pybind11/tests/pybind11_tests.h

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#pragma once
#include <pybind11/eval.h>
#include <pybind11/pybind11.h>
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namespace py = pybind11;
using namespace pybind11::literals;
class test_initializer {
using Initializer = void (*)(py::module_ &);
public:
explicit test_initializer(Initializer init);
test_initializer(const char *submodule_name, Initializer init);
};
#define TEST_SUBMODULE(name, variable) \
void test_submodule_##name(py::module_ &); \
test_initializer name(#name, test_submodule_##name); \
void test_submodule_##name(py::module_ &(variable))
/// Dummy type which is not exported anywhere -- something to trigger a conversion error
struct UnregisteredType {};
/// A user-defined type which is exported and can be used by any test
class UserType {
public:
UserType() = default;
explicit UserType(int i) : i(i) {}
int value() const { return i; }
Update all remaining tests to new test styles 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.
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void set(int set) { i = set; }
private:
int i = -1;
};
/// Like UserType, but increments `value` on copy for quick reference vs. copy tests
class IncType : public UserType {
public:
using UserType::UserType;
IncType() = default;
IncType(const IncType &other) : IncType(other.value() + 1) {}
IncType(IncType &&) = delete;
IncType &operator=(const IncType &) = delete;
IncType &operator=(IncType &&) = delete;
};
/// A simple union for basic testing
union IntFloat {
int i;
float f;
};
/// Custom cast-only type that casts to a string "rvalue" or "lvalue" depending on the cast
/// context. Used to test recursive casters (e.g. std::tuple, stl containers).
struct RValueCaster {};
PYBIND11_NAMESPACE_BEGIN(pybind11)
PYBIND11_NAMESPACE_BEGIN(detail)
template <>
class type_caster<RValueCaster> {
public:
PYBIND11_TYPE_CASTER(RValueCaster, const_name("RValueCaster"));
static handle cast(RValueCaster &&, return_value_policy, handle) {
return py::str("rvalue").release();
}
static handle cast(const RValueCaster &, return_value_policy, handle) {
return py::str("lvalue").release();
}
};
PYBIND11_NAMESPACE_END(detail)
PYBIND11_NAMESPACE_END(pybind11)
template <typename F>
void ignoreOldStyleInitWarnings(F &&body) {
py::exec(R"(
message = "pybind11-bound class '.+' is using an old-style placement-new '(?:__init__|__setstate__)' which has been deprecated"
import warnings
with warnings.catch_warnings():
warnings.filterwarnings("ignore", message=message, category=FutureWarning)
body()
)",
py::dict(py::arg("body") = py::cpp_function(body)));
}