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Text File  |  2003-12-30  |  13KB  |  349 lines
  1. # Test properties of bool promised by PEP 285
  2.  
  3. import unittest
  4. from test import test_support
  5.  
  6. import os
  7.  
  8. class BoolTest(unittest.TestCase):
  9.  
  10.     def assertIs(self, a, b):
  11.         self.assert_(a is b)
  12.  
  13.     def assertIsNot(self, a, b):
  14.         self.assert_(a is not b)
  15.  
  16.     def test_subclass(self):
  17.         try:
  18.             class C(bool):
  19.                 pass
  20.         except TypeError:
  21.             pass
  22.         else:
  23.             self.fail("bool should not be subclassable")
  24.  
  25.         self.assertRaises(TypeError, int.__new__, bool, 0)
  26.  
  27.     def test_print(self):
  28.         try:
  29.             fo = open(test_support.TESTFN, "wb")
  30.             print >> fo, False, True
  31.             fo.close()
  32.             fo = open(test_support.TESTFN, "rb")
  33.             self.assertEqual(fo.read(), 'False True\n')
  34.         finally:
  35.             fo.close()
  36.             os.remove(test_support.TESTFN)
  37.  
  38.     def test_repr(self):
  39.         self.assertEqual(repr(False), 'False')
  40.         self.assertEqual(repr(True), 'True')
  41.         self.assertEqual(eval(repr(False)), False)
  42.         self.assertEqual(eval(repr(True)), True)
  43.  
  44.     def test_str(self):
  45.         self.assertEqual(str(False), 'False')
  46.         self.assertEqual(str(True), 'True')
  47.  
  48.     def test_int(self):
  49.         self.assertEqual(int(False), 0)
  50.         self.assertIsNot(int(False), False)
  51.         self.assertEqual(int(True), 1)
  52.         self.assertIsNot(int(True), True)
  53.  
  54.     def test_math(self):
  55.         self.assertEqual(+False, 0)
  56.         self.assertIsNot(+False, False)
  57.         self.assertEqual(-False, 0)
  58.         self.assertIsNot(-False, False)
  59.         self.assertEqual(abs(False), 0)
  60.         self.assertIsNot(abs(False), False)
  61.         self.assertEqual(+True, 1)
  62.         self.assertIsNot(+True, True)
  63.         self.assertEqual(-True, -1)
  64.         self.assertEqual(abs(True), 1)
  65.         self.assertIsNot(abs(True), True)
  66.         self.assertEqual(~False, -1)
  67.         self.assertEqual(~True, -2)
  68.  
  69.         self.assertEqual(False+2, 2)
  70.         self.assertEqual(True+2, 3)
  71.         self.assertEqual(2+False, 2)
  72.         self.assertEqual(2+True, 3)
  73.  
  74.         self.assertEqual(False+False, 0)
  75.         self.assertIsNot(False+False, False)
  76.         self.assertEqual(False+True, 1)
  77.         self.assertIsNot(False+True, True)
  78.         self.assertEqual(True+False, 1)
  79.         self.assertIsNot(True+False, True)
  80.         self.assertEqual(True+True, 2)
  81.  
  82.         self.assertEqual(True-True, 0)
  83.         self.assertIsNot(True-True, False)
  84.         self.assertEqual(False-False, 0)
  85.         self.assertIsNot(False-False, False)
  86.         self.assertEqual(True-False, 1)
  87.         self.assertIsNot(True-False, True)
  88.         self.assertEqual(False-True, -1)
  89.  
  90.         self.assertEqual(True*1, 1)
  91.         self.assertEqual(False*1, 0)
  92.         self.assertIsNot(False*1, False)
  93.  
  94.         self.assertEqual(True/1, 1)
  95.         self.assertIsNot(True/1, True)
  96.         self.assertEqual(False/1, 0)
  97.         self.assertIsNot(False/1, False)
  98.  
  99.         for b in False, True:
  100.             for i in 0, 1, 2:
  101.                 self.assertEqual(b**i, int(b)**i)
  102.                 self.assertIsNot(b**i, bool(int(b)**i))
  103.  
