1 files changed, 62 insertions, 0 deletions
diff --git a/t/unit-tests/u-string-list.c b/t/unit-tests/u-string-list.c
index f061a3694b..d4ba5f9fa5 100644
--- a/t/unit-tests/u-string-list.c
+++ b/t/unit-tests/u-string-list.c
@@ -163,3 +163,65 @@ void test_string_list__filter(void)
 
 	t_string_list_clear(&list, 0);
 }
+
+static void t_string_list_remove_duplicates(struct string_list *list, ...)
+{
+	struct string_list expected_strings = STRING_LIST_INIT_DUP;
+	va_list ap;
+
+	va_start(ap, list);
+	t_vcreate_string_list_dup(&expected_strings, 0, ap);
+	va_end(ap);
+
+	string_list_remove_duplicates(list, 0);
+	t_string_list_equal(list, &expected_strings);
+
+	string_list_clear(&expected_strings, 0);
+}
+
+void test_string_list__remove_duplicates(void)
+{
+	struct string_list list = STRING_LIST_INIT_DUP;
+
+	t_create_string_list_dup(&list, 0, NULL);
+	t_string_list_remove_duplicates(&list, NULL);
+
+	t_create_string_list_dup(&list, 0, "", NULL);
+	t_string_list_remove_duplicates(&list, "", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", NULL);
+	t_string_list_remove_duplicates(&list, "a", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", NULL);
+	t_string_list_remove_duplicates(&list, "a", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", "a", NULL);
+	t_string_list_remove_duplicates(&list, "a", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", "b", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "b", "b", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "b", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", "b", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "b", "b", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "b", "c", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", "b", "b", "c", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_create_string_list_dup(&list, 0, "a", "a", "a", "b", "b", "b",
+				 "c", "c", "c", NULL);
+	t_string_list_remove_duplicates(&list, "a", "b", "c", NULL);
+
+	t_string_list_clear(&list, 0);
+}