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import unittest
import struct
import sys
from test import test_support, string_tests
class StrTest(
string_tests.CommonTest,
string_tests.MixinStrUnicodeUserStringTest,
string_tests.MixinStrUnicodeTest,
):
type2test = str8
# We don't need to propagate to str
def fixtype(self, obj):
return obj
def test_formatting(self):
string_tests.MixinStrUnicodeUserStringTest.test_formatting(self)
self.assertRaises(OverflowError, '%c'.__mod__, 0x12341234)
def test_iterators(self):
# Make sure str objects have an __iter__ method
it = "abc".__iter__()
self.assertEqual(next(it), "a")
self.assertEqual(next(it), "b")
self.assertEqual(next(it), "c")
self.assertRaises(StopIteration, next, it)
def test_conversion(self):
# Make sure __str__() behaves properly
class Foo1:
def __str__(self):
return "foo"
class Foo2(object):
def __str__(self):
return "foo"
class Foo3(object):
def __str__(self):
return "foo"
class Foo4(str8):
def __str__(self):
return "foo"
class Foo5(str):
def __unicode__(self):
return "foo"
class Foo6(str8):
def __str__(self):
return "foos"
def __unicode__(self):
return "foou"
class Foo7(str):
def __str__(self):
return "foos"
def __unicode__(self):
return "foou"
class Foo8(str):
def __new__(cls, content=""):
return str.__new__(cls, 2*content)
def __str__(self):
return self
class Foo9(str8):
def __str__(self):
return "string"
def __unicode__(self):
return "not unicode"
self.assertEqual(str(Foo1()), "foo")
self.assertEqual(str(Foo2()), "foo")
self.assertEqual(str(Foo3()), "foo")
self.assertEqual(str(Foo4("bar")), "foo")
self.assertEqual(str(Foo5("bar")), "foo")
self.assertEqual(str8(Foo6("bar")), "foos")
self.assertEqual(str(Foo6("bar")), "foou")
self.assertEqual(str8(Foo7("bar")), "foos")
self.assertEqual(str(Foo7("bar")), "foou")
self.assertEqual(str(Foo8("foo")), "foofoo")
self.assertEqual(str8(Foo9("foo")), "string")
self.assertEqual(str(Foo9("foo")), "not unicode")
def test_expandtabs_overflows_gracefully(self):
# This test only affects 32-bit platforms because expandtabs can only take
# an int as the max value, not a 64-bit C long. If expandtabs is changed
# to take a 64-bit long, this test should apply to all platforms.
if sys.maxint > (1 << 32) or struct.calcsize('P') != 4:
return
self.assertRaises(OverflowError, 't\tt\t'.expandtabs, sys.maxint)
def test_main():
test_support.run_unittest(StrTest)
if __name__ == "__main__":
test_main()
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