  104.         for a in False, True:
  105.             for b in False, True:
  106.                 self.assertIs(a&b, bool(int(a)&int(b)))
  107.                 self.assertIs(a|b, bool(int(a)|int(b)))
  108.                 self.assertIs(a^b, bool(int(a)^int(b)))
  109.                 self.assertEqual(a&int(b), int(a)&int(b))
  110.                 self.assertIsNot(a&int(b), bool(int(a)&int(b)))
  111.                 self.assertEqual(a|int(b), int(a)|int(b))
  112.                 self.assertIsNot(a|int(b), bool(int(a)|int(b)))
  113.                 self.assertEqual(a^int(b), int(a)^int(b))
  114.                 self.assertIsNot(a^int(b), bool(int(a)^int(b)))
  115.                 self.assertEqual(int(a)&b, int(a)&int(b))
  116.                 self.assertIsNot(int(a)&b, bool(int(a)&int(b)))
  117.                 self.assertEqual(int(a)|b, int(a)|int(b))
  118.                 self.assertIsNot(int(a)|b, bool(int(a)|int(b)))
  119.                 self.assertEqual(int(a)^b, int(a)^int(b))
  120.                 self.assertIsNot(int(a)^b, bool(int(a)^int(b)))
  121.  
  122.         self.assertIs(1==1, True)
  123.         self.assertIs(1==0, False)
  124.         self.assertIs(0<1, True)
  125.         self.assertIs(1<0, False)
  126.         self.assertIs(0<=0, True)
  127.         self.assertIs(1<=0, False)
  128.         self.assertIs(1>0, True)
  129.         self.assertIs(1>1, False)
  130.         self.assertIs(1>=1, True)
  131.         self.assertIs(0>=1, False)
  132.         self.assertIs(0!=1, True)
  133.         self.assertIs(0!=0, False)
  134.  
  135.         x = [1]
  136.         self.assertIs(x is x, True)
  137.         self.assertIs(x is not x, False)
  138.  
  139.         self.assertIs(1 in x, True)
  140.         self.assertIs(0 in x, False)
  141.         self.assertIs(1 not in x, False)
  142.         self.assertIs(0 not in x, True)
  143.  
  144.         x = {1: 2}
  145.         self.assertIs(x is x, True)
  146.         self.assertIs(x is not x, False)
  147.  
  148.         self.assertIs(1 in x, True)
  149.         self.assertIs(0 in x, False)
  150.         self.assertIs(1 not in x, False)
  151.         self.assertIs(0 not in x, True)
  152.  
  153.         self.assertIs(not True, False)
  154.         self.assertIs(not False, True)
  155.  
  156.     def test_convert(self):
  157.         self.assertRaises(TypeError, bool, 42, 42)
  158.         self.assertIs(bool(10), True)
  159.         self.assertIs(bool(1), True)
  160.         self.assertIs(bool(-1), True)
  161.         self.assertIs(bool(0), False)
  162.         self.assertIs(bool("hello"), True)
  163.         self.assertIs(bool(""), False)
  164.         self.assertIs(bool(), False)
  165.  
  166.     def test_hasattr(self):
  167.         self.assertIs(hasattr([], "append"), True)
  168.         self.assertIs(hasattr([], "wobble"), False)
  169.  
  170.     def test_callable(self):
  171.         self.assertIs(callable(len), True)
  172.         self.assertIs(callable(1), False)
  173.  
  174.     def test_isinstance(self):
  175.         self.assertIs(isinstance(True, bool), True)
  176.         self.assertIs(isinstance(False, bool), True)
  177.         self.assertIs(isinstance(True, int), True)
  178.         self.assertIs(isinstance(False, int), True)
  179.         self.assertIs(isinstance(1, bool), False)
  180.         self.assertIs(isinstance(0, bool), False)
  181.  
  182.     def test_issubclass(self):
  183.         self.assertIs(issubclass(bool, int), True)
  184.         self.assertIs(issubclass(int, bool), False)
  185.  
  186.     def test_haskey(self):
  187.         self.assertIs({}.has_key(1), False)
  188.         self.assertIs({1:1}.has_key(1), True)
  189.  
