mirror of https://github.com/python/cpython
264 lines
9.7 KiB
Python
264 lines
9.7 KiB
Python
"Test calltip, coverage 60%"
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from idlelib import calltip
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import unittest
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import textwrap
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import types
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import re
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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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def nd(self): pass # No doc.
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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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default_tip = calltip._default_callable_argspec
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get_spec = calltip.get_argspec
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class Get_argspecTest(unittest.TestCase):
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# The get_spec 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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def tiptest(obj, out):
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self.assertEqual(get_spec(obj), out)
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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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if List.__doc__ is not None:
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tiptest(List,
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f'(iterable=(), /){calltip._argument_positional}'
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f'\n{List.__doc__}')
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tiptest(list.__new__,
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'(*args, **kwargs)\n'
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'Create and return a new object. '
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'See help(type) for accurate signature.')
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tiptest(list.__init__,
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'(self, /, *args, **kwargs)'
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+ calltip._argument_positional + '\n' +
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'Initialize self. See help(type(self)) for accurate signature.')
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append_doc = (calltip._argument_positional
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+ "\nAppend object to the end of the list.")
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tiptest(list.append, '(self, object, /)' + append_doc)
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tiptest(List.append, '(self, object, /)' + append_doc)
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tiptest([].append, '(object, /)' + append_doc)
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tiptest(types.MethodType, "method(function, instance)")
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tiptest(SB(), default_tip)
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p = re.compile('')
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tiptest(re.sub, '''\
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(pattern, repl, string, count=0, flags=0)
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Return the string obtained by replacing the leftmost
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non-overlapping occurrences of the pattern in string by the
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replacement repl. repl can be either a string or a callable;
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if a string, backslash escapes in it are processed. If it is
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a callable, it's passed the Match object and must return''')
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tiptest(p.sub, '''\
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(repl, string, count=0)
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Return the string obtained by replacing the leftmost \
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non-overlapping occurrences o...''')
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def test_signature_wrap(self):
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if textwrap.TextWrapper.__doc__ is not None:
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self.assertEqual(get_spec(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_properly_formated(self):
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def foo(s='a'*100):
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pass
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def bar(s='a'*100):
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"""Hello Guido"""
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pass
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def baz(s='a'*100, z='b'*100):
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pass
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indent = calltip._INDENT
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sfoo = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\
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"aaaaaaaaaa')"
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sbar = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\
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"aaaaaaaaaa')\nHello Guido"
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sbaz = "(s='aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"\
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" + indent + "aaaaaaaaa"\
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"aaaaaaaaaa', z='bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"\
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"bbbbbbbbbbbbbbbbb\n" + indent + "bbbbbbbbbbbbbbbbbbbbbb"\
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"bbbbbbbbbbbbbbbbbbbbbb')"
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for func,doc in [(foo, sfoo), (bar, sbar), (baz, sbaz)]:
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with self.subTest(func=func, doc=doc):
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self.assertEqual(get_spec(func), doc)
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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(get_spec(f), f"()\n{'a'*(calltip._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(get_spec(range),
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"range(stop) -> range object\n"
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"range(start, stop[, step]) -> range object")
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# Test max lines
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self.assertEqual(get_spec(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(get_spec(f), '()' + '\na' * calltip._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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doc = '\ndoc' if t1.__doc__ is not None else ''
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for func in (t1, t2, t3, t4, t5, TC):
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with self.subTest(func=func):
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self.assertEqual(get_spec(func), func.tip + doc)
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def test_methods(self):
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doc = '\ndoc' if TC.__doc__ is not None else ''
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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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with self.subTest(meth=meth):
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self.assertEqual(get_spec(meth), meth.tip + doc)
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self.assertEqual(get_spec(TC.cm), "(a)" + doc)
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self.assertEqual(get_spec(TC.sm), "(b)" + doc)
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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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doc = '\ndoc' if TC.__doc__ is not None else ''
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for meth, mtip in ((tc.t1, "()"), (tc.t4, "(*args)"),
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(tc.t6, "(self)"), (tc.__call__, '(ci)'),
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(tc, '(ci)'), (TC.cm, "(a)"),):
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with self.subTest(meth=meth, mtip=mtip):
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self.assertEqual(get_spec(meth), mtip + doc)
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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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c = C()
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for meth, mtip in ((C.m1, '(*args)'), (c.m1, "(*args)"),):
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with self.subTest(meth=meth, mtip=mtip):
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self.assertEqual(get_spec(meth), mtip)
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def test_invalid_method_get_spec(self):
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class C:
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def m2(**kwargs): pass
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class Test:
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def __call__(*, a): pass
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mtip = calltip._invalid_method
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self.assertEqual(get_spec(C().m2), mtip)
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self.assertEqual(get_spec(Test()), 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 calltip._first_param.sub('', uni) == '(a)'
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def test_no_docstring(self):
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for meth, mtip in ((TC.nd, "(self)"), (tc.nd, "()")):
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with self.subTest(meth=meth, mtip=mtip):
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self.assertEqual(get_spec(meth), mtip)
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def test_buggy_getattr_class(self):
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class NoCall:
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def __getattr__(self, name): # Not invoked for class attribute.
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raise IndexError # Bug.
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class CallA(NoCall):
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def __call__(self, ci): # Bug does not matter.
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pass
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class CallB(NoCall):
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def __call__(oui, a, b, c): # Non-standard 'self'.
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pass
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for meth, mtip in ((NoCall, default_tip), (CallA, default_tip),
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(NoCall(), ''), (CallA(), '(ci)'),
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(CallB(), '(a, b, c)')):
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with self.subTest(meth=meth, mtip=mtip):
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self.assertEqual(get_spec(meth), mtip)
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def test_metaclass_class(self): # Failure case for issue 38689.
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class Type(type): # Type() requires 3 type args, returns class.
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__class__ = property({}.__getitem__, {}.__setitem__)
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class Object(metaclass=Type):
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__slots__ = '__class__'
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for meth, mtip in ((Type, default_tip), (Object, default_tip),
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(Object(), '')):
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with self.subTest(meth=meth, mtip=mtip):
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self.assertEqual(get_spec(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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with self.subTest(obj=obj):
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self.assertEqual(get_spec(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(calltip.get_entity('1/0'))
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def test_good_entity(self):
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self.assertIs(calltip.get_entity('int'), int)
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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