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author | Tim Peters <tim.peters@gmail.com> | 2004-08-27 05:36:07 (GMT) |
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committer | Tim Peters <tim.peters@gmail.com> | 2004-08-27 05:36:07 (GMT) |
commit | 108f13751999f63c20fa9067f3fc0feb6a87718e (patch) | |
tree | 141841ac135b6be661c7d316f2fee21f158d5e2c /Lib/test/string_tests.py | |
parent | 894c512c2ff6c2ec511716e58d8c4d9ff7e8c137 (diff) | |
download | cpython-108f13751999f63c20fa9067f3fc0feb6a87718e.zip cpython-108f13751999f63c20fa9067f3fc0feb6a87718e.tar.gz cpython-108f13751999f63c20fa9067f3fc0feb6a87718e.tar.bz2 |
test_bug1001011(): Verify that
s.join([t]) is t
for (s, t) in (str, str), (unicode, unicode), and (str, unicode).
For (unicode, str), verify that it's *not* t (the result is promoted
to unicode instead). Also verify that when t is a subclass of str or
unicode that "the right thing" happens.
Diffstat (limited to 'Lib/test/string_tests.py')
-rw-r--r-- | Lib/test/string_tests.py | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py index 9cf6b9e1c..4335965 100644 --- a/Lib/test/string_tests.py +++ b/Lib/test/string_tests.py @@ -699,14 +699,13 @@ class MixinStrUserStringTest: class MixinStrUnicodeTest: - # Additional tests that only work with - # str and unicode + # Additional tests that only work with str and unicode. def test_bug1001011(self): # Make sure join returns a NEW object for single item sequences - # involving a subclass - # Make sure that it is of the appropriate type - # Check the optimisation still occurs for standard objects + # involving a subclass. + # Make sure that it is of the appropriate type. + # Check the optimisation still occurs for standard objects. t = self.type2test class subclass(t): pass @@ -714,3 +713,32 @@ class MixinStrUnicodeTest: s2 = t().join([s1]) self.assert_(s1 is not s2) self.assert_(type(s2) is t) + + s1 = t("abcd") + s2 = t().join([s1]) + self.assert_(s1 is s2) + + # Should also test mixed-type join. + if t is unicode: + s1 = subclass("abcd") + s2 = "".join([s1]) + self.assert_(s1 is not s2) + self.assert_(type(s2) is t) + + s1 = t("abcd") + s2 = "".join([s1]) + self.assert_(s1 is s2) + + elif t is str: + s1 = subclass("abcd") + s2 = u"".join([s1]) + self.assert_(s1 is not s2) + self.assert_(type(s2) is unicode) # promotes! + + s1 = t("abcd") + s2 = u"".join([s1]) + self.assert_(s1 is not s2) + self.assert_(type(s2) is unicode) # promotes! + + else: + self.fail("unexpected type for MixinStrUnicodeTest %r" % t) |