) # Different base: self.assertEqual(int("10",16), 16) # 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 ValueError: pass s = repr(-1-sys.maxsize) # x = int(s) # self.assertEqual(x+1, -sys.maxsize) # self.assertIsInstance(x, int) # # should return int # self.assertEqual(int(s[1:]), sys.maxsize+1) # should return int x = int(1e100) # self.assertIsInstance(x, int) x = int(-1e100) # self.assertIsInstance(x, int) # 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.maxsize self.assertEqual(x >> 1, x//2) x = int('1' * 600) # self.assertIsInstance(x, int) self.assertRaises(TypeError, int, 1, 12) self.assertRaises(TypeError, lambda x: int(x, 2), 10) self.assertEqual(int('0o123', 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), 4294967296) self.assertEqual(int('102002022201221111211', 3), 4294967296) self.assertEqual(int('10000000000000000', 4), 4294967296) self.assertEqual(int('32244002423141', 5), 4294967296) self.assertEqual(int('1550104015504', 6), 4294967296) self.assertEqual(int('211301422354', 7), 4294967296) self.assertEqual(int('40000000000', 8), 4294967296) self.assertEqual(int('12068657454', 9), 4294967296) self.assertEqual(int('4294967296', 10), 4294967296) self.assertEqual(int('1904440554', 11), 4294967296) self.assertEqual(int('9ba461594', 12), 4294967296) self.assertEqual(int('535a79889', 13), 4294967296) self.assertEqual(int('2ca5b7464', 14), 4294967296) self.assertEqual(int('1a20dcd81', 15), 4294967296) self.assertEqual(int('100000000', 16), 4294967296) self.assertEqual(int('a7ffda91', 17), 4294967296) self.assertEqual(int('704he7g4', 18), 4294967296) self.assertEqual(int('4f5aff66', 19), 4294967296) self.assertEqual(int('3723ai4g', 20), 4294967296) self.assertEqual(int('281d55i4', 21), 4294967296) self.assertEqual(int('1fj8b184', 22), 4294967296) self.assertEqual(int('1606k7ic', 23), 4294967296) self.assertEqual(int('mb994ag', 24), 4294967296) self.assertEqual(int('hek2mgl', 25), 4294967296) self.assertEqual(int('dnchbnm', 26), 4294967296) self.assertEqual(int('b28jpdm', 27), 4294967296) self.assertEqual(int('8pfgih4', 28), 4294967296) self.assertEqual(int('76beigg', 29), 4294967296) self.assertEqual(int('5qmcpqg', 30), 4294967296) self.assertEqual(int('4q0jto4', 31), 4294967296) self.assertEqual(int('4000000', 32), 4294967296) self.assertEqual(int('3aokq94', 33), 4294967296) self.assertEqual(int('2qhxjli', 34), 4294967296) self.assertEqual(int('2br45qb', 35), 4294967296) self.assertEqual(int('1z141z4', 36), 4294967296) # tests with base 0 # this fails on 3.0, but in 2.x the old octal syntax is allowed self.assertEqual(int(' 0o123 ', 0), 83) self.assertEqual(int(' 0o123 ', 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) # 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), 4294967297) self.assertEqual(int('102002022201221111212', 3), 4294967297) self.assertEqual(int('10000000000000001', 4), 4294967297) self.assertEqual(int('32244002423142', 5), 4294967297) self.assertEqual(int('1550104015505', 6), 4294967297) self.assertEqual(int('211301422355', 7), 4294967297) self.assertEqual(int('40000000001', 8), 4294967297) self.assertEqual(int('12068657455', 9), 4294967297) self.assertEqual(int('4294967297', 10), 4294967297) self.assertEqual(int('1904440555', 11), 4294967297) self.assertEqual(int('9ba461595', 12), 4294967297) self.assertEqual(int('535a7988a', 13), 4294967297) self.assertEqual(int('2ca5b7465', 14), 4294967297) self.assertEqual(int('1a20dcd82', 15), 4294967297) self.assertEqual(int('100000001', 16), 4294967297) self.assertEqual(int('a7ffda92', 