Add testcase for too many elements in tokenize_string() input

src/test/test_parsecommon.c

@@ -109,6 +109,37 @@ test_parsecommon_tokenize_string_min_cnt(void *arg)
   return;
 }
 
+static void
+test_parsecommon_tokenize_string_max_cnt(void *arg)
+{
+  memarea_t *area = memarea_new();
+  smartlist_t *tokens = smartlist_new();
+
+  (void)arg;
+
+  token_rule_t table[] = {
+          T01("uptime", K_UPTIME, EQ(1), NO_OBJ),
+          T01("hibernating", K_HIBERNATING, GE(1), NO_OBJ),
+          END_OF_TABLE,
+  };
+
+  // "uptime" expected once, but occurs twice in input.
+  char *str = tor_strdup(
+                  "uptime 1024\nuptime 2048\nhibernating 0\n");
+
+  int retval =
+  tokenize_string(area, str, NULL,
+                  tokens, table, 0);
+
+  tt_int_op(retval, OP_EQ, -1);
+
+ done:
+  tor_free(str);
+  memarea_drop_all(area);
+  smartlist_free(tokens);
+  return;
+}
+
 static void
 test_parsecommon_get_next_token_success(void *arg)
 {
@@ -456,6 +487,7 @@ struct testcase_t parsecommon_tests[] = {
   PARSECOMMON_TEST(tokenize_string_null),
   PARSECOMMON_TEST(tokenize_string_multiple_lines),
   PARSECOMMON_TEST(tokenize_string_min_cnt),
+  PARSECOMMON_TEST(tokenize_string_max_cnt),
   PARSECOMMON_TEST(get_next_token_success),
   PARSECOMMON_TEST(get_next_token_concat_args),
   PARSECOMMON_TEST(get_next_token_parse_keys),