mirror of
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433 lines
12 KiB
Python
433 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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"""
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test_util_inspect
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~~~~~~~~~~~~~~~
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Tests util.inspect functions.
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:copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
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:license: BSD, see LICENSE for details.
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"""
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import functools
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import sys
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from textwrap import dedent
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import pytest
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from six import PY3
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from sphinx.util import inspect
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def test_getargspec():
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def func(a, b, c=1, d=2, *e, **f):
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pass
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spec = inspect.getargspec(func)
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assert spec.args == ['a', 'b', 'c', 'd']
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assert spec.varargs == 'e'
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if PY3:
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assert spec.varkw == 'f'
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assert spec.defaults == (1, 2)
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assert spec.kwonlyargs == []
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assert spec.kwonlydefaults is None
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assert spec.annotations == {}
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else:
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assert spec.keywords == 'f'
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assert spec.defaults == [1, 2]
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def test_getargspec_partial():
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def func1(a, b, c=1, d=2, *e, **f):
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pass
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partial = functools.partial(func1, 10, c=11)
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spec = inspect.getargspec(partial)
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if PY3:
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assert spec.args == ['b']
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assert spec.varargs is None
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assert spec.varkw == 'f'
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assert spec.defaults is None
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assert spec.kwonlyargs == ['c', 'd']
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assert spec.kwonlydefaults == {'c': 11, 'd': 2}
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assert spec.annotations == {}
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else:
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assert spec.args == ['b', 'd']
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assert spec.varargs == 'e'
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assert spec.keywords == 'f'
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assert spec.defaults == [2]
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def test_getargspec_partial2():
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def fun(a, b, c=1, d=2):
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pass
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p = functools.partial(fun, 10, c=11)
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if PY3:
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# Python 3's partial is rather cleverer than Python 2's, and we
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# have to jump through some hoops to define an equivalent function
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# in a way that won't confuse Python 2's parser:
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ns = {}
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exec(dedent("""
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def f_expected(b, *, c=11, d=2):
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pass
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"""), ns)
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f_expected = ns["f_expected"]
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else:
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def f_expected(b, d=2):
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pass
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expected = inspect.getargspec(f_expected)
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assert expected == inspect.getargspec(p)
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def test_getargspec_builtin_type():
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with pytest.raises(TypeError):
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inspect.getargspec(int)
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def test_getargspec_bound_methods():
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def f_expected_unbound(self, arg1, **kwargs):
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pass
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expected_unbound = inspect.getargspec(f_expected_unbound)
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def f_expected_bound(arg1, **kwargs):
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pass
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expected_bound = inspect.getargspec(f_expected_bound)
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class Foo:
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def method(self, arg1, **kwargs):
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pass
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bound_method = Foo().method
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@functools.wraps(bound_method)
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def wrapped_bound_method(*args, **kwargs):
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pass
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assert expected_unbound == inspect.getargspec(Foo.method)
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if PY3 and sys.version_info >= (3, 4, 4):
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# On py2, the inspect functions don't properly handle bound
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# methods (they include a spurious 'self' argument)
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assert expected_bound == inspect.getargspec(bound_method)
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# On py2, the inspect functions can't properly handle wrapped
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# functions (no __wrapped__ support)
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assert expected_bound == inspect.getargspec(wrapped_bound_method)
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def test_Signature():
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# literals
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with pytest.raises(TypeError):
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inspect.Signature(1)
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with pytest.raises(TypeError):
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inspect.Signature('')
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# builitin classes
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with pytest.raises(TypeError):
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inspect.Signature(int)
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with pytest.raises(TypeError):
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inspect.Signature(str)
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# normal function
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def func(a, b, c=1, d=2, *e, **f):
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pass
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sig = inspect.Signature(func).format_args()
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assert sig == '(a, b, c=1, d=2, *e, **f)'
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def test_Signature_partial():
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def fun(a, b, c=1, d=2):
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pass
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p = functools.partial(fun, 10, c=11)
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sig = inspect.Signature(p).format_args()
