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python3.7
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idlelib
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idle_test
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"Test calltip, coverage 60%" from idlelib import calltip import unittest import textwrap import types import re # 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)" def nd(self): pass # No doc. # attaching .tip to wrapped methods does not work @classmethod def cm(cls, a): 'doc' @staticmethod def sm(b): 'doc' tc = TC() default_tip = calltip._default_callable_argspec get_spec = calltip.get_argspec class Get_argspecTest(unittest.TestCase): # The get_spec 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): def tiptest(obj, out): self.assertEqual(get_spec(obj), out) # Python class that inherits builtin methods class List(list): "List() doc" # Simulate builtin with no docstring for default tip test class SB: __call__ = None if List.__doc__ is not None: tiptest(List, f'(iterable=(), /){calltip._argument_positional}' f'\n{List.__doc__}') tiptest(list.__new__, '(*args, **kwargs)\n' 'Create and return a new object. ' 'See help(type) for accurate signature.') tiptest(list.__init__, '(self, /, *args, **kwargs)' + calltip._argument_positional + '\n' + 'Initialize self. See help(type(self)) for accurate signature.') append_doc = (calltip._argument_positional + "\nAppend object to the end of the list.") tiptest(list.append, '(self, object, /)' + append_doc) tiptest(List.append, '(self, object, /)' + append_doc) tiptest([].append, '(object, /)' + append_doc) tiptest(types.MethodType, "method(function, instance)") tiptest(SB(), default_tip) p = re.compile('') tiptest(re.sub, '''\ (pattern, repl, string, count=0, flags=0) Return the string obtained by replacing the leftmost non-overlapping occurrences of the pattern in string by the replacement repl. repl can be either a string or a callable; if a string, backslash escapes in it are processed. If it is a callable, it's passed the Match object and must return''') tiptest(p.sub, '''\ (repl, string, count=0) Return the string obtained by replacing the leftmost \ non-overlapping occurrences o...''') def test_signature_wrap(self): if textwrap.TextWrapper.__doc__ is not None: self.assertEqual(get_spec(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_properly_formated(self): def foo(s='a'*100): pass def bar(s='a'*100): """Hello Guido""" pass def baz(s='a'*100, z='b'*100): pass indent = calltip._INDENT sfoo = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\ "aaaaaaaaaa')" sbar = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\ "aaaaaaaaaa')\nHello Guido" sbaz = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\ "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\ "aaaaaaaaaa', z='bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"\ "bbbbbbbbbbbbbbbbb\n" + indent + "bbbbbbbbbbbbbbbbbbbbbb"\ "bbbbbbbbbbbbbbbbbbbbbb')" for func,doc in [(foo, sfoo), (bar, sbar), (baz, sbaz)]: with self.subTest(func=func, doc=doc): self.assertEqual(get_spec(func), doc) def test_docline_truncation(self): def f(): pass f.__doc__ = 'a'*300 self.assertEqual(get_spec(f), f"()\n{'a'*(calltip._MAX_COLS-3) + '...'}") def test_multiline_docstring(self): # Test fewer lines than max. self.assertEqual(get_spec(range), "range(stop) -> range object\n" "range(start, stop[, step]) -> range object") # Test max lines self.assertEqual(get_spec(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(get_spec(f), '()' + '\na' * calltip._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): with self.subTest(func=func): self.assertEqual(get_spec(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__): with self.subTest(meth=meth): self.assertEqual(get_spec(meth), meth.tip + doc) self.assertEqual(get_spec(TC.cm), "(a)" + doc) self.assertEqual(get_spec(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)"),): with self.subTest(meth=meth, mtip=mtip): self.assertEqual(get_spec(meth), mtip + doc) def test_starred_parameter(self): # test that starred first parameter is *not* removed from argspec class C: def m1(*args): pass c = C() for meth, mtip in ((C.m1, '(*args)'), (c.m1, "(*args)"),): with self.subTest(meth=meth, mtip=mtip): self.assertEqual(get_spec(meth), mtip) def test_invalid_method_get_spec(self): class C: def m2(**kwargs): pass class Test: def __call__(*, a): pass mtip = calltip._invalid_method self.assertEqual(get_spec(C().m2), mtip) self.assertEqual(get_spec(Test()), 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 calltip._first_param.sub('', uni) == '(a)' def test_no_docstring(self): for meth, mtip in ((TC.nd, "(self)"), (tc.nd, "()")): with self.subTest(meth=meth, mtip=mtip): self.assertEqual(get_spec(meth), mtip) def test_buggy_getattr_class(self): class NoCall: def __getattr__(self, name): # Not invoked for class attribute. raise IndexError # Bug. class CallA(NoCall): def __call__(self, ci): # Bug does not matter. pass class CallB(NoCall): def __call__(oui, a, b, c): # Non-standard 'self'. pass for meth, mtip in ((NoCall, default_tip), (CallA, default_tip), (NoCall(), ''), (CallA(), '(ci)'), (CallB(), '(a, b, c)')): with self.subTest(meth=meth, mtip=mtip): self.assertEqual(get_spec(meth), mtip) def test_metaclass_class(self): # Failure case for issue 38689. class Type(type): # Type() requires 3 type args, returns class. __class__ = property({}.__getitem__, {}.__setitem__) class Object(metaclass=Type): __slots__ = '__class__' for meth, mtip in ((Type, default_tip), (Object, default_tip), (Object(), '')): with self.subTest(meth=meth, mtip=mtip): self.assertEqual(get_spec(meth), mtip) def test_non_callables(self): for obj in (0, 0.0, '0', b'0', [], {}): with self.subTest(obj=obj): self.assertEqual(get_spec(obj), '') class Get_entityTest(unittest.TestCase): def test_bad_entity(self): self.assertIsNone(calltip.get_entity('1/0')) def test_good_entity(self): self.assertIs(calltip.get_entity('int'), int) if __name__ == '__main__': unittest.main(verbosity=2)
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