4 files changed, 34 insertions, 0 deletions
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index 63d5e6d5f165..2b45ffa462a6 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -66,6 +66,7 @@ perf-y += dlfilter-test.o
 perf-y += sigtrap.o
 perf-y += event_groups.o
 perf-y += symbols.o
+perf-y += util.o
 
 ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc))
 perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 0ad18cf6dd22..cb6f1dd00dc4 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -123,6 +123,7 @@ static struct test_suite *generic_tests[] = {
 	&suite__sigtrap,
 	&suite__event_groups,
 	&suite__symbols,
+	&suite__util,
 	NULL,
 };
 
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index f33cfc3c19a4..b394f3ac2d66 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -145,6 +145,7 @@ DECLARE_SUITE(dlfilter);
 DECLARE_SUITE(sigtrap);
 DECLARE_SUITE(event_groups);
 DECLARE_SUITE(symbols);
+DECLARE_SUITE(util);
 
 /*
  * PowerPC and S390 do not support creation of instruction breakpoints using the
diff --git a/tools/perf/tests/util.c b/tools/perf/tests/util.c
new file mode 100644
index 000000000000..6366db5cbf8c
--- /dev/null
+++ b/tools/perf/tests/util.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "tests.h"
+#include "util/debug.h"
+
+#include <linux/compiler.h>
+#include <stdlib.h>
+#include <string2.h>
+
+static int test_strreplace(char needle, const char *haystack,
+			   const char *replace, const char *expected)
+{
+	char *new = strreplace_chars(needle, haystack, replace);
+	int ret = strcmp(new, expected);
+
+	free(new);
+	return ret == 0;
+}
+
+static int test__util(struct test_suite *t __maybe_unused, int subtest __maybe_unused)
+{
+	TEST_ASSERT_VAL("empty string", test_strreplace(' ', "", "123", ""));
+	TEST_ASSERT_VAL("no match", test_strreplace('5', "123", "4", "123"));
+	TEST_ASSERT_VAL("replace 1", test_strreplace('3', "123", "4", "124"));
+	TEST_ASSERT_VAL("replace 2", test_strreplace('a', "abcabc", "ef", "efbcefbc"));
+	TEST_ASSERT_VAL("replace long", test_strreplace('a', "abcabc", "longlong",
+							"longlongbclonglongbc"));
+
+	return 0;
+}
+
+DEFINE_SUITE("util", util);