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if sys.version_info < (3,):
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assert sig == '(b, d=2)'
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else:
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assert sig == '(b, *, c=11, d=2)'
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def test_Signature_methods():
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class Foo:
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def meth1(self, arg1, **kwargs):
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pass
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@classmethod
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def meth2(cls, arg1, *args, **kwargs):
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pass
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@staticmethod
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def meth3(arg1, *args, **kwargs):
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pass
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@functools.wraps(Foo().meth1)
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def wrapped_bound_method(*args, **kwargs):
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pass
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# unbound method
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sig = inspect.Signature(Foo.meth1).format_args()
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assert sig == '(self, arg1, **kwargs)'
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sig = inspect.Signature(Foo.meth1, bound_method=True).format_args()
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assert sig == '(arg1, **kwargs)'
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# bound method
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sig = inspect.Signature(Foo().meth1).format_args()
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assert sig == '(arg1, **kwargs)'
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# class method
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sig = inspect.Signature(Foo.meth2).format_args()
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assert sig == '(arg1, *args, **kwargs)'
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sig = inspect.Signature(Foo().meth2).format_args()
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assert sig == '(arg1, *args, **kwargs)'
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# static method
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sig = inspect.Signature(Foo.meth3).format_args()
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assert sig == '(arg1, *args, **kwargs)'
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sig = inspect.Signature(Foo().meth3).format_args()
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assert sig == '(arg1, *args, **kwargs)'
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# wrapped bound method
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sig = inspect.Signature(wrapped_bound_method).format_args()
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if sys.version_info < (3,):
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assert sig == '(*args, **kwargs)'
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elif sys.version_info < (3, 4, 4):
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assert sig == '(self, arg1, **kwargs)'
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else:
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assert sig == '(arg1, **kwargs)'
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@pytest.mark.skipif(sys.version_info < (3, 4),
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reason='functools.partialmethod is available on py34 or above')
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def test_Signature_partialmethod():
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from functools import partialmethod
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class Foo(object):
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def meth1(self, arg1, arg2, arg3=None, arg4=None):
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pass
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def meth2(self, arg1, arg2):
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pass
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foo = partialmethod(meth1, 1, 2)
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bar = partialmethod(meth1, 1, arg3=3)
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baz = partialmethod(meth2, 1, 2)
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subject = Foo()
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sig = inspect.Signature(subject.foo).format_args()
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assert sig == '(arg3=None, arg4=None)'
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sig = inspect.Signature(subject.bar).format_args()
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assert sig == '(arg2, *, arg3=3, arg4=None)'
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sig = inspect.Signature(subject.baz).format_args()
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assert sig == '()'
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@pytest.mark.skipif(sys.version_info < (3, 4),
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reason='type annotation test is available on py34 or above')
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def test_Signature_annotations():
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from typing_test_data import (
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f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13, f14, f15, Node)
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# Class annotations
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sig = inspect.Signature(f0).format_args()
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assert sig == '(x: int, y: numbers.Integral) -> None'
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# Generic types with concrete parameters
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sig = inspect.Signature(f1).format_args()
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assert sig == '(x: List[int]) -> List[int]'
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# TypeVars and generic types with TypeVars
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sig = inspect.Signature(f2).format_args()
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assert sig == '(x: List[T], y: List[T_co], z: T) -> List[T_contra]'
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# Union types
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sig = inspect.Signature(f3).format_args()
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assert sig == '(x: Union[str, numbers.Integral]) -> None'
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# Quoted annotations
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sig = inspect.Signature(f4).format_args()
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assert sig == '(x: str, y: str) -> None'
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# Keyword-only arguments
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sig = inspect.Signature(f5).format_args()
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assert sig == '(x: int, *, y: str, z: str) -> None'
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# Keyword-only arguments with varargs
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sig = inspect.Signature(f6).format_args()
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assert sig == '(x: int, *args, y: str, z: str) -> None'
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# Space around '=' for defaults
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sig = inspect.Signature(f7).format_args()
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assert sig == '(x: int = None, y: dict = {}) -> None'
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# Callable types
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sig = inspect.Signature(f8).format_args()
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assert sig == '(x: Callable[[int, str], int]) -> None'
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sig = inspect.Signature(f9).format_args()
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assert sig == '(x: Callable) -> None'
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# Tuple types
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sig = inspect.Signature(f10).format_args()
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assert sig == '(x: Tuple[int, str], y: Tuple[int, ...]) -> None'
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# Instance annotations
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sig = inspect.Signature(f11).format_args()
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assert sig == '(x: CustomAnnotation, y: 123) -> None'
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# has_retval=False
