mirror of
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567 lines
20 KiB
Python
567 lines
20 KiB
Python
"""
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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 2007-2020 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 _testcapi
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import datetime
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import functools
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import sys
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import types
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from inspect import Parameter
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import pytest
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from sphinx.util import inspect
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from sphinx.util.inspect import stringify_signature
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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.stringify_signature(inspect.signature(func))
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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)
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assert stringify_signature(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)
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assert stringify_signature(sig) == '(self, arg1, **kwargs)'
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sig = inspect.signature(Foo.meth1, bound_method=True)
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assert stringify_signature(sig) == '(arg1, **kwargs)'
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# bound method
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sig = inspect.signature(Foo().meth1)
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assert stringify_signature(sig) == '(arg1, **kwargs)'
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# class method
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sig = inspect.signature(Foo.meth2)
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assert stringify_signature(sig) == '(arg1, *args, **kwargs)'
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sig = inspect.signature(Foo().meth2)
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assert stringify_signature(sig) == '(arg1, *args, **kwargs)'
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# static method
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sig = inspect.signature(Foo.meth3)
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assert stringify_signature(sig) == '(arg1, *args, **kwargs)'
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sig = inspect.signature(Foo().meth3)
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assert stringify_signature(sig) == '(arg1, *args, **kwargs)'
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# wrapped bound method
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sig = inspect.signature(wrapped_bound_method)
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assert stringify_signature(sig) == '(arg1, **kwargs)'
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def test_signature_partialmethod():
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from functools import partialmethod
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class Foo:
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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)
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assert stringify_signature(sig) == '(arg3=None, arg4=None)'
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sig = inspect.signature(subject.bar)
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assert stringify_signature(sig) == '(arg2, *, arg3=3, arg4=None)'
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sig = inspect.signature(subject.baz)
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assert stringify_signature(sig) == '()'
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def test_signature_annotations():
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from typing_test_data import (f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10,
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f11, f12, f13, f14, f15, f16, f17, f18, f19, Node)
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# Class annotations
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sig = inspect.signature(f0)
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assert stringify_signature(sig) == '(x: int, y: numbers.Integral) -> None'
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# Generic types with concrete parameters
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sig = inspect.signature(f1)
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assert stringify_signature(sig) == '(x: List[int]) -> List[int]'
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# TypeVars and generic types with TypeVars
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sig = inspect.signature(f2)
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assert stringify_signature(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)
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assert stringify_signature(sig) == '(x: Union[str, numbers.Integral]) -> None'
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# Quoted annotations
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sig = inspect.signature(f4)
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assert stringify_signature(sig) == '(x: str, y: str) -> None'
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# Keyword-only arguments
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sig = inspect.signature(f5)
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assert stringify_signature(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)
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assert stringify_signature(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)
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assert stringify_signature(sig) == '(x: int = None, y: dict = {}) -> None'
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# Callable types
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sig = inspect.signature(f8)
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assert stringify_signature(sig) == '(x: Callable[[int, str], int]) -> None'
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sig = inspect.signature(f9)
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assert stringify_signature(sig) == '(x: Callable) -> None'
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# Tuple types
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sig = inspect.signature(f10)
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assert stringify_signature(sig) == '(x: Tuple[int, str], y: Tuple[int, ...]) -> None'
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# Instance annotations
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sig = inspect.signature(f11)
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assert stringify_signature(sig) == '(x: CustomAnnotation, y: 123) -> None'
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# tuple with more than two items
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sig = inspect.signature(f12)
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assert stringify_signature(sig) == '() -> Tuple[int, str, int]'
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# optional
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sig = inspect.signature(f13)
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assert stringify_signature(sig) == '() -> Optional[str]'
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# Any
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sig = inspect.signature(f14)
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assert stringify_signature(sig) == '() -> Any'
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# ForwardRef
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sig = inspect.signature(f15)
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assert stringify_signature(sig) == '(x: Unknown, y: int) -> Any'
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# keyword only arguments (1)
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sig = inspect.signature(f16)
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assert stringify_signature(sig) == '(arg1, arg2, *, arg3=None, arg4=None)'
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# keyword only arguments (2)
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sig = inspect.signature(f17)
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assert stringify_signature(sig) == '(*, arg3, arg4)'
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sig = inspect.signature(f18)
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assert stringify_signature(sig) == '(self, arg1: Union[int, Tuple] = 10) -> List[Dict]'
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# annotations for variadic and keyword parameters
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sig = inspect.signature(f19)
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assert stringify_signature(sig) == '(*args: int, **kwargs: str)'
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# type hints by string
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sig = inspect.signature(Node.children)
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if (3, 5, 0) <= sys.version_info < (3, 5, 3):
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assert stringify_signature(sig) == '(self) -> List[Node]'
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else:
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assert stringify_signature(sig) == '(self) -> List[typing_test_data.Node]'
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sig = inspect.signature(Node.__init__)
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assert stringify_signature(sig) == '(self, parent: Optional[Node]) -> None'
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# show_annotation is False
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sig = inspect.signature(f7)
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assert stringify_signature(sig, show_annotation=False) == '(x=None, y={})'
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# show_return_annotation is False
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sig = inspect.signature(f7)
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assert stringify_signature(sig, show_return_annotation=False) == '(x: int = None, y: dict = {})'
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@pytest.mark.skipif(sys.version_info < (3, 8), reason='python 3.8+ is required.')
