Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
test_bool.py
# Test properties of bool promised by PEP 285
import unittest
from test import support
import os
class BoolTest(unittest.TestCase):
def assertIs(self, a, b):
self.assert_(a is b)
def assertIsNot(self, a, b):
self.assert_(a is not b)
def test_subclass(self):
try:
class C(bool):
pass
except TypeError:
pass
else:
self.fail("bool should not be subclassable")
self.assertRaises(TypeError, int.__new__, bool, 0)
def test_print(self):
try:
fo = open(support.TESTFN, "w")
print(False, True, file=fo)
fo.close()
fo = open(support.TESTFN, "r")
self.assertEqual(fo.read(), 'False True\n')
finally:
fo.close()
os.remove(support.TESTFN)
def test_repr(self):
self.assertEqual(repr(False), 'False')
self.assertEqual(repr(True), 'True')
self.assertEqual(eval(repr(False)), False)
self.assertEqual(eval(repr(True)), True)
def test_str(self):
self.assertEqual(str(False), 'False')
self.assertEqual(str(True), 'True')
def test_int(self):
self.assertEqual(int(False), 0)
self.assertIsNot(int(False), False)
self.assertEqual(int(True), 1)
self.assertIsNot(int(True), True)
def test_math(self):
self.assertEqual(+False, 0)
self.assertIsNot(+False, False)
self.assertEqual(-False, 0)
self.assertIsNot(-False, False)
self.assertEqual(abs(False), 0)
self.assertIsNot(abs(False), False)
self.assertEqual(+True, 1)
self.assertIsNot(+True, True)
self.assertEqual(-True, -1)
self.assertEqual(abs(True), 1)
self.assertIsNot(abs(True), True)
self.assertEqual(~False, -1)
self.assertEqual(~True, -2)
self.assertEqual(False+2, 2)
self.assertEqual(True+2, 3)
self.assertEqual(2+False, 2)
self.assertEqual(2+True, 3)
self.assertEqual(False+False, 0)
self.assertIsNot(False+False, False)
self.assertEqual(False+True, 1)
self.assertIsNot(False+True, True)
self.assertEqual(True+False, 1)
self.assertIsNot(True+False, True)
self.assertEqual(True+True, 2)
self.assertEqual(True-True, 0)
self.assertIsNot(True-True, False)
self.assertEqual(False-False, 0)
self.assertIsNot(False-False, False)
self.assertEqual(True-False, 1)
self.assertIsNot(True-False, True)
self.assertEqual(False-True, -1)
self.assertEqual(True*1, 1)
self.assertEqual(False*1, 0)
self.assertIsNot(False*1, False)
self.assertEqual(True/1, 1)
self.assertIsNot(True/1, True)
self.assertEqual(False/1, 0)
self.assertIsNot(False/1, False)
for b in False, True:
for i in 0, 1, 2:
self.assertEqual(b**i, int(b)**i)
self.assertIsNot(b**i, bool(int(b)**i))
for a in False, True:
for b in False, True:
self.assertIs(a&b, bool(int(a)&int(b)))
self.assertIs(a|b, bool(int(a)|int(b)))
self.assertIs(a^b, bool(int(a)^int(b)))
self.assertEqual(a&int(b), int(a)&int(b))
self.assertIsNot(a&int(b), bool(int(a)&int(b)))
self.assertEqual(a|int(b), int(a)|int(b))
self.assertIsNot(a|int(b), bool(int(a)|int(b)))
self.assertEqual(a^int(b), int(a)^int(b))
self.assertIsNot(a^int(b), bool(int(a)^int(b)))
self.assertEqual(int(a)&b, int(a)&int(b))
self.assertIsNot(int(a)&b, bool(int(a)&int(b)))
self.assertEqual(int(a)|b, int(a)|int(b))
self.assertIsNot(int(a)|b, bool(int(a)|int(b)))
self.assertEqual(int(a)^b, int(a)^int(b))
self.assertIsNot(int(a)^b, bool(int(a)^int(b)))
self.assertIs(1==1, True)
self.assertIs(1==0, False)
self.assertIs(0<1, True)
self.assertIs(1<0, False)
self.assertIs(0<=0, True)
self.assertIs(1<=0, False)
self.assertIs(1>0, True)
self.assertIs(1>1, False)
self.assertIs(1>=1, True)
self.assertIs(0>=1, False)
self.assertIs(0!=1, True)
self.assertIs(0!=0, False)
x = [1]
self.assertIs(x is x, True)
self.assertIs(x is not x, False)
self.assertIs(1 in x, True)
self.assertIs(0 in x, False)
self.assertIs(1 not in x, False)
self.assertIs(0 not in x, True)
x = {1: 2}
self.assertIs(x is x, True)
self.assertIs(x is not x, False)
self.assertIs(1 in x, True)
self.assertIs(0 in x, False)
self.assertIs(1 not in x, False)
self.assertIs(0 not in x, True)
self.assertIs(not True, False)
self.assertIs(not False, True)
def test_convert(self):
self.assertRaises(TypeError, bool, 42, 42)
self.assertIs(bool(10), True)
self.assertIs(bool(1), True)
self.assertIs(bool(-1), True)
self.assertIs(bool(0), False)
self.assertIs(bool("hello"), True)
self.assertIs(bool(""), False)
self.assertIs(bool(), False)
def test_format(self):
self.assertEqual("%d" % False, "0")
self.assertEqual("%d" % True, "1")
self.assertEqual("%x" % False, "0")
self.assertEqual("%x" % True, "1")
def test_hasattr(self):
self.assertIs(hasattr([], "append"), True)
self.assertIs(hasattr([], "wobble"), False)
def test_callable(self):
self.assertIs(hasattr(len, '__call__'), True)
