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744fd91d0b
A challenge for getting LibTest working on Windows has always been CrashTest. It implements death tests similar to Google Test where a child process is cloned to invoke the expression that should abort/terminate the program. Then the exit code of the child is used by the parent test process to verify if the application correctly aborted/terminated due to invoking the expression. The problem was that finding an equivalent way to port Crash::run() to Windows was not looking very likely as publicly exposed Win32/ Native APIs have no equivalent to fork(); however, Windows actually does have native support for process cloning via undocumented NT APIs that clever people reverse engineered and published, see `NtCreateUserProcess()`. All that being said, this `EXPECT_DEATH()` implementation avoids needing to use a child process in general, allowing us to remove CrashTest in favour of a single cross-platform solution for death tests.
48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
/*
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* Copyright (c) 2025, ayeteadoe <ayeteadoe@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/Macros.h>
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namespace Test {
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static jmp_buf g_assert_jmp_buf = {};
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static bool g_assert_jmp_buf_valid = false;
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jmp_buf& assertion_jump_buffer() { return g_assert_jmp_buf; }
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void set_assertion_jump_validity(bool validity)
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{
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g_assert_jmp_buf_valid = validity;
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}
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static bool is_assertion_jump_valid()
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{
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return g_assert_jmp_buf_valid;
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}
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static void assertion_handler_impl(char const*)
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{
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if (is_assertion_jump_valid()) {
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set_assertion_jump_validity(false);
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LIBTEST_LONGJMP(assertion_jump_buffer(), 1); /* NOLINT(cert-err52-cpp, bugprone-setjmp-longjmp) Isolated to test infrastructure and allows us to not depend on spawning child processes for death tests */
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}
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// Fall through to default assertion handler
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}
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}
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#if defined(AK_OS_WINDOWS)
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# define EXPORT __declspec(dllexport)
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#else
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# define EXPORT __attribute__((visibility("default")))
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#endif
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extern "C" EXPORT void ak_assertion_handler(char const* message);
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void ak_assertion_handler(char const* message)
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{
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::Test::assertion_handler_impl(message);
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}
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