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 ##

    }

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

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

            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();

    @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)

    //                                                                           =========
    /*
    @Test
    public void test_component() throws Exception {
        // ## Arrange ##
        String appWebPkg = ".app.web.";
        String actionSuffix = "Action";

        // ## Act ##
        policeStoryOfJavaClassChase((srcFile, clazz) -> {

    assertToStringWorks(
        CharMatcher.inRange('a', 'z')
            .or(CharMatcher.inRange('A', 'Z'))
            .or(CharMatcher.inRange('0', '9'))
            .or(CharMatcher.is('_')),
        "CharMatcher.inRange('\\u0061', '\\u007A')"
            + ".or(CharMatcher.inRange('\\u0041', '\\u005A'))"
            + ".or(CharMatcher.inRange('\\u0030', '\\u0039'))"
            + ".or(CharMatcher.is('\\u005F'))");

  public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range) {
    checkNotNull(range);
    if (range.isEmpty()) {
      return of();
    } else if (range.equals(Range.all())) {
      return all();
    } else {
      return new ImmutableRangeSet<>(ImmutableList.of(range));
    }
  }

  /** Returns an immutable range set containing the single range {@link Range#all()}. */
  @SuppressWarnings("unchecked")

  }

  /**
   * Returns an immutable range set containing the specified single range. If {@link Range#isEmpty()
   * range.isEmpty()}, this is equivalent to {@link ImmutableRangeSet#of()}.
   */
  public static <C extends Comparable> ImmutableRangeSet<C> of(Range<C> range) {
    checkNotNull(range);
    if (range.isEmpty()) {
      return of();
    } else if (range.equals(Range.all())) {
      return all();
    } else {

  private Graphs() {}

  // Graph query methods

  /**
   * Returns true if {@code graph} has at least one cycle. A cycle is defined as a non-empty subset
   * of edges in a graph arranged to form a path (a sequence of adjacent outgoing edges) starting
   * and ending with the same node.
   *
   * <p>This method will detect any non-empty cycle, including self-loops (a cycle of length 1).
   */