clio/tests/common/util/MockAssert.hpp

#pragma once

#include "util/Assert.hpp"  // IWYU pragma: keep

#include <gmock/gmock.h>
#include <gtest/gtest.h>

#include <string>
#include <string_view>

namespace common::util {
class WithMockAssert : virtual public testing::Test {
public:
    struct MockAssertException {
        std::string message;
    };

    WithMockAssert();
    ~WithMockAssert() override;

private:
    static void
    throwOnAssert(std::string_view m);
};

class WithMockAssertNoThrow : virtual public testing::Test {
public:
    ~WithMockAssertNoThrow() override;
};

namespace impl {
template <typename T>
struct MockGuard {
    T mock;
    ~MockGuard()
    {
        ::util::impl::OnAssert::resetAction();
    }
};
}  // namespace impl

}  // namespace common::util

#define EXPECT_CLIO_ASSERT_FAIL_WITH_MESSAGE(statement, message_regex)                          \
    if (dynamic_cast<common::util::WithMockAssert*>(this) != nullptr) {                         \
        EXPECT_THROW(                                                                           \
            {                                                                                   \
                try {                                                                           \
                    statement;                                                                  \
                } catch (common::util::WithMockAssert::MockAssertException const& e) {          \
                    EXPECT_THAT(e.message, testing::ContainsRegex(message_regex));              \
                    throw;                                                                      \
                }                                                                               \
            },                                                                                  \
            common::util::WithMockAssert::MockAssertException                                   \
        );                                                                                      \
    } else if (dynamic_cast<common::util::WithMockAssertNoThrow*>(this) != nullptr) {           \
        using MockGuardType = common::util::impl::MockGuard<                                    \
            testing::StrictMock<testing::MockFunction<void(std::string_view)>>>;                \
        auto mockGuard = std::make_shared<MockGuardType>();                                     \
        ::util::impl::OnAssert::setAction([mockGuard](std::string_view m) {                     \
            mockGuard->mock.Call(m);                                                            \
        });                                                                                     \
        EXPECT_CALL(mockGuard->mock, Call(testing::ContainsRegex(message_regex)));              \
        statement;                                                                              \
    } else {                                                                                    \
        std::cerr << "EXPECT_CLIO_ASSERT_FAIL_WITH_MESSAGE() can be used only inside test body" \
                  << std::endl;                                                                 \
        std::terminate();                                                                       \
    }

#define EXPECT_CLIO_ASSERT_FAIL(statement) EXPECT_CLIO_ASSERT_FAIL_WITH_MESSAGE(statement, ".*")