test_time.c: Tolerate DST transitions

When test_timezone_watch runs very near a DST transition,
two time zones that would otherwise be expected to report the same
time can differ because of the DST transition.

Instead of having the test fail when this happens, report the
times, time zones, and dst flags.

ASTERISK-29722

Change-Id: Id59bdac8b277e14343ccdf0c99b89e92f79f316a

tests/test_time.c

@@ -91,8 +91,12 @@ AST_TEST_DEFINE(test_timezone_watch)
 			ast_localtime(&tv, &atm[i], tzfile);
 			if (i != 0) {
 				if (atm[i].tm_hour == atm[i - 1].tm_hour) {
-					res = AST_TEST_FAIL;
-					ast_test_status_update(test, "Failed %s test: %d(%s) = %d(%s)\n", type == 0 ? "deletion" : "symlink", atm[i].tm_hour, zones[i], atm[i-1].tm_hour, zones[i-1]);
+					if (atm[i].tm_isdst == atm[i - 1].tm_isdst) {
+						res = AST_TEST_FAIL;
+						ast_test_status_update(test, "Failed %s test: %d(%s) = %d(%s)\n", type == 0 ? "deletion" : "symlink", atm[i].tm_hour, zones[i], atm[i-1].tm_hour, zones[i-1]);
+					} else {
+						ast_log(LOG_WARNING, "DST transition during %s test: %d(%s/%d) != %d(%s/%d)\n", type == 0 ? "deletion" : "symlink", atm[i].tm_hour, zones[i], atm[i].tm_isdst, atm[i-1].tm_hour, zones[i-1], atm[i-1].tm_isdst);
+					}
 				}
 			}