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@pytest.mark.sphinx(testroot='ext-autodoc')
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def test_signature_annotations_py38(app):
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from target.pep570 import foo, bar, baz, qux
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# case: separator at head
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sig = inspect.signature(foo)
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assert stringify_signature(sig) == '(*, a, b)'
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# case: separator in the middle
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sig = inspect.signature(bar)
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assert stringify_signature(sig) == '(a, b, /, c, d)'
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sig = inspect.signature(baz)
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assert stringify_signature(sig) == '(a, /, *, b)'
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# case: separator at tail
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sig = inspect.signature(qux)
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assert stringify_signature(sig) == '(a, b, /)'
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def test_signature_from_str_basic():
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signature = '(a, b, *args, c=0, d="blah", **kwargs)'
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sig = inspect.signature_from_str(signature)
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assert list(sig.parameters.keys()) == ['a', 'b', 'args', 'c', 'd', 'kwargs']
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assert sig.parameters['a'].name == 'a'
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assert sig.parameters['a'].kind == Parameter.POSITIONAL_OR_KEYWORD
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assert sig.parameters['a'].default == Parameter.empty
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assert sig.parameters['a'].annotation == Parameter.empty
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assert sig.parameters['b'].name == 'b'
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assert sig.parameters['b'].kind == Parameter.POSITIONAL_OR_KEYWORD
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assert sig.parameters['b'].default == Parameter.empty
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assert sig.parameters['b'].annotation == Parameter.empty
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assert sig.parameters['args'].name == 'args'
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assert sig.parameters['args'].kind == Parameter.VAR_POSITIONAL
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assert sig.parameters['args'].default == Parameter.empty
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assert sig.parameters['args'].annotation == Parameter.empty
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assert sig.parameters['c'].name == 'c'
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assert sig.parameters['c'].kind == Parameter.KEYWORD_ONLY
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assert sig.parameters['c'].default == '0'
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assert sig.parameters['c'].annotation == Parameter.empty
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assert sig.parameters['d'].name == 'd'
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assert sig.parameters['d'].kind == Parameter.KEYWORD_ONLY
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assert sig.parameters['d'].default == "'blah'"
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assert sig.parameters['d'].annotation == Parameter.empty
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assert sig.parameters['kwargs'].name == 'kwargs'
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assert sig.parameters['kwargs'].kind == Parameter.VAR_KEYWORD
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assert sig.parameters['kwargs'].default == Parameter.empty
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assert sig.parameters['kwargs'].annotation == Parameter.empty
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assert sig.return_annotation == Parameter.empty
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def test_signature_from_str_default_values():
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signature = ('(a=0, b=0.0, c="str", d=b"bytes", e=..., f=True, '
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'g=[1, 2, 3], h={"a": 1}, i={1, 2, 3}, '
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'j=lambda x, y: None, k=None, l=object(), m=foo.bar.CONSTANT)')
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sig = inspect.signature_from_str(signature)
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assert sig.parameters['a'].default == '0'
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assert sig.parameters['b'].default == '0.0'
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assert sig.parameters['c'].default == "'str'"
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assert sig.parameters['d'].default == "b'bytes'"
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assert sig.parameters['e'].default == '...'
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assert sig.parameters['f'].default == 'True'
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assert sig.parameters['g'].default == '[1, 2, 3]'
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assert sig.parameters['h'].default == "{'a': 1}"
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assert sig.parameters['i'].default == '{1, 2, 3}'
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assert sig.parameters['j'].default == 'lambda x, y: ...'