17), 4294967297) self.assertEqual(int('704he7g5', 18), 4294967297) self.assertEqual(int('4f5aff67', 19), 4294967297) self.assertEqual(int('3723ai4h', 20), 4294967297) self.assertEqual(int('281d55i5', 21), 4294967297) self.assertEqual(int('1fj8b185', 22), 4294967297) self.assertEqual(int('1606k7id', 23), 4294967297) self.assertEqual(int('mb994ah', 24), 4294967297) self.assertEqual(int('hek2mgm', 25), 4294967297) self.assertEqual(int('dnchbnn', 26), 4294967297) self.assertEqual(int('b28jpdn', 27), 4294967297) self.assertEqual(int('8pfgih5', 28), 4294967297) self.assertEqual(int('76beigh', 29), 4294967297) self.assertEqual(int('5qmcpqh', 30), 4294967297) self.assertEqual(int('4q0jto5', 31), 4294967297) self.assertEqual(int('4000001', 32), 4294967297) self.assertEqual(int('3aokq95', 33), 4294967297) self.assertEqual(int('2qhxjlj', 34), 4294967297) self.assertEqual(int('2br45qc', 35), 4294967297) self.assertEqual(int('1z141z5', 36), 4294967297) def test_underscores(self): for lit in VALID_UNDERSCORE_LITERALS: if any(ch in lit for ch in '.eEjJ'): continue self.assertEqual(int(lit, 0), int(lit.replace('_', ''), 0)) for lit in INVALID_UNDERSCORE_LITERALS: if lit in ('0_7', '09_99'): # octals are not recognized here continue if any(ch in lit for ch in '.eEjJ'): continue self.assertRaises(ValueError, int, lit, 0) # Additional test cases with bases != 0, only for the constructor: self.assertEqual(int("1_00", 3), 9) self.assertEqual(int("0_100"), 100) # not valid as a literal! # self.assertEqual(int(b"1_00"), 100) # byte underscore self.assertRaises(ValueError, int, "_100") self.assertRaises(ValueError, int, "+_100") self.assertRaises(ValueError, int, "1__00") self.assertRaises(ValueError, int, "100_") def test_small_ints(self): # Bug #3236: Return small longs from PyLong_FromString self.assertIs(int('10'), 10) self.assertIs(int('-1'), -1) def test_no_args(self): self.assertEqual(int(), 0) def test_keyword_args(self): # Test invoking int() using keyword arguments. # x = no longer supported in Python # self.assertEqual(int(x=1.2), 1) self.assertEqual(int('100', base=2), 4) # self.assertEqual(int(x='100', base=2), 4) self.assertRaises(TypeError, int, base=10) self.assertRaises(TypeError, int, base=0) def test_int_base_limits(self): """Testing the supported limits of the int() base parameter.""" self.assertEqual(int('0', 5), 0) self.assertRaises(ValueError, lambda: int('0', 1)) self.assertRaises(ValueError, lambda: int('0', 37)) self.assertRaises(ValueError, lambda: int('0', -909)) # An old magic value base from Python 2. self.assertRaises(ValueError, lambda: int('0', base=0-(2**234))) self.assertRaises(ValueError, lambda: int('0', base=2**234)) # Bases 2 through 36 are supported. for base in range(2,37): self.assertEqual(int('0', base=base), 0) def test_int_base_bad_types(self): """Not integer types are not valid bases; issue16772.""" self.assertRaises(TypeError, lambda: int('0', 5.5)) self.assertRaises(TypeError, lambda: int('0', 5.0)) def test_int_base_indexable(self): class MyIndexable(object): def __init__(self, value): self.value = value def __index__(self): return self.value # Check out of range bases. for base in 2**100, -2**100, 1, 37: self.assertRaises(ValueError, lambda: int('43', base)) # Check in-range bases. self.assertEqual(int('101', base=MyIndexable(2)), 5) self.assertEqual(int('101', base=MyIndexable(10)), 101) self.assertEqual(int('101', base=MyIndexable(36)), 1 + 36**2) # def test_non_numeric_input_types(self): # Test possible non-numeric types for the argument x, including # subclasses of the explicitly documented accepted types. # class CustomStr(str): pass # class CustomBytes(bytes): pass # class CustomByteArray(bytearray): pass # # factories = [ # bytes, # bytearray, # lambda b: CustomStr(b.decode()), # CustomBytes, # CustomByteArray, # memoryview, # ] # try: # from array import array # except ImportError: # pass # else: # factories.append(lambda b: array('B', b)) # for f in factories: # with self.subTest(type(x)): # self.assertEqual(int(x), 100) # if isinstance(x, (str, bytes, bytearray)): # self.assertEqual(int(x, 2), 4) # else: # msg = "can't convert non-string" # with self.assertRaisesRegex(TypeError, msg): # int(x, 2) # self.assertRaisesRegex(ValueError, 'invalid literal'): # int(f(b'A' * 0x10)) def test_string_float(self): self.assertRaises(ValueError, int, '1.2') def test_intconversion(self): # Test __int__() class ClassicMissingMethods: pass self.assertRaises(TypeError, int, ClassicMissingMethods()) class MissingMethods(object): pass self.assertRaises(TypeError, int, MissingMethods()) class Foo0: def __int__(self): return 42 self.assertEqual(int(Foo0()), 42) 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) class ExceptionalTrunc(base): def __trunc__(self): 1 / 0 self.assertRaises(ZeroDivisionError, lambda: int(ExceptionalTrunc())) 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),)) # # # Regression test for bugs.python.org/issue16060. # class BadInt(trunc_result_base): # def __int__(self): # return 42.0 # # class TruncReturnsBadInt(base): # def __trunc__(self): # return BadInt() # # self.assertRaises(TypeError, lambda: int(TruncReturnsBadInt())) def test_int_subclass_with_int(self): class MyInt(int): def __int__(self): return 42 class BadInt(int): def __int__(self): return 42.0 my_int = MyInt(7) self.assertEqual(my_int, 7) self.assertEqual(int(my_int), 42) self.assertRaises(TypeError, int, BadInt()) def test_int_returns_int_subclass(self): class BadInt: def __int__(self): return True # class BadInt2(int): # def __int__(self): # return True # class TruncReturnsBadInt: # def __trunc__(self): # return BadInt() class TruncReturnsIntSubclass: def __trunc__(self): return True bad_int = BadInt() # self.assertWarns(DeprecationWarning, lambda: int(bad_int)) # bad_int = BadInt2() # self.assertWarns(DeprecationWarning, lambda: int(bad_int)) # n = int(bad_int) # self.assertEqual(n, 1) # self.assertIs(type(n), int) # bad_int = TruncReturnsBadInt() # self.assertWarns(DeprecationWarning, lambda: int(bad_int)) # n = int(bad_int) # self.assertEqual(n, 1) # self.assertIs(type(n), int) good_int = TruncReturnsIntSubclass() n = int(good_int) self.assertEqual(n, 1) self.assertIs(type(n), int) n = IntSubclass(good_int) self.assertEqual(n, 1) self.assertIs(type(n), IntSubclass) # check('\xbd') # check('123\xbd') # check(' 123 456 ') # # check('123\x00') # # SF bug 1545497: embedded NULs were not detected with explicit base # check('123\x00', 10) # check('123\x00 245', 20) # check('123\x00 245', 16) # check('123\x00245', 20) # check('123\x00245', 16) # # # lone surrogate in Unicode string # check('123\ud800') # check('123\ud800', 10) def test_skulpt_overflow(self): x = 8000000000000000 y = 2821521012635269 # Addition z = x + y self.assertEqual(z, 10821521012635269) # Subtraction y = -y z = x - y self.assertEqual(z, 10821521012635269) # Multiplication x = 8000000000000123 y = 2821521012635269 z = x * y self.assertEqual(z, 22572168101082499047084554138087) def test_repr(self): self.assertEqual(repr(1), '1') if __name__ == "__main__": unittest.main()