1 files changed, 93 insertions, 0 deletions
diff --git a/lib/libc/tests/string/strverscmp_test.c b/lib/libc/tests/string/strverscmp_test.c
new file mode 100644
index 000000000000..fd6a2620cb48
--- /dev/null
+++ b/lib/libc/tests/string/strverscmp_test.c
@@ -0,0 +1,93 @@
+/*-
+* SPDX-License-Identifier: BSD-2-Clause
+* Copyright (c) 2022 Aymeric Wibo <obiwac@gmail.com>
+*/
+
+#include <atf-c.h>
+#include <string.h>
+
+static void
+check_all(size_t len, const char *ordered[len])
+{
+	const char *a, *b;
+
+	for (size_t i = 0; i < len; i++) {
+		for (size_t j = 0; j < len; j++) {
+			a = ordered[i];
+			b = ordered[j];
+
+			if (i == j)
+				ATF_CHECK_MSG(
+				    strverscmp(a, b) == 0,
+				    "strverscmp(\"%s\", \"%s\") == 0",
+				    a, b
+				);
+			else if (i < j)
+				ATF_CHECK_MSG(
+				    strverscmp(a, b) < 0,
+				    "strverscmp(\"%s\", \"%s\") < 0",
+				    a, b
+				);
+			else if (i > j)
+				ATF_CHECK_MSG(
+				    strverscmp(a, b) > 0,
+				    "strverscmp(\"%s\", \"%s\") > 0",
+				    a, b
+				);
+		}
+	}
+}
+
+#define	CHECK_ALL(...) do {                                     \
+	const char *ordered[] = { __VA_ARGS__ };                \
+	check_all(sizeof(ordered) / sizeof(*ordered), ordered); \
+} while (0)
+
+ATF_TC_WITHOUT_HEAD(strcmp_functionality);
+ATF_TC_BODY(strcmp_functionality, tc)
+{
+	CHECK_ALL("", "a", "b");
+}
+
+/* from Linux man page strverscmp(3) */
+
+ATF_TC_WITHOUT_HEAD(vers_ordering);
+ATF_TC_BODY(vers_ordering, tc)
+{
+	CHECK_ALL("000", "00", "01", "010", "09", "0", "1", "9", "10");
+}
+
+ATF_TC_WITHOUT_HEAD(natural_ordering);
+ATF_TC_BODY(natural_ordering, tc)
+{
+	CHECK_ALL("jan1", "jan2", "jan9", "jan10", "jan11", "jan19", "jan20");
+}
+
+/* https://sourceware.org/bugzilla/show_bug.cgi?id=9913 */
+
+ATF_TC_WITHOUT_HEAD(glibc_bug_9913);
+ATF_TC_BODY(glibc_bug_9913, tc)
+{
+	CHECK_ALL(
+	    "B0075022800016.gbp.corp.com",
+	    "B007502280067.gbp.corp.com",
+	    "B007502357019.GBP.CORP.COM"
+	);
+}
+
+ATF_TC_WITHOUT_HEAD(semver_ordering);
+ATF_TC_BODY(semver_ordering, tc)
+{
+	CHECK_ALL("2.6.20", "2.6.21");
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, strcmp_functionality);
+	ATF_TP_ADD_TC(tp, vers_ordering);
+	ATF_TP_ADD_TC(tp, natural_ordering);
+	ATF_TP_ADD_TC(tp, glibc_bug_9913);
+	ATF_TP_ADD_TC(tp, semver_ordering);
+
+	return (atf_no_error());
+}