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assert sig.parameters['k'].default == 'None'
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assert sig.parameters['l'].default == 'object()'
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assert sig.parameters['m'].default == 'foo.bar.CONSTANT'
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def test_signature_from_str_annotations():
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signature = '(a: int, *args: bytes, b: str = "blah", **kwargs: float) -> None'
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sig = inspect.signature_from_str(signature)
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assert list(sig.parameters.keys()) == ['a', 'args', 'b', 'kwargs']
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assert sig.parameters['a'].annotation == "int"
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assert sig.parameters['args'].annotation == "bytes"
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assert sig.parameters['b'].annotation == "str"
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assert sig.parameters['kwargs'].annotation == "float"
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assert sig.return_annotation == 'None'
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def test_signature_from_str_complex_annotations():
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sig = inspect.signature_from_str('() -> Tuple[str, int, ...]')
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assert sig.return_annotation == 'Tuple[str, int, ...]'
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sig = inspect.signature_from_str('() -> Callable[[int, int], int]')
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assert sig.return_annotation == 'Callable[[int, int], int]'
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def test_signature_from_str_kwonly_args():
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sig = inspect.signature_from_str('(a, *, b)')
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assert list(sig.parameters.keys()) == ['a', 'b']
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assert sig.parameters['a'].kind == Parameter.POSITIONAL_OR_KEYWORD
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assert sig.parameters['a'].default == Parameter.empty
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assert sig.parameters['b'].kind == Parameter.KEYWORD_ONLY
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assert sig.parameters['b'].default == Parameter.empty
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@pytest.mark.skipif(sys.version_info < (3, 8),
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reason='python-3.8 or above is required')
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def test_signature_from_str_positionaly_only_args():
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sig = inspect.signature_from_str('(a, /, b)')
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assert list(sig.parameters.keys()) == ['a', 'b']
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assert sig.parameters['a'].kind == Parameter.POSITIONAL_ONLY
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assert sig.parameters['b'].kind == Parameter.POSITIONAL_OR_KEYWORD
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def test_signature_from_str_invalid():
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with pytest.raises(SyntaxError):
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inspect.signature_from_str('')
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def test_safe_getattr_with_default():
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class Foo:
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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:
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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:
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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:
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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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assert description == "{'a', 'b', 'c', 'd', 'e', 'f', 'g'}"
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def test_set_sorting_fallback():
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set_ = {None, 1}
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description = inspect.object_description(set_)
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assert description in ("{1, None}", "{None, 1}")
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def test_frozenset_sorting():
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frozenset_ = frozenset("gfedcba")
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description = inspect.object_description(frozenset_)
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assert description == "frozenset({'a', 'b', 'c', 'd', 'e', 'f', 'g'})"
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def test_frozenset_sorting_fallback():
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frozenset_ = frozenset((None, 1))
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description = inspect.object_description(frozenset_)
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assert description in ("frozenset({1, None})", "frozenset({None, 1})")
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def test_dict_customtype():
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class CustomType:
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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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@pytest.mark.sphinx(testroot='ext-autodoc')
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def test_isclassmethod(app):
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from target.methods import Base, Inherited
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assert inspect.isclassmethod(Base.classmeth) is True
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assert inspect.isclassmethod(Base.meth) is False
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assert inspect.isclassmethod(Inherited.classmeth) is True
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assert inspect.isclassmethod(Inherited.meth) is False
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@pytest.mark.sphinx(testroot='ext-autodoc')