  190.     def test_string(self):
  191.         self.assertIs("xyz".endswith("z"), True)
  192.         self.assertIs("xyz".endswith("x"), False)
  193.         self.assertIs("xyz0123".isalnum(), True)
  194.         self.assertIs("@#$%".isalnum(), False)
  195.         self.assertIs("xyz".isalpha(), True)
  196.         self.assertIs("@#$%".isalpha(), False)
  197.         self.assertIs("0123".isdigit(), True)
  198.         self.assertIs("xyz".isdigit(), False)
  199.         self.assertIs("xyz".islower(), True)
  200.         self.assertIs("XYZ".islower(), False)
  201.         self.assertIs(" ".isspace(), True)
  202.         self.assertIs("XYZ".isspace(), False)
  203.         self.assertIs("X".istitle(), True)
  204.         self.assertIs("x".istitle(), False)
  205.         self.assertIs("XYZ".isupper(), True)
  206.         self.assertIs("xyz".isupper(), False)
  207.         self.assertIs("xyz".startswith("x"), True)
  208.         self.assertIs("xyz".startswith("z"), False)
  209.  
  210.         if test_support.have_unicode:
  211.             self.assertIs(unicode("xyz", 'ascii').endswith(unicode("z", 'ascii')), True)
  212.             self.assertIs(unicode("xyz", 'ascii').endswith(unicode("x", 'ascii')), False)
  213.             self.assertIs(unicode("xyz0123", 'ascii').isalnum(), True)
  214.             self.assertIs(unicode("@#$%", 'ascii').isalnum(), False)
  215.             self.assertIs(unicode("xyz", 'ascii').isalpha(), True)
  216.             self.assertIs(unicode("@#$%", 'ascii').isalpha(), False)
  217.             self.assertIs(unicode("0123", 'ascii').isdecimal(), True)
  218.             self.assertIs(unicode("xyz", 'ascii').isdecimal(), False)
  219.             self.assertIs(unicode("0123", 'ascii').isdigit(), True)
  220.             self.assertIs(unicode("xyz", 'ascii').isdigit(), False)
  221.             self.assertIs(unicode("xyz", 'ascii').islower(), True)
  222.             self.assertIs(unicode("XYZ", 'ascii').islower(), False)
  223.             self.assertIs(unicode("0123", 'ascii').isnumeric(), True)
  224.             self.assertIs(unicode("xyz", 'ascii').isnumeric(), False)
  225.             self.assertIs(unicode(" ", 'ascii').isspace(), True)
  226.             self.assertIs(unicode("XYZ", 'ascii').isspace(), False)
  227.             self.assertIs(unicode("X", 'ascii').istitle(), True)
  228.             self.assertIs(unicode("x", 'ascii').istitle(), False)
  229.             self.assertIs(unicode("XYZ", 'ascii').isupper(), True)
  230.             self.assertIs(unicode("xyz", 'ascii').isupper(), False)
  231.             self.assertIs(unicode("xyz", 'ascii').startswith(unicode("x", 'ascii')), True)
  232.             self.assertIs(unicode("xyz", 'ascii').startswith(unicode("z", 'ascii')), False)
  233.  
  234.     def test_boolean(self):
  235.         self.assertEqual(True & 1, 1)
  236.         self.assert_(not isinstance(True & 1, bool))
  237.         self.assertIs(True & True, True)
  238.  
  239.         self.assertEqual(True | 1, 1)
  240.         self.assert_(not isinstance(True | 1, bool))
  241.         self.assertIs(True | True, True)
  242.  
  243.         self.assertEqual(True ^ 1, 0)
  244.         self.assert_(not isinstance(True ^ 1, bool))
  245.         self.assertIs(True ^ True, False)
  246.  
  247.     def test_fileclosed(self):
  248.         try:
  249.             f = file(test_support.TESTFN, "w")
  250.             self.assertIs(f.closed, False)
  251.             f.close()
  252.             self.assertIs(f.closed, True)
  253.         finally:
  254.             os.remove(test_support.TESTFN)
  255.  
