PrintWriter w = new PrintWriter(Files.newWriter(temp, UTF_8));
    w.println("hello");
    w.println("");
    w.println(" world  ");
    w.println("");
    w.close();

    assertEquals("hello", Files.readFirstLine(temp, UTF_8));
    assertEquals(ImmutableList.of("hello", "", " world  ", ""), Files.readLines(temp, UTF_8));

    assertTrue(temp.delete());
  }

    mac.init(SHA1_KEY);
    mac.update("hello".getBytes(UTF_8));
    mac.update("world".getBytes(UTF_8));

    assertEquals(
        HashCode.fromBytes(mac.doFinal()),
        Hashing.hmacSha1(SHA1_KEY)
            .newHasher()
            .putString("hello", UTF_8)
            .putString("world", UTF_8)
            .hash());
  }

  public void testMultipleUpdatesDoFinal() throws Exception {

              index++;
            }
            return index;
          }
        };
    assertThat(e.escape("\0HeLLo \uD800\uDC00 WorlD!\n"))
        .isEqualTo("\0HELLO \uD800\uDC00 WORLD!\n");
  }

  public void testCodePointAt_indexOutOfBoundsException() {
    assertThrows(
        IndexOutOfBoundsException.class, () -> UnicodeEscaper.codePointAt("Testing...", 4, 2));

              index++;
            }
            return index;
          }
        };
    assertThat(e.escape("\0HeLLo \uD800\uDC00 WorlD!\n"))
        .isEqualTo("\0HELLO \uD800\uDC00 WORLD!\n");
  }

  public void testCodePointAt_indexOutOfBoundsException() {
    assertThrows(
        IndexOutOfBoundsException.class, () -> UnicodeEscaper.codePointAt("Testing...", 4, 2));

    /** */
    public int intField;

    /** */
    public String stringField;

    /** */
    public static final int INT_DATA = 987654321;

    /** */
    public static final String STRING_DATA = "Hello World!";

    /**
     * @throws Exception
     */
    @Test
    public void testGet() throws Exception {
        final Field field = getClass().getField("objectField");

    }

    @Test
    public void testGetContentAsStringWithCache() throws IOException {
        CurlResponse response = new CurlResponse();
        response.setEncoding("UTF-8");
        String testContent = "Hello, World!";
        byte[] data = testContent.getBytes("UTF-8");
        ContentCache cache = new ContentCache(data);
        response.setContentCache(cache);

        String content = response.getContentAsString();

    PrintWriter w = new PrintWriter(Files.newWriter(temp, UTF_8));
    w.println("hello");
    w.println("");
    w.println(" world  ");
    w.println("");
    w.close();

    assertEquals("hello", Files.readFirstLine(temp, UTF_8));
    assertEquals(ImmutableList.of("hello", "", " world  ", ""), Files.readLines(temp, UTF_8));

    assertTrue(temp.delete());
  }

        // Test quote functionality through the builder behavior
        assertEquals("test", getQuery("test", new String[0], Collections.emptyMap(), Collections.emptyMap(), false));
        assertEquals("hello world", getQuery("hello world", new String[0], Collections.emptyMap(), Collections.emptyMap(), false));
    }

    public void test_escapeQuery() {
        // Test escaping functionality through escape parameter

        ranges = data.ranges,
        mappings = data.mappings,
      )
  }

  @Test fun regularMappings() {
    assertThat("hello".map()).isEqualTo("hello")
    assertThat("hello-world".map()).isEqualTo("hello-world")
    assertThat("HELLO".map()).isEqualTo("hello")
    assertThat("Hello".map()).isEqualTo("hello")

    // These compound characters map their its components.
    assertThat("¼".map()).isEqualTo("1⁄4")

        String testValue = "HELLO WORLD";
        OptionalEntity<String> result = OptionalUtil.ofNullable(testValue);

        assertTrue(result.isPresent());

        // Test that we can chain operations
        String processed = result.map(s -> s.toLowerCase()).orElse("default");

        assertEquals("hello world", processed);

        // Test with null value