Google Test EXPECT_SIGNAL macro

expect_signal.cpp

#include <setjmp.h>
#include <signal.h>

#include <gtest/gtest.h>

static sigjmp_buf jmp_expect_signal;

static void handler(int) { siglongjmp(jmp_expect_signal, 1); }

#define EXPECT_SIGNAL(CODE, SIGNO)                                             \
	{                                                                          \
		sighandler_t old_handler = signal(SIGNO, handler);                     \
		bool triggered = sigsetjmp(jmp_expect_signal, true);                   \
		if (!triggered) {                                                      \
			CODE;                                                              \
		}                                                                      \
		EXPECT_TRUE(triggered);                                                \
		signal(SIGNO, old_handler);                                            \
	}