  256.     def test_operator(self):
  257.         import operator
  258.         self.assertIs(operator.truth(0), False)
  259.         self.assertIs(operator.truth(1), True)
  260.         self.assertIs(operator.isCallable(0), False)
  261.         self.assertIs(operator.isCallable(len), True)
  262.         self.assertIs(operator.isNumberType(None), False)
  263.         self.assertIs(operator.isNumberType(0), True)
  264.         self.assertIs(operator.not_(1), False)
  265.         self.assertIs(operator.not_(0), True)
  266.         self.assertIs(operator.isSequenceType(0), False)
  267.         self.assertIs(operator.isSequenceType([]), True)
  268.         self.assertIs(operator.contains([], 1), False)
  269.         self.assertIs(operator.contains([1], 1), True)
  270.         self.assertIs(operator.isMappingType(1), False)
  271.         self.assertIs(operator.isMappingType({}), True)
  272.         self.assertIs(operator.lt(0, 0), False)
  273.         self.assertIs(operator.lt(0, 1), True)
  274.         self.assertIs(operator.is_(True, True), True)
  275.         self.assertIs(operator.is_(True, False), False)
  276.         self.assertIs(operator.is_not(True, True), False)
  277.         self.assertIs(operator.is_not(True, False), True)
  278.  
  279.     def test_marshal(self):
  280.         import marshal
  281.         self.assertIs(marshal.loads(marshal.dumps(True)), True)
  282.         self.assertIs(marshal.loads(marshal.dumps(False)), False)
  283.  
  284.     def test_pickle(self):
  285.         import pickle
  286.         self.assertIs(pickle.loads(pickle.dumps(True)), True)
  287.         self.assertIs(pickle.loads(pickle.dumps(False)), False)
  288.         self.assertIs(pickle.loads(pickle.dumps(True, True)), True)
  289.         self.assertIs(pickle.loads(pickle.dumps(False, True)), False)
  290.  
  291.     def test_cpickle(self):
  292.         import cPickle
  293.         self.assertIs(cPickle.loads(cPickle.dumps(True)), True)
  294.         self.assertIs(cPickle.loads(cPickle.dumps(False)), False)
  295.         self.assertIs(cPickle.loads(cPickle.dumps(True, True)), True)
  296.         self.assertIs(cPickle.loads(cPickle.dumps(False, True)), False)
  297.  
  298.     def test_mixedpickle(self):
  299.         import pickle, cPickle
  300.         self.assertIs(pickle.loads(cPickle.dumps(True)), True)
  301.         self.assertIs(pickle.loads(cPickle.dumps(False)), False)
  302.         self.assertIs(pickle.loads(cPickle.dumps(True, True)), True)
  303.         self.assertIs(pickle.loads(cPickle.dumps(False, True)), False)
  304.  
  305.         self.assertIs(cPickle.loads(pickle.dumps(True)), True)
  306.         self.assertIs(cPickle.loads(pickle.dumps(False)), False)
  307.         self.assertIs(cPickle.loads(pickle.dumps(True, True)), True)
  308.         self.assertIs(cPickle.loads(pickle.dumps(False, True)), False)
  309.  
  310.     def test_picklevalues(self):
  311.         import pickle, cPickle
  312.  
  313.         # Test for specific backwards-compatible pickle values
  314.         self.assertEqual(pickle.dumps(True), "I01\n.")
  315.         self.assertEqual(pickle.dumps(False), "I00\n.")
  316.         self.assertEqual(cPickle.dumps(True), "I01\n.")
  317.         self.assertEqual(cPickle.dumps(False), "I00\n.")
  318.         self.assertEqual(pickle.dumps(True, True), "I01\n.")
  319.         self.assertEqual(pickle.dumps(False, True), "I00\n.")
  320.         self.assertEqual(cPickle.dumps(True, True), "I01\n.")
  321.         self.assertEqual(cPickle.dumps(False, True), "I00\n.")
  322.  
  323.     def test_convert_to_bool(self):
  324.         # Verify that TypeError occurs when bad things are returned
  325.         # from __nonzero__().  This isn't really a bool test, but
  326.         # it's related.
  327.         check = lambda o: self.assertRaises(TypeError, bool, o)
  328.         class Foo(object):
  329.             def __nonzero__(self):
  330.                 return self
  331.         check(Foo())
  332.  
  333.         class Bar(object):
  334.             def __nonzero__(self):
  335.                 return "Yes"
  336.         check(Bar())
  337.  
  338.         class Baz(int):
  339.             def __nonzero__(self):
  340.                 return self
  341.         check(Baz())
  342.  
  343.  
  344. def test_main():
  345.     test_support.run_unittest(BoolTest)
  346.  
  347. if __name__ == "__main__":
  348.     test_main()
  349.