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/*
* Copyright 2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <setjmp.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <cmocka.h>
#ifndef CRM_COMMON_UNITTEST_INTERNAL__H
#define CRM_COMMON_UNITTEST_INTERNAL__H
/* internal unit testing related utilities */
/* A cmocka-like assert macro for use in unit testing. This one verifies that
* an expression aborts through CRM_ASSERT, erroring out if that is not the case.
*
* This macro works by running the expression in a forked child process with core
* dumps disabled (CRM_ASSERT calls abort(), which will write out a core dump).
* The parent waits for the child to exit and checks why. If the child received
* a SIGABRT, the test passes. For all other cases, the test fails.
*/
#define pcmk__assert_asserts(expr) \
do { \
pid_t p = fork(); \
if (p == 0) { \
struct rlimit cores = { 0, 0 }; \
setrlimit(RLIMIT_CORE, &cores); \
expr; \
_exit(0); \
} else if (p > 0) { \
int wstatus = 0; \
if (waitpid(p, &wstatus, 0) == -1) { \
fail_msg("waitpid failed"); \
} \
if (!(WIFSIGNALED(wstatus) && WTERMSIG(wstatus) == SIGABRT)) { \
fail_msg("expr terminated without asserting"); \
} \
} else { \
fail_msg("unable to fork for assert test"); \
} \
} while (0);
#endif /* CRM_COMMON_UNITTEST_INTERNAL__H */

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