}

    // --- getContentAsString() optimization tests ---

    @Test
    public void test_GetContentAsString_InMemoryCache() {
        // ## Arrange ##
        String content = "Hello, World!";
        CurlResponse response = new CurlResponse();
        response.setEncoding("UTF-8");

    public void test_UrlWithCurlyBraces() {
        // ## Arrange ##
        // URLs with curly braces (e.g., OpenSearch) should be accepted
        final CurlRequest request = new CurlRequest(Method.GET, "http://localhost:9200/{index}/_search");

        // ## Assert ##
        assertNotNull(request);
    }

    @Test
    public void test_UrlWithPipe() {
        // ## Arrange ##

            return new ByteArrayInputStream(new byte[100]); // dummy payload
        }
    }

    @Test
    public void test_TmpFileHasBeenDeletedAfterResponseWasClosed() throws Exception {
        // ## Arrange ##
        CurlRequest req = new MockCurlRequest(Curl.Method.POST, "http://dummy");
        req.threshold(0); // always create tmp file

        // ## Act ##
        long before = countTmpFiles();

    public void test_GetFactoryMethod() {
        // ## Arrange ##
        final String url = "http://example.com";

        // ## Act ##
        final CurlRequest request = Curl.get(url);

        // ## Assert ##
        assertNotNull(request);
        assertEquals(Method.GET, request.method());
    }

    @Test
    public void test_PostFactoryMethod() {
        // ## Arrange ##
        final String url = "http://example.com";

    @Test
    public void testIsInMemory_WithByteArray() {
        // ## Arrange ##
        ContentCache cache = new ContentCache("test".getBytes());

        // ## Assert ##
        assertTrue(cache.isInMemory());
    }

    @Test
    public void testIsInMemory_WithFile() throws IOException {
        // ## Arrange ##
        File tmpFile = File.createTempFile("cache-test-", ".tmp");

        assertTrue(file1.exists());
        cos.close();
    }

    @Test
    public void testCloseWithAlreadyDeletedFile() throws IOException {
        // ## Arrange ##
        // Write data exceeding threshold to force file creation, then delete the file
        // before close() - close() should handle this gracefully (log warning, not throw)

   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(Collection<T> collection) {
    // return collection::iterator;
    return new Iterable<T>() {
      @Override
      public Iterator<T> iterator() {

   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(Collection<T> collection) {
    // return collection::iterator;
    return new Iterable<T>() {
      @Override
      public Iterator<T> iterator() {

      <resource>
        <directory>src</directory>
      </resource>
      <!-- src-super is copied to guava-gwt-sources (so that we can strip its @Nullable annotations), so we don't need to list it here. We may want to arrange something similar for test-super someday. -->
      <!-- TODO(cpovirk): Why do we have separate src and src-super directories, anyway? -->
      <resource>

   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(Collection<T> collection) {
    // return collection::iterator;
    return new Iterable<T>() {
      @Override
      public Iterator<T> iterator() {