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def test_isstaticmethod(app):
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from target.methods import Base, Inherited
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assert inspect.isstaticmethod(Base.staticmeth, Base, 'staticmeth') is True
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assert inspect.isstaticmethod(Base.meth, Base, 'meth') is False
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assert inspect.isstaticmethod(Inherited.staticmeth, Inherited, 'staticmeth') is True
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assert inspect.isstaticmethod(Inherited.meth, Inherited, 'meth') is False
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@pytest.mark.sphinx(testroot='ext-autodoc')
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def test_iscoroutinefunction(app):
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from target.functions import coroutinefunc, func, partial_coroutinefunc
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from target.methods import Base
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assert inspect.iscoroutinefunction(func) is False # function
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assert inspect.iscoroutinefunction(coroutinefunc) is True # coroutine
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assert inspect.iscoroutinefunction(partial_coroutinefunc) is True # partial-ed coroutine
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assert inspect.iscoroutinefunction(Base.meth) is False # method
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assert inspect.iscoroutinefunction(Base.coroutinemeth) is True # coroutine-method
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# partial-ed coroutine-method
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partial_coroutinemeth = Base.__dict__['partial_coroutinemeth']
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assert inspect.iscoroutinefunction(partial_coroutinemeth) is True
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@pytest.mark.sphinx(testroot='ext-autodoc')
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def test_isfunction(app):
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from target.functions import builtin_func, partial_builtin_func
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from target.functions import func, partial_func
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from target.methods import Base
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assert inspect.isfunction(func) is True # function
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assert inspect.isfunction(partial_func) is True # partial-ed function
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assert inspect.isfunction(Base.meth) is True # method of class
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assert inspect.isfunction(Base.partialmeth) is True # partial-ed method of class
|
|
assert inspect.isfunction(Base().meth) is False # method of instance
|
|
assert inspect.isfunction(builtin_func) is False # builtin function
|
|
assert inspect.isfunction(partial_builtin_func) is False # partial-ed builtin function
|
|
|
|
|
|
@pytest.mark.sphinx(testroot='ext-autodoc')
|
|
def test_isbuiltin(app):
|
|
from target.functions import builtin_func, partial_builtin_func
|
|
from target.functions import func, partial_func
|
|
from target.methods import Base
|
|
|
|
assert inspect.isbuiltin(builtin_func) is True # builtin function
|
|
assert inspect.isbuiltin(partial_builtin_func) is True # partial-ed builtin function
|
|
assert inspect.isbuiltin(func) is False # function
|
|
assert inspect.isbuiltin(partial_func) is False # partial-ed function
|
|
assert inspect.isbuiltin(Base.meth) is False # method of class
|
|
assert inspect.isbuiltin(Base().meth) is False # method of instance
|
|
|
|
|
|
@pytest.mark.sphinx(testroot='ext-autodoc')
|
|
def test_isdescriptor(app):
|
|
from target.functions import func
|
|
from target.methods import Base
|
|
|
|
assert inspect.isdescriptor(Base.prop) is True # property of class
|
|
assert inspect.isdescriptor(Base().prop) is False # property of instance
|
|
assert inspect.isdescriptor(Base.meth) is True # method of class
|
|
assert inspect.isdescriptor(Base().meth) is True # method of instance
|
|
assert inspect.isdescriptor(func) is True # function
|
|
|
|
|
|
@pytest.mark.sphinx(testroot='ext-autodoc')
|
|
def test_isattributedescriptor(app):
|
|
from target.methods import Base
|
|
|
|
class Descriptor:
|
|
def __get__(self, obj, typ=None):
|
|
pass
|
|
|
|
testinstancemethod = _testcapi.instancemethod(str.__repr__)
|
|
|
|
assert inspect.isattributedescriptor(Base.prop) is True # property
|
|
assert inspect.isattributedescriptor(Base.meth) is False # method
|
|
assert inspect.isattributedescriptor(Base.staticmeth) is False # staticmethod
|
|
assert inspect.isattributedescriptor(Base.classmeth) is False # classmetho
|
|
assert inspect.isattributedescriptor(Descriptor) is False # custom descriptor class # NOQA
|
|
assert inspect.isattributedescriptor(str.join) is False # MethodDescriptorType # NOQA
|
|
assert inspect.isattributedescriptor(object.__init__) is False # WrapperDescriptorType # NOQA
|
|
assert inspect.isattributedescriptor(dict.__dict__['fromkeys']) is False # ClassMethodDescriptorType # NOQA
|
|
assert inspect.isattributedescriptor(types.FrameType.f_locals) is True # GetSetDescriptorType # NOQA
|
|
assert inspect.isattributedescriptor(datetime.timedelta.days) is True # MemberDescriptorType # NOQA
|
|
assert inspect.isattributedescriptor(testinstancemethod) is False # instancemethod (C-API) # NOQA
|
|
|
|
|
|
def test_isproperty(app):
|
|
from target.functions import func
|
|
from target.methods import Base
|
|
|
|
assert inspect.isproperty(Base.prop) is True # property of class
|
|
assert inspect.isproperty(Base().prop) is False # property of instance
|
|
assert inspect.isproperty(Base.meth) is False # method of class
|
|
assert inspect.isproperty(Base().meth) is False # method of instance
|
|
assert inspect.isproperty(func) is False # function
|
|
|
|
|
|
def test_unpartial():
|
|
def func1(a, b, c):
|
|
pass
|
|
|
|
func2 = functools.partial(func1, 1)
|
|
func2.__doc__ = "func2"
|
|
func3 = functools.partial(func2, 2) # nested partial object
|
|
|
|
assert inspect.unpartial(func2) is func1
|
|
assert inspect.unpartial(func3) is func1
|