Verify fork() support

The tests will not pass if libcheck is compiled with CF_FORK=no because they have been written assuming CF_FORK=yes. Each test inherits a pristine copy of global state in the forked child process. Mutations of global state by the child process are not propagated forward to the next test. This commit exposes the implicit assumption of CF_FORK=yes as an explicit test. Signed-off-by: Earl Chew <[email protected]> Signed-off-by: Jan Kiszka <[email protected]>
siemens · Jul 24, 2023 · 9758b28 · 9758b28
1 parent a621bd9
commit 9758b28
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/tools/tests/test_main.c b/tools/tests/test_main.c
@@ -13,24 +13,29 @@
  */
 
 #include <stdlib.h>
+#include <stdio.h>
 #include <check.h>
 #include <fff.h>
 
 extern Suite *ebg_test_suite(void);
 
 int main(void)
 {
-	int number_failed;
+	int number_failed = 1;
 
 	Suite *s;
 	SRunner *sr;
 
 	s = ebg_test_suite();
 	sr = srunner_create(s);
 
-	srunner_run_all(sr, CK_NORMAL);
-	number_failed = srunner_ntests_failed(sr);
-	srunner_free(sr);
+	if (srunner_fork_status(sr) != CK_FORK) {
+		fprintf(stderr, "Tests assume fork() support");
+	} else {
+		srunner_run_all(sr, CK_NORMAL);
+		number_failed = srunner_ntests_failed(sr);
+		srunner_free(sr);
+	}
 
 	return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
 }