This patch adds tests for the strsep() function.

Signed-off-by: Andre Muezerie <andre...@linux.microsoft.com>
---
 app/test/meson.build   |   1 +
 app/test/test_strsep.c | 108 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 app/test/test_strsep.c

diff --git a/app/test/meson.build b/app/test/meson.build
index b6285a6b45..ec5a1fbae3 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -184,6 +184,7 @@ source_file_deps = {
     'test_stack.c': ['stack'],
     'test_stack_perf.c': ['stack'],
     'test_string_fns.c': [],
+    'test_strsep.c': [],
     'test_table.c': ['table', 'pipeline', 'port'],
     'test_table_acl.c': ['net', 'table', 'pipeline', 'port'],
     'test_table_combined.c': ['table', 'pipeline', 'port'],
diff --git a/app/test/test_strsep.c b/app/test/test_strsep.c
new file mode 100644
index 0000000000..19df8f31ee
--- /dev/null
+++ b/app/test/test_strsep.c
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (C) 2025 Microsoft Corporation
+ */
+
+#include <string.h>
+#include <rte_os_shim.h>
+
+#include "test.h"
+
+static int
+test_strsep_helper(const char *str, const char *delim,
+                  const char * const expected_tokens[], size_t 
expected_tokens_count)
+{
+       char *s = str != NULL ? strdup(str) : NULL;
+       const char *token;
+       for (size_t i = 0; i < expected_tokens_count; i++) {
+               token = strsep(&s, delim);
+               if (token == NULL) {
+                       printf("Expected token '%s', got NULL\n", 
expected_tokens[i]);
+                       free(s);
+                       return TEST_FAILED;
+               }
+               if (strcmp(expected_tokens[i], token) != 0) {
+                       printf("Expected '%s', got '%s'\n", expected_tokens[i], 
token);
+                       free(s);
+                       return TEST_FAILED;
+               }
+       }
+       /* Check that there are no more tokens left */
+       token = strsep(&s, delim);
+       if (token != NULL) {
+               printf("Expected NULL, got '%s'\n", token);
+               free(s);
+               return TEST_FAILED;
+       }
+       free(s);
+       return TEST_SUCCESS;
+}
+
+static int
+test_strsep_single_delimiter(void)
+{
+       const char *str = "hello,world";
+       const char *delim = ",";
+       static const char * const expected_tokens[] = { "hello", "world" };
+       const size_t expected_tokens_count = RTE_DIM(expected_tokens);
+       return test_strsep_helper(str, delim, expected_tokens, 
expected_tokens_count);
+}
+
+static int
+test_strsep_multiple_delimiters(void)
+{
+       const char *str = "hello,world;this:is;a:test";
+       const char *delim = ",;:";
+       static const char * const expected_tokens[] = {"hello", "world", 
"this", "is", "a", "test"};
+       const size_t expected_tokens_count = RTE_DIM(expected_tokens);
+       return test_strsep_helper(str, delim, expected_tokens, 
expected_tokens_count);
+}
+
+static int
+test_strsep_string_with_no_delimiters(void)
+{
+       const char *str = "helloworld";
+       const char *delim = ",";
+       static const char * const expected_tokens[] = {"helloworld"};
+       const size_t expected_tokens_count = RTE_DIM(expected_tokens);
+       return test_strsep_helper(str, delim, expected_tokens, 
expected_tokens_count);
+}
+
+static int
+test_strsep_empty_string(void)
+{
+       const char *str = "";
+       const char *delim = ",";
+       static const char * const expected_tokens[] = {""};
+       const size_t expected_tokens_count = RTE_DIM(expected_tokens);
+       return test_strsep_helper(str, delim, expected_tokens, 
expected_tokens_count);
+}
+
+static int
+test_strsep_null(void)
+{
+       const char *str = NULL;
+       const char *delim = ",";
+       static const char * const expected_tokens[] = {""};
+       const size_t expected_tokens_count = 0;
+       return test_strsep_helper(str, delim, expected_tokens, 
expected_tokens_count);
+}
+
+static struct unit_test_suite test_suite = {
+       .suite_name = "Strsep test suite",
+       .unit_test_cases = {
+               TEST_CASE(test_strsep_single_delimiter),
+               TEST_CASE(test_strsep_multiple_delimiters),
+               TEST_CASE(test_strsep_string_with_no_delimiters),
+               TEST_CASE(test_strsep_empty_string),
+               TEST_CASE(test_strsep_null),
+               TEST_CASES_END()
+       }
+};
+
+static int
+test_strsep(void)
+{
+       return unit_test_suite_runner(&test_suite);
+}
+
+REGISTER_FAST_TEST(strsep_autotest, true, true, test_strsep);
-- 
2.49.0.vfs.0.3

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