Import of the watch repository from Pebble

tests/libc/string/test_strcat.c

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+#include "clar.h"
+
+// "Define" libc functions we're testing
+#include "pblibc_private.h"
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+//! Tests
+
+void test_strcat__basic(void) {
+  char destbuf[9] = "hi";
+  char expectbuf[9] = "hilarity";
+  strcat(destbuf, "larity");
+  cl_assert_equal_m(expectbuf, destbuf, 9);
+}
+
+void test_strcat__weird(void) {
+  char destbuf[9] = "hi\0five";
+  char expectbuf[9] = "hilarity";
+  strcat(destbuf, "larity");
+  cl_assert_equal_m(expectbuf, destbuf, 9);
+}
+
+void test_strcat__return(void) {
+  char destbuf[9] = "hi";
+  char expectbuf[9] = "hilarity";
+  cl_assert_equal_p(strcat(destbuf, "larity"), destbuf);
+}
+
+void test_strcat__n_basic(void) {
+  char destbuf[9] = "hi";
+  char expectbuf[9] = "hilarity";
+  strncat(destbuf, "larity", 6);
+  cl_assert_equal_m(expectbuf, destbuf, 9);
+}
+
+void test_strcat__n_overlarge(void) {
+  char destbuf[9] = "hi";
+  char expectbuf[9] = "hilariou";
+  strncat(destbuf, "lariousness", 6);
+  cl_assert_equal_m(expectbuf, destbuf, 9);
+}
+
+void test_strcat__n_weird(void) {
+  char destbuf[9] = "hi\0five";
+  char expectbuf[9] = "hilariou";
+  strncat(destbuf, "lariousness", 6);
+  cl_assert_equal_m(expectbuf, destbuf, 9);
+}
+
+void test_strcat__n_return(void) {
+  char destbuf[9] = "hi";
+  char expectbuf[9] = "hilarity";
+  cl_assert_equal_p(strncat(destbuf, "larity", 6), destbuf);
+}