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sig = inspect.Signature(f11, has_retval=False).format_args()
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assert sig == '(x: CustomAnnotation, y: 123)'
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# tuple with more than two items
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sig = inspect.Signature(f12).format_args()
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assert sig == '() -> Tuple[int, str, int]'
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# optional
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sig = inspect.Signature(f13).format_args()
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assert sig == '() -> Optional[str]'
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# Any
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sig = inspect.Signature(f14).format_args()
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assert sig == '() -> Any'
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# ForwardRef
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sig = inspect.Signature(f15).format_args()
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assert sig == '(x: Unknown, y: int) -> Any'
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# type hints by string
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sig = inspect.Signature(Node.children).format_args()
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if (3, 5, 0) <= sys.version_info < (3, 5, 3):
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assert sig == '(self) -> List[Node]'
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else:
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assert sig == '(self) -> List[typing_test_data.Node]'
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sig = inspect.Signature(Node.__init__).format_args()
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assert sig == '(self, parent: Optional[Node]) -> None'
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def test_safe_getattr_with_default():
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class Foo(object):
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def __getattr__(self, item):
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raise Exception
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obj = Foo()
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result = inspect.safe_getattr(obj, 'bar', 'baz')
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assert result == 'baz'
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def test_safe_getattr_with_exception():
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class Foo(object):
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def __getattr__(self, item):
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raise Exception
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obj = Foo()
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try:
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inspect.safe_getattr(obj, 'bar')
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except AttributeError as exc:
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assert exc.args[0] == 'bar'
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else:
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pytest.fail('AttributeError not raised')
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def test_safe_getattr_with_property_exception():
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class Foo(object):
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@property
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def bar(self):
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raise Exception
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obj = Foo()
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try:
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inspect.safe_getattr(obj, 'bar')
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except AttributeError as exc:
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assert exc.args[0] == 'bar'
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else:
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pytest.fail('AttributeError not raised')
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def test_safe_getattr_with___dict___override():
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class Foo(object):
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@property
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def __dict__(self):
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raise Exception
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obj = Foo()
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try:
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inspect.safe_getattr(obj, 'bar')
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except AttributeError as exc:
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assert exc.args[0] == 'bar'
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else:
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pytest.fail('AttributeError not raised')
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def test_dictionary_sorting():
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dictionary = {"c": 3, "a": 1, "d": 2, "b": 4}
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description = inspect.object_description(dictionary)
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assert description == "{'a': 1, 'b': 4, 'c': 3, 'd': 2}"
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def test_set_sorting():
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set_ = set("gfedcba")
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description = inspect.object_description(set_)
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if PY3:
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assert description == "{'a', 'b', 'c', 'd', 'e', 'f', 'g'}"
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else:
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assert description == "set(['a', 'b', 'c', 'd', 'e', 'f', 'g'])"
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def test_set_sorting_fallback():
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set_ = set((None, 1))
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description = inspect.object_description(set_)
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if PY3:
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assert description in ("{1, None}", "{None, 1}")
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else:
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assert description in ("set([1, None])", "set([None, 1])")
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def test_dict_customtype():
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class CustomType(object):
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def __init__(self, value):
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self._value = value
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def __repr__(self):
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return "<CustomType(%r)>" % self._value
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dictionary = {CustomType(2): 2, CustomType(1): 1}
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description = inspect.object_description(dictionary)
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# Type is unsortable, just check that it does not crash
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assert "<CustomType(2)>: 2" in description
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def test_isstaticmethod():
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class Foo():
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@staticmethod
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def method1():
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pass
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def method2(self):
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pass
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class Bar(Foo):
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pass
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assert inspect.isstaticmethod(Foo.method1, Foo, 'method1') is True
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assert inspect.isstaticmethod(Foo.method2, Foo, 'method2') is False
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if sys.version_info < (3, 0):
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assert inspect.isstaticmethod(Bar.method1, Bar, 'method1') is False
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assert inspect.isstaticmethod(Bar.method2, Bar, 'method2') is False
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else:
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assert inspect.isstaticmethod(Bar.method1, Bar, 'method1') is True
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assert inspect.isstaticmethod(Bar.method2, Bar, 'method2') is False
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