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