cocorobolx/python/skulpt/test/unit/test_int.py

import sys
import unittest

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 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)
        """ fails in skulpt
        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

        """ this causes some errors in skulpt due to other int sizes
        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
        """
            skulpt does currently return here a 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.maxsize
        self.assertEqual(x >> 1, x//2)

        x = int('1' * 600)
        """
            skulpt does currently return here a long
            self.assertIsInstance(x, int)
        """
        self.assertIsInstance(x, long)

        self.assertRaises(TypeError, int, 1, 12)

        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_small_ints(self):
        # Bug #3236: Return small longs from PyLong_FromString
        self.assertIs(int('10'), 10)
        self.assertIs(int('-1'), -1)
        """
        skulpt does currently not support byte strings
        self.assertIs(int(b'10'), 10)
        self.assertIs(int(b'-1'), -1)
        """

    def test_no_args(self):
        self.assertEqual(int(), 0)

    def test_keyword_args(self):
        # Test invoking int() using keyword arguments.
        #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, int, '0', 1)
        self.assertRaises(ValueError, int, '0', 37)
        self.assertRaises(ValueError, int, '0', -909)  # An old magic value base from Python 2.
        self.assertRaises(ValueError, int, '0', 0-(2**234))
        self.assertRaises(ValueError, int, '0', 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, int, '0', 5.5)
        self.assertRaises(TypeError, 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, 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)

    """
    skulpt does not support bytes, byteArray, etc..
    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

        values = [b'100',
                  bytearray(b'100'),
                  CustomStr('100'),
                  CustomBytes(b'100'),
                  CustomByteArray(b'100')]

        for x in values:
            msg = 'x has type %s' % type(x).__name__
            self.assertEqual(int(x), 100, msg=msg)
            self.assertEqual(int(x, 2), 4, msg=msg)
    """

    def test_string_float(self):
        self.assertRaises(ValueError, int, '1.2')

    # removed test due to incompatibilites with skulpt
    # skulpt does not really implement the numeric tower
    # as specified in PEP3141 and therefore __trunc__
    # is not really working
    #def test_intconversion(self):

    def test_int_subclass_with_int(self):
        # skulpt does not support subclassing builtin types
        #class MyInt(int):
        class MyInt():
            def __int__(self):
                return 42

        # skulpt does not support subclassing builtin types
        #class BadInt(int):
        class BadInt():
            def __int__(self):
                return 42.0

        my_int = MyInt(7)
        # not possible due to unsupported subclassing
        #self.assertEqual(my_int, 7)
        self.assertEqual(int(my_int), 42)

        self.assertRaises(TypeError, int, BadInt())

    def test_int_returns_int_subclass(self):
        class TruncReturnsIntSubclass:
            def __trunc__(self):
                return True

        good_int = TruncReturnsIntSubclass()
        n = int(good_int)
        self.assertEqual(n, 1)

    def test_error_message(self):
      """ skulpt does not support with statements
        def check(s, base=None):
            with self.assertRaises(ValueError,
                                   msg="int(%r, %r)" % (s, base)) as cm:
                if base is None:
                    int(s)
                else:
                    int(s, base)
            self.assertEqual(cm.exception.args[0],
                "invalid literal for int() with base %d: %r" %
                (10 if base is None else base, s))

        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)
        # byte string with embedded NUL
        check(b'123\x00')
        check(b'123\x00', 10)
        # non-UTF-8 byte string
        check(b'123\xbd')
        check(b'123\xbd', 10)
        # lone surrogate in Unicode string
        check('123\ud800')
        check('123\ud800', 10)
      """

      def check(s, base=None):
          if base is None:
              int(s)
          else:
              int(s, base)

      self.assertRaises(ValueError, check, '\xbd', None)
      self.assertRaises(ValueError, check, '123\xbd', None)
      self.assertRaises(ValueError, check, '  123 456  ', None)

      self.assertRaises(ValueError, check, '123\x00', None)
      # SF bug 1545497: embedded NULs were not detected with explicit base
      self.assertRaises(ValueError, check, '123\x00', 10)
      self.assertRaises(ValueError, check, '123\x00', 10)
      self.assertRaises(ValueError, check, '123\x00 245', 20)
      self.assertRaises(ValueError, check, '123\x00 245', 16)
      self.assertRaises(ValueError, check, '123\x00245', 20)
      self.assertRaises(ValueError, check, '123\x00245', 16)
      # byte string with embedded NUL
      #self.assertRaises(ValueError, check, b'123\x00')
      #self.assertRaises(ValueError, check, b'123\x00', 10)
      # non-UTF-8 byte string
      #self.assertRaises(ValueError, check, b'123\xbd')
      #self.assertRaises(ValueError, check, b'123\xbd', 10)
      # lone surrogate in Unicode string
      self.assertRaises(ValueError, check, '123\ud800', None)
      self.assertRaises(ValueError, check, '123\ud800', 10)

    def test_conjugate(self):
        self.assertEqual(int(3).conjugate(), 3)
        self.assertEqual(int(-3).conjugate(), -3)
        self.assertEqual(bool(True).conjugate(), 1)
        self.assertEqual(bool(False).conjugate(), 0)

    def test_modulo(self):
        # helper
        def mod(a, b):
            return a % b

        self.assertRaises(ZeroDivisionError, mod, 5, 0)
        self.assertEqual(mod(5, 1), 0)
        self.assertEqual(mod(5, 2), 1)
        self.assertEqual(mod(5, 4), 1)
        self.assertEqual(mod(5, 5), 0)
        self.assertEqual(mod(5, 6), 5)
        self.assertEqual(mod(0, 1), 0)
        self.assertEqual(mod(-5, 6), 1)
        self.assertEqual(mod(-5, -2), -1)

    def test_division(self):
        self.assertEqual(3/2, 1)
        self.assertEqual(3//2, 1)
        self.assertEqual(3/2.0, 1.5)
        self.assertEqual(3//2.0, 1.0)
        self.assertEqual(-3/2, -2)
        self.assertEqual(-3//2, -2)
        self.assertEqual(-3/2.0, -1.5)
        self.assertEqual(-3//2.0, -2.0)

    def test_lshift_type(self):
        # Bug #620: lshift of 0 should not become long
        # 0 << 0
        x = 0 << 0
        self.assertEqual(x, 0)
        self.assertIsInstance(x, int)

        x = 0L << 0
        self.assertEqual(x, 0L)
        self.assertIsInstance(x, long)

        # 0 <<        
        x = 0 << 1
        self.assertEqual(x, 0)
        self.assertIsInstance(x, int)
        x = 0 << 1000
        self.assertEqual(x, 0)
        self.assertIsInstance(x, int)

        x = 0L << 1
        self.assertEqual(x, 0L)
        self.assertIsInstance(x, long)
        x = 0L << 1000
        self.assertEqual(x, 0L)
        self.assertIsInstance(x, long)

        # << 0
        x = 1 << 0
        self.assertEqual(x, 1)
        self.assertIsInstance(x, int)

        x = 1L << 0
        self.assertEqual(x, 1L)
        self.assertIsInstance(x, long)
        

class IntTest(unittest.TestCase):
    def test_int_inherited(self):
        class c:
          def __int__(self):
              return 3

        class d(c):
            def k(self):
                self.b = 2

        self.assertEqual(int(c()), 3)
        self.assertEqual(int(d()), 3)

if __name__ == '__main__':
    unittest.main()