lib/timeutils: parse_timestamp: add unittests

Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>

lib/timeutils.c

@@ -580,16 +580,65 @@ time_t timegm(struct tm *tm)
 
 #ifdef TEST_PROGRAM_TIMEUTILS
 
+static int run_unittest_timestamp(void)
+{
+	int rc = EXIT_SUCCESS;
+	time_t reference = 1674180427;
+	static const struct testcase {
+		const char * const input;
+		usec_t expected;
+	} testcases[] = {
+		{ "2012-09-22 16:34:22", 1348331662000000 },
+		{ "@1348331662"        , 1348331662000000 },
+		{ "2012-09-22 16:34"   , 1348331640000000 },
+		{ "2012-09-22"         , 1348272000000000 },
+		{ "16:34:22"           , 1674232462000000 },
+		{ "16:34"              , 1674232440000000 },
+		{ "now"                , 1674180427000000 },
+		{ "yesterday"          , 1674086400000000 },
+		{ "today"              , 1674172800000000 },
+		{ "tomorrow"           , 1674259200000000 },
+		{ "+5min"              , 1674180727000000 },
+		{ "-5days"             , 1673748427000000 },
+	};
+
+	if (unsetenv("TZ"))
+		rc = EXIT_FAILURE;
+	tzset();
+
+	for (size_t i = 0; i < ARRAY_SIZE(testcases); i++) {
+		struct testcase t = testcases[i];
+		usec_t result;
+		int r = parse_timestamp_reference(reference, t.input, &result);
+		if (r) {
+			fprintf(stderr, "Could not parse '%s'\n", t.input);
+			rc = EXIT_FAILURE;
+		}
+
+		if (result != t.expected) {
+			fprintf(stderr, "#%02zu %-25s: %"PRId64" != %"PRId64"\n",
+				i, t.input, result, t.expected);
+			rc = EXIT_FAILURE;
+		}
+	}
+
+	return rc;
+}
+
 int main(int argc, char *argv[])
 {
 	struct timeval tv = { 0 };
 	char buf[ISO_BUFSIZ];
 
 	if (argc < 2) {
-		fprintf(stderr, "usage: %s [<time> [<usec>]] | [--timestamp <str>]\n", argv[0]);
+		fprintf(stderr, "usage: %s [<time> [<usec>]] | [--timestamp <str>] | [--unittest-timestamp]\n", argv[0]);
 		exit(EXIT_FAILURE);
 	}
 
+	if (strcmp(argv[1], "--unittest-timestamp") == 0) {
+		return run_unittest_timestamp();
+	}
+
 	if (strcmp(argv[1], "--timestamp") == 0) {
 		usec_t usec = 0;
 

tests/commands.sh

@@ -47,6 +47,7 @@ TS_HELPER_LAST_FUZZ="${ts_helpersdir}test_last_fuzz"
 TS_HELPER_MKFDS="${ts_helpersdir}test_mkfds"
 TS_HELPER_BLKID_FUZZ="${ts_helpersdir}test_blkid_fuzz"
 TS_HELPER_PROCFS="${ts_helpersdir}test_procfs"
+TS_HELPER_TIMEUTILS="${ts_helpersdir}test_timeutils"
 
 # paths to commands
 TS_CMD_ADDPART=${TS_CMD_ADDPART:-"${ts_commandsdir}addpart"}

tests/ts/lib/timeutils

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2023 Thomas Weißschuh <thomas@t-8ch.de>
+#
+# This file may be distributed under the terms of the
+# GNU Lesser General Public License.
+#
+TS_TOPDIR="${0%/*}/../.."
+TS_DESC="timeutils library"
+
+. "$TS_TOPDIR"/functions.sh
+ts_init "$*"
+
+ts_check_test_command "$TS_HELPER_TIMEUTILS"
+
+ts_init_subtest "timestamp"
+
+"$TS_HELPER_TIMEUTILS" --unittest-timestamp 2> "$TS_ERRLOG"
+
+ts_finalize_subtest
+
+ts_finalize