mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-11 08:03:55 +00:00
2819ce64a4
If the default argument value is a class, and not an instance of a
class, `a.value.attr("__repr__")` raises a `ValueError`. Switching to
`repr(a.value)` makes this use case work.
Fixes #2028
196 lines
7.7 KiB
Python
196 lines
7.7 KiB
Python
# -*- coding: utf-8 -*-
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import pytest
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from pybind11_tests import kwargs_and_defaults as m
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import platform
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import sys
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pypy = platform.python_implementation() == "PyPy"
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def test_function_signatures(doc):
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assert doc(m.kw_func0) == "kw_func0(arg0: int, arg1: int) -> str"
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assert doc(m.kw_func1) == "kw_func1(x: int, y: int) -> str"
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assert doc(m.kw_func2) == "kw_func2(x: int = 100, y: int = 200) -> str"
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assert doc(m.kw_func3) == "kw_func3(data: str = 'Hello world!') -> None"
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assert doc(m.kw_func4) == "kw_func4(myList: List[int] = [13, 17]) -> str"
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assert doc(m.kw_func_udl) == "kw_func_udl(x: int, y: int = 300) -> str"
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assert doc(m.kw_func_udl_z) == "kw_func_udl_z(x: int, y: int = 0) -> str"
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assert doc(m.args_function) == "args_function(*args) -> tuple"
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assert doc(m.args_kwargs_function) == "args_kwargs_function(*args, **kwargs) -> tuple"
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assert doc(m.KWClass.foo0) == \
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"foo0(self: m.kwargs_and_defaults.KWClass, arg0: int, arg1: float) -> None"
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assert doc(m.KWClass.foo1) == \
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"foo1(self: m.kwargs_and_defaults.KWClass, x: int, y: float) -> None"
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def test_named_arguments(msg):
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assert m.kw_func0(5, 10) == "x=5, y=10"
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assert m.kw_func1(5, 10) == "x=5, y=10"
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assert m.kw_func1(5, y=10) == "x=5, y=10"
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assert m.kw_func1(y=10, x=5) == "x=5, y=10"
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assert m.kw_func2() == "x=100, y=200"
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assert m.kw_func2(5) == "x=5, y=200"
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assert m.kw_func2(x=5) == "x=5, y=200"
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assert m.kw_func2(y=10) == "x=100, y=10"
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assert m.kw_func2(5, 10) == "x=5, y=10"
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assert m.kw_func2(x=5, y=10) == "x=5, y=10"
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with pytest.raises(TypeError) as excinfo:
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# noinspection PyArgumentList
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m.kw_func2(x=5, y=10, z=12)
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assert excinfo.match(
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r'(?s)^kw_func2\(\): incompatible.*Invoked with: kwargs: ((x=5|y=10|z=12)(, |$))' + '{3}$')
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assert m.kw_func4() == "{13 17}"
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assert m.kw_func4(myList=[1, 2, 3]) == "{1 2 3}"
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assert m.kw_func_udl(x=5, y=10) == "x=5, y=10"
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assert m.kw_func_udl_z(x=5) == "x=5, y=0"
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def test_arg_and_kwargs():
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args = 'arg1_value', 'arg2_value', 3
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assert m.args_function(*args) == args
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args = 'a1', 'a2'
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kwargs = dict(arg3='a3', arg4=4)
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assert m.args_kwargs_function(*args, **kwargs) == (args, kwargs)
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def test_mixed_args_and_kwargs(msg):
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mpa = m.mixed_plus_args
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mpk = m.mixed_plus_kwargs
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mpak = m.mixed_plus_args_kwargs
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mpakd = m.mixed_plus_args_kwargs_defaults
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assert mpa(1, 2.5, 4, 99.5, None) == (1, 2.5, (4, 99.5, None))
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assert mpa(1, 2.5) == (1, 2.5, ())
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with pytest.raises(TypeError) as excinfo:
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assert mpa(1)
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assert msg(excinfo.value) == """
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mixed_plus_args(): incompatible function arguments. The following argument types are supported:
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1. (arg0: int, arg1: float, *args) -> tuple
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Invoked with: 1
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""" # noqa: E501 line too long
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with pytest.raises(TypeError) as excinfo:
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assert mpa()
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assert msg(excinfo.value) == """
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mixed_plus_args(): incompatible function arguments. The following argument types are supported:
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1. (arg0: int, arg1: float, *args) -> tuple
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Invoked with:
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""" # noqa: E501 line too long
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assert mpk(-2, 3.5, pi=3.14159, e=2.71828) == (-2, 3.5, {'e': 2.71828, 'pi': 3.14159})
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assert mpak(7, 7.7, 7.77, 7.777, 7.7777, minusseven=-7) == (
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7, 7.7, (7.77, 7.777, 7.7777), {'minusseven': -7})
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assert mpakd() == (1, 3.14159, (), {})
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assert mpakd(3) == (3, 3.14159, (), {})
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assert mpakd(j=2.71828) == (1, 2.71828, (), {})
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assert mpakd(k=42) == (1, 3.14159, (), {'k': 42})
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assert mpakd(1, 1, 2, 3, 5, 8, then=13, followedby=21) == (
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1, 1, (2, 3, 5, 8), {'then': 13, 'followedby': 21})
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# Arguments specified both positionally and via kwargs should fail:
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with pytest.raises(TypeError) as excinfo:
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assert mpakd(1, i=1)
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assert msg(excinfo.value) == """
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mixed_plus_args_kwargs_defaults(): incompatible function arguments. The following argument types are supported:
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1. (i: int = 1, j: float = 3.14159, *args, **kwargs) -> tuple
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Invoked with: 1; kwargs: i=1
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""" # noqa: E501 line too long
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with pytest.raises(TypeError) as excinfo:
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assert mpakd(1, 2, j=1)
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assert msg(excinfo.value) == """
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mixed_plus_args_kwargs_defaults(): incompatible function arguments. The following argument types are supported:
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1. (i: int = 1, j: float = 3.14159, *args, **kwargs) -> tuple
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Invoked with: 1, 2; kwargs: j=1
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""" # noqa: E501 line too long
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def test_keyword_only_args(msg):
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assert m.kwonly_all(i=1, j=2) == (1, 2)
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assert m.kwonly_all(j=1, i=2) == (2, 1)
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with pytest.raises(TypeError) as excinfo:
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assert m.kwonly_all(i=1) == (1,)
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assert "incompatible function arguments" in str(excinfo.value)
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with pytest.raises(TypeError) as excinfo:
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assert m.kwonly_all(1, 2) == (1, 2)
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assert "incompatible function arguments" in str(excinfo.value)
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assert m.kwonly_some(1, k=3, j=2) == (1, 2, 3)
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assert m.kwonly_with_defaults(z=8) == (3, 4, 5, 8)
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assert m.kwonly_with_defaults(2, z=8) == (2, 4, 5, 8)
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assert m.kwonly_with_defaults(2, j=7, k=8, z=9) == (2, 7, 8, 9)
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assert m.kwonly_with_defaults(2, 7, z=9, k=8) == (2, 7, 8, 9)
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assert m.kwonly_mixed(1, j=2) == (1, 2)
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assert m.kwonly_mixed(j=2, i=3) == (3, 2)
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assert m.kwonly_mixed(i=2, j=3) == (2, 3)
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assert m.kwonly_plus_more(4, 5, k=6, extra=7) == (4, 5, 6, {'extra': 7})
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assert m.kwonly_plus_more(3, k=5, j=4, extra=6) == (3, 4, 5, {'extra': 6})
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assert m.kwonly_plus_more(2, k=3, extra=4) == (2, -1, 3, {'extra': 4})
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with pytest.raises(TypeError) as excinfo:
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assert m.kwonly_mixed(i=1) == (1,)
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assert "incompatible function arguments" in str(excinfo.value)
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with pytest.raises(RuntimeError) as excinfo:
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m.register_invalid_kwonly(m)
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assert msg(excinfo.value) == """
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arg(): cannot specify an unnamed argument after an kwonly() annotation
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"""
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@pytest.mark.xfail(pypy and sys.version_info < (3, 0),
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reason="PyPy2 doesn't seem to double count")
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def test_args_refcount():
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"""Issue/PR #1216 - py::args elements get double-inc_ref()ed when combined with regular
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arguments"""
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refcount = m.arg_refcount_h
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myval = 54321
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expected = refcount(myval)
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assert m.arg_refcount_h(myval) == expected
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assert m.arg_refcount_o(myval) == expected + 1
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assert m.arg_refcount_h(myval) == expected
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assert refcount(myval) == expected
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assert m.mixed_plus_args(1, 2.0, "a", myval) == (1, 2.0, ("a", myval))
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assert refcount(myval) == expected
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assert m.mixed_plus_kwargs(3, 4.0, a=1, b=myval) == (3, 4.0, {"a": 1, "b": myval})
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assert refcount(myval) == expected
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assert m.args_function(-1, myval) == (-1, myval)
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assert refcount(myval) == expected
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assert m.mixed_plus_args_kwargs(5, 6.0, myval, a=myval) == (5, 6.0, (myval,), {"a": myval})
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assert refcount(myval) == expected
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assert m.args_kwargs_function(7, 8, myval, a=1, b=myval) == \
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((7, 8, myval), {"a": 1, "b": myval})
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assert refcount(myval) == expected
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exp3 = refcount(myval, myval, myval)
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assert m.args_refcount(myval, myval, myval) == (exp3, exp3, exp3)
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assert refcount(myval) == expected
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# This function takes the first arg as a `py::object` and the rest as a `py::args`. Unlike the
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# previous case, when we have both positional and `py::args` we need to construct a new tuple
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# for the `py::args`; in the previous case, we could simply inc_ref and pass on Python's input
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# tuple without having to inc_ref the individual elements, but here we can't, hence the extra
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# refs.
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assert m.mixed_args_refcount(myval, myval, myval) == (exp3 + 3, exp3 + 3, exp3 + 3)
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assert m.class_default_argument() == "<class 'decimal.Decimal'>"
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