self.assertIs(hasattr(1, '__call__'), False)
def test_isinstance(self):
self.assertIs(isinstance(True, bool), True)
self.assertIs(isinstance(False, bool), True)
self.assertIs(isinstance(True, int), True)
self.assertIs(isinstance(False, int), True)
self.assertIs(isinstance(1, bool), False)
self.assertIs(isinstance(0, bool), False)
def test_issubclass(self):
self.assertIs(issubclass(bool, int), True)
self.assertIs(issubclass(int, bool), False)
def test_contains(self):
self.assertIs(1 in {}, False)
self.assertIs(1 in {1:1}, True)
def test_string(self):
self.assertIs("xyz".endswith("z"), True)
self.assertIs("xyz".endswith("x"), False)
self.assertIs("xyz0123".isalnum(), True)
self.assertIs("@#$%".isalnum(), False)
self.assertIs("xyz".isalpha(), True)
self.assertIs("@#$%".isalpha(), False)
self.assertIs("0123".isdigit(), True)
self.assertIs("xyz".isdigit(), False)
self.assertIs("xyz".islower(), True)
self.assertIs("XYZ".islower(), False)
self.assertIs("0123".isdecimal(), True)
self.assertIs("xyz".isdecimal(), False)
self.assertIs("0123".isnumeric(), True)
self.assertIs("xyz".isnumeric(), False)
self.assertIs(" ".isspace(), True)
self.assertIs("\xa0".isspace(), True)
self.assertIs("\u3000".isspace(), True)
self.assertIs("XYZ".isspace(), False)
self.assertIs("X".istitle(), True)
self.assertIs("x".istitle(), False)
self.assertIs("XYZ".isupper(), True)
self.assertIs("xyz".isupper(), False)
self.assertIs("xyz".startswith("x"), True)
self.assertIs("xyz".startswith("z"), False)
def test_boolean(self):
self.assertEqual(True & 1, 1)
self.assert_(not isinstance(True & 1, bool))
self.assertIs(True & True, True)
self.assertEqual(True | 1, 1)
self.assert_(not isinstance(True | 1, bool))
self.assertIs(True | True, True)
self.assertEqual(True ^ 1, 0)
self.assert_(not isinstance(True ^ 1, bool))
self.assertIs(True ^ True, False)
def test_fileclosed(self):
try:
f = open(support.TESTFN, "w")
self.assertIs(f.closed, False)
f.close()
self.assertIs(f.closed, True)
finally:
os.remove(support.TESTFN)
def test_operator(self):
import operator
self.assertIs(operator.truth(0), False)
self.assertIs(operator.truth(1), True)
self.assertIs(operator.not_(1), False)
self.assertIs(operator.not_(0), True)
self.assertIs(operator.contains([], 1), False)
self.assertIs(operator.contains([1], 1), True)
self.assertIs(operator.lt(0, 0), False)
self.assertIs(operator.lt(0, 1), True)
self.assertIs(operator.is_(True, True), True)
self.assertIs(operator.is_(True, False), False)
self.assertIs(operator.is_not(True, True), False)
self.assertIs(operator.is_not(True, False), True)
def test_marshal(self):
import marshal
self.assertIs(marshal.loads(marshal.dumps(True)), True)
self.assertIs(marshal.loads(marshal.dumps(False)), False)
def test_pickle(self):
import pickle
self.assertIs(pickle.loads(pickle.dumps(True)), True)
self.assertIs(pickle.loads(pickle.dumps(False)), False)
self.assertIs(pickle.loads(pickle.dumps(True, True)), True)
self.assertIs(pickle.loads(pickle.dumps(False, True)), False)
def test_picklevalues(self):
# Test for specific backwards-compatible pickle values
import pickle
self.assertEqual(pickle.dumps(True, protocol=0), b"I01\n.")
self.assertEqual(pickle.dumps(False, protocol=0), b"I00\n.")
self.assertEqual(pickle.dumps(True, protocol=1), b"I01\n.")
self.assertEqual(pickle.dumps(False, protocol=1), b"I00\n.")
self.assertEqual(pickle.dumps(True, protocol=2), b'\x80\x02\x88.')
self.assertEqual(pickle.dumps(False, protocol=2), b'\x80\x02\x89.')
def test_convert_to_bool(self):
# Verify that TypeError occurs when bad things are returned
# from __bool__(). This isn't really a bool test, but
# it's related.
check = lambda o: self.assertRaises(TypeError, bool, o)
class Foo(object):
def __bool__(self):
return self
check(Foo())
class Bar(object):
def __bool__(self):
return "Yes"
check(Bar())
class Baz(int):
def __bool__(self):
return self
check(Baz())
# __bool__() must return a bool not an int
class Spam(int):
def __bool__(self):
return 1
check(Spam())
class Eggs:
def __len__(self):
return -1
self.assertRaises(ValueError, bool, Eggs())
def test_sane_len(self):
# this test just tests our assumptions about __len__
# this will start failing if __len__ changes assertions
for badval in ['illegal', -1, 1 << 32]:
class A:
def __len__(self):
return badval
try:
bool(A())
except (Exception) as e_bool:
try:
len(A())
except (Exception) as e_len:
self.assertEqual(str(e_bool), str(e_len))
def test_main():
support.run_unittest(BoolTest)
if __name__ == "__main__":
test_main()