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391c75447d
This udpates all the remaining tests to the new test suite code and comment styles started in #898. For the most part, the test coverage here is unchanged, with a few minor exceptions as noted below. - test_constants_and_functions: this adds more overload tests with overloads with different number of arguments for more comprehensive overload_cast testing. The test style conversion broke the overload tests under MSVC 2015, prompting the additional tests while looking for a workaround. - test_eigen: this dropped the unused functions `get_cm_corners` and `get_cm_corners_const`--these same tests were duplicates of the same things provided (and used) via ReturnTester methods. - test_opaque_types: this test had a hidden dependence on ExampleMandA which is now fixed by using the global UserType which suffices for the relevant test. - test_methods_and_attributes: this required some additions to UserType to make it usable as a replacement for the test's previous SimpleType: UserType gained a value mutator, and the `value` property is not mutable (it was previously readonly). Some overload tests were also added to better test overload_cast (as described above). - test_numpy_array: removed the untemplated mutate_data/mutate_data_t: the templated versions with an empty parameter pack expand to the same thing. - test_stl: this was already mostly in the new style; this just tweaks things a bit, localizing a class, and adding some missing `// test_whatever` comments. - test_virtual_functions: like `test_stl`, this was mostly in the new test style already, but needed some `// test_whatever` comments. This commit also moves the inherited virtual example code to the end of the file, after the main set of tests (since it is less important than the other tests, and rather length); it also got renamed to `test_inherited_virtuals` (from `test_inheriting_repeat`) because it tests both inherited virtual approaches, not just the repeat approach.
108 lines
3.6 KiB
Python
108 lines
3.6 KiB
Python
import pytest
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from pybind11_tests import callbacks as m
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def test_callbacks():
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from functools import partial
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def func1():
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return "func1"
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def func2(a, b, c, d):
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return "func2", a, b, c, d
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def func3(a):
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return "func3({})".format(a)
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assert m.test_callback1(func1) == "func1"
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assert m.test_callback2(func2) == ("func2", "Hello", "x", True, 5)
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assert m.test_callback1(partial(func2, 1, 2, 3, 4)) == ("func2", 1, 2, 3, 4)
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assert m.test_callback1(partial(func3, "partial")) == "func3(partial)"
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assert m.test_callback3(lambda i: i + 1) == "func(43) = 44"
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f = m.test_callback4()
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assert f(43) == 44
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f = m.test_callback5()
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assert f(number=43) == 44
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def test_bound_method_callback():
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# Bound Python method:
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class MyClass:
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def double(self, val):
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return 2 * val
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z = MyClass()
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assert m.test_callback3(z.double) == "func(43) = 86"
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z = m.CppBoundMethodTest()
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assert m.test_callback3(z.triple) == "func(43) = 129"
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def test_keyword_args_and_generalized_unpacking():
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def f(*args, **kwargs):
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return args, kwargs
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assert m.test_tuple_unpacking(f) == (("positional", 1, 2, 3, 4, 5, 6), {})
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assert m.test_dict_unpacking(f) == (("positional", 1), {"key": "value", "a": 1, "b": 2})
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assert m.test_keyword_args(f) == ((), {"x": 10, "y": 20})
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assert m.test_unpacking_and_keywords1(f) == ((1, 2), {"c": 3, "d": 4})
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assert m.test_unpacking_and_keywords2(f) == (
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("positional", 1, 2, 3, 4, 5),
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{"key": "value", "a": 1, "b": 2, "c": 3, "d": 4, "e": 5}
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)
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with pytest.raises(TypeError) as excinfo:
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m.test_unpacking_error1(f)
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assert "Got multiple values for keyword argument" in str(excinfo.value)
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with pytest.raises(TypeError) as excinfo:
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m.test_unpacking_error2(f)
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assert "Got multiple values for keyword argument" in str(excinfo.value)
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with pytest.raises(RuntimeError) as excinfo:
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m.test_arg_conversion_error1(f)
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assert "Unable to convert call argument" in str(excinfo.value)
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with pytest.raises(RuntimeError) as excinfo:
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m.test_arg_conversion_error2(f)
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assert "Unable to convert call argument" in str(excinfo.value)
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def test_lambda_closure_cleanup():
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m.test_cleanup()
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cstats = m.payload_cstats()
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assert cstats.alive() == 0
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assert cstats.copy_constructions == 1
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assert cstats.move_constructions >= 1
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def test_cpp_function_roundtrip():
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"""Test if passing a function pointer from C++ -> Python -> C++ yields the original pointer"""
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assert m.test_dummy_function(m.dummy_function) == "matches dummy_function: eval(1) = 2"
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assert (m.test_dummy_function(m.roundtrip(m.dummy_function)) ==
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"matches dummy_function: eval(1) = 2")
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assert m.roundtrip(None, expect_none=True) is None
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assert (m.test_dummy_function(lambda x: x + 2) ==
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"can't convert to function pointer: eval(1) = 3")
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with pytest.raises(TypeError) as excinfo:
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m.test_dummy_function(m.dummy_function2)
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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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m.test_dummy_function(lambda x, y: x + y)
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assert any(s in str(excinfo.value) for s in ("missing 1 required positional argument",
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"takes exactly 2 arguments"))
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def test_function_signatures(doc):
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assert doc(m.test_callback3) == "test_callback3(arg0: Callable[[int], int]) -> str"
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assert doc(m.test_callback4) == "test_callback4() -> Callable[[int], int]"
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def test_movable_object():
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assert m.callback_with_movable(lambda _: None) is True
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