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python34
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python3.4
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idlelib
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idle_test
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Filename :
test_calltips.py
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import unittest import idlelib.CallTips as ct import textwrap import types default_tip = ct._default_callable_argspec # Test Class TC is used in multiple get_argspec test methods class TC(): 'doc' tip = "(ai=None, *b)" def __init__(self, ai=None, *b): 'doc' __init__.tip = "(self, ai=None, *b)" def t1(self): 'doc' t1.tip = "(self)" def t2(self, ai, b=None): 'doc' t2.tip = "(self, ai, b=None)" def t3(self, ai, *args): 'doc' t3.tip = "(self, ai, *args)" def t4(self, *args): 'doc' t4.tip = "(self, *args)" def t5(self, ai, b=None, *args, **kw): 'doc' t5.tip = "(self, ai, b=None, *args, **kw)" def t6(no, self): 'doc' t6.tip = "(no, self)" def __call__(self, ci): 'doc' __call__.tip = "(self, ci)" # attaching .tip to wrapped methods does not work @classmethod def cm(cls, a): 'doc' @staticmethod def sm(b): 'doc' tc = TC() signature = ct.get_argspec # 2.7 and 3.x use different functions class Get_signatureTest(unittest.TestCase): # The signature function must return a string, even if blank. # Test a variety of objects to be sure that none cause it to raise # (quite aside from getting as correct an answer as possible). # The tests of builtins may break if inspect or the docstrings change, # but a red buildbot is better than a user crash (as has happened). # For a simple mismatch, change the expected output to the actual. def test_builtins(self): # Python class that inherits builtin methods class List(list): "List() doc" # Simulate builtin with no docstring for default tip test class SB: __call__ = None def gtest(obj, out): self.assertEqual(signature(obj), out) if List.__doc__ is not None: gtest(List, List.__doc__) gtest(list.__new__, 'Create and return a new object. See help(type) for accurate signature.') gtest(list.__init__, 'Initialize self. See help(type(self)) for accurate signature.') append_doc = "L.append(object) -> None -- append object to end" gtest(list.append, append_doc) gtest([].append, append_doc) gtest(List.append, append_doc) gtest(types.MethodType, "method(function, instance)") gtest(SB(), default_tip) def test_signature_wrap(self): if textwrap.TextWrapper.__doc__ is not None: self.assertEqual(signature(textwrap.TextWrapper), '''\ (width=70, initial_indent='', subsequent_indent='', expand_tabs=True, replace_whitespace=True, fix_sentence_endings=False, break_long_words=True, drop_whitespace=True, break_on_hyphens=True, tabsize=8, *, max_lines=None, placeholder=' [...]')''') def test_docline_truncation(self): def f(): pass f.__doc__ = 'a'*300 self.assertEqual(signature(f), '()\n' + 'a' * (ct._MAX_COLS-3) + '...') def test_multiline_docstring(self): # Test fewer lines than max. self.assertEqual(signature(list), "list() -> new empty list\n" "list(iterable) -> new list initialized from iterable's items") # Test max lines self.assertEqual(signature(bytes), '''\ bytes(iterable_of_ints) -> bytes bytes(string, encoding[, errors]) -> bytes bytes(bytes_or_buffer) -> immutable copy of bytes_or_buffer bytes(int) -> bytes object of size given by the parameter initialized with null bytes bytes() -> empty bytes object''') # Test more than max lines def f(): pass f.__doc__ = 'a\n' * 15 self.assertEqual(signature(f), '()' + '\na' * ct._MAX_LINES) def test_functions(self): def t1(): 'doc' t1.tip = "()" def t2(a, b=None): 'doc' t2.tip = "(a, b=None)" def t3(a, *args): 'doc' t3.tip = "(a, *args)" def t4(*args): 'doc' t4.tip = "(*args)" def t5(a, b=None, *args, **kw): 'doc' t5.tip = "(a, b=None, *args, **kw)" doc = '\ndoc' if t1.__doc__ is not None else '' for func in (t1, t2, t3, t4, t5, TC): self.assertEqual(signature(func), func.tip + doc) def test_methods(self): doc = '\ndoc' if TC.__doc__ is not None else '' for meth in (TC.t1, TC.t2, TC.t3, TC.t4, TC.t5, TC.t6, TC.__call__): self.assertEqual(signature(meth), meth.tip + doc) self.assertEqual(signature(TC.cm), "(a)" + doc) self.assertEqual(signature(TC.sm), "(b)" + doc) def test_bound_methods(self): # test that first parameter is correctly removed from argspec doc = '\ndoc' if TC.__doc__ is not None else '' for meth, mtip in ((tc.t1, "()"), (tc.t4, "(*args)"), (tc.t6, "(self)"), (tc.__call__, '(ci)'), (tc, '(ci)'), (TC.cm, "(a)"),): self.assertEqual(signature(meth), mtip + doc) def test_starred_parameter(self): # test that starred first parameter is *not* removed from argspec class C: def m1(*args): pass def m2(**kwds): pass c = C() for meth, mtip in ((C.m1, '(*args)'), (c.m1, "(*args)"), (C.m2, "(**kwds)"), (c.m2, "(**kwds)"),): self.assertEqual(signature(meth), mtip) def test_non_ascii_name(self): # test that re works to delete a first parameter name that # includes non-ascii chars, such as various forms of A. uni = "(A\u0391\u0410\u05d0\u0627\u0905\u1e00\u3042, a)" assert ct._first_param.sub('', uni) == '(a)' def test_no_docstring(self): def nd(s): pass TC.nd = nd self.assertEqual(signature(nd), "(s)") self.assertEqual(signature(TC.nd), "(s)") self.assertEqual(signature(tc.nd), "()") def test_attribute_exception(self): class NoCall: def __getattr__(self, name): raise BaseException class Call(NoCall): def __call__(self, ci): pass for meth, mtip in ((NoCall, default_tip), (Call, default_tip), (NoCall(), ''), (Call(), '(ci)')): self.assertEqual(signature(meth), mtip) def test_non_callables(self): for obj in (0, 0.0, '0', b'0', [], {}): self.assertEqual(signature(obj), '') class Get_entityTest(unittest.TestCase): def test_bad_entity(self): self.assertIsNone(ct.get_entity('1/0')) def test_good_entity(self): self.assertIs(ct.get_entity('int'), int) if __name__ == '__main__': unittest.main(verbosity=2, exit=False)