test: add test_exec and check memory leaks

re_fhs_flush is used to cleanup OOM tests

Author: sreimers

test/test.c

@@ -387,6 +387,35 @@ static const struct test *find_test_int(const char *name)
 }
 
 
+static int test_exec(const struct test *test)
+{
+	if (!test)
+		return EINVAL;
+
+	struct memstat mstat_before;
+	struct memstat mstat_after;
+
+	mem_get_stat(&mstat_before);
+
+	int err = test->exec();
+	re_fhs_flush();
+
+	mem_get_stat(&mstat_after);
+
+	if (mstat_before.blocks_cur != mstat_after.blocks_cur) {
+		mem_debug();
+		re_assert(false && "Test leaks memory blocks");
+	}
+
+	if (mstat_before.bytes_cur != mstat_after.bytes_cur) {
+		mem_debug();
+		re_assert(false && "Test leaks memory bytes");
+	}
+
+	return err;
+}
+
+
 /**
  * Run a single testcase in OOM (Out-of-memory) mode.
  *
@@ -418,7 +447,7 @@ static int testcase_oom(const struct test *test, int levels, bool verbose)
 
 		mem_threshold_set(i);
 
-		err = test->exec();
+		err = test_exec(test);
 		if (err == 0) {
 			/* success, stop now */
 			break;
@@ -522,7 +551,7 @@ static int test_unit(const char *name, bool verbose)
 			goto out;
 		}
 
-		err = test->exec();
+		err = test_exec(test);
 		if (err) {
 			DEBUG_WARNING("%s: test failed (%m)\n", name, err);
 			goto out;
@@ -595,7 +624,7 @@ static int testcase_perf(const struct test *test, double *usec_avgp)
 	usec_start = tmr_jiffies_usec();
 	for (i = 1; i <= DRYRUN_MAX; i++) {
 
-		err = test->exec();
+		err = test_exec(test);
 		if (err)
 			return err;
 
@@ -613,7 +642,7 @@ static int testcase_perf(const struct test *test, double *usec_avgp)
 	/* now for the real measurement */
 	usec_start = tmr_jiffies_usec();
 	for (i=0; i<n; i++) {
-		err = test->exec();
+		err = test_exec(test);
 		if (err)
 			return err;
 	}
@@ -786,7 +815,7 @@ static int thread_handler(void *arg)
 		return 0;
 	}
 
-	err = thr->test->exec();
+	err = test_exec(thr->test);
 	if (err) {
 		if (err == ESKIPPED) {
 			err = 0;
@@ -1100,7 +1129,7 @@ int test_integration(const char *name, bool verbose)
 		(void)re_fprintf(stderr, "  %-24s: ", test->name);
 
 		if (test->exec)
-			err = test->exec();
+			err = test_exec(test);
 
 		if (err)
 			DEBUG_WARNING("  %-24s: NOK: %m\n", test->name, err);
@@ -1119,7 +1148,7 @@ int test_integration(const char *name, bool verbose)
 		(void)re_fprintf(stderr, "  %-32s: ", test->name);
 
 		if (test->exec)
-			err = test->exec();
+			err = test_exec(test);
 
 		if (err) {
 			DEBUG_WARNING("  %-24s: NOK: %m\n", test->name, err);