}

  public void testToMap_nullValue() {
    assertThrows(NullPointerException.class, () -> fluent(1, 2, 3).toMap(Functions.constant(null)));
  }

  public void testIndex() {
    ImmutableListMultimap<Integer, String> expected =
        ImmutableListMultimap.<Integer, String>builder()
            .putAll(3, "one", "two")
            .put(5, "three")
            .put(4, "four")

    multimap.putAll(Color.RED, asList(2, 7, 1, 8));
    SerializableTester.reserializeAndAssert(multimap);
    assertEquals(INT_COMPARATOR, multimap.valueComparator());
  }

  public void testIndex() {
    Multimap<String, Object> stringToObject =
        new ImmutableMultimap.Builder<String, Object>()
            .put("1", 1)
            .put("1", 1L)
            .put("1", "1")
            .put("2", 2)

    public void testDeleteByQuery() {
        // Create test data
        client.prepareIndex().setIndex(TEST_INDEX).setId("1").setSource("field", "value1").execute().actionGet();
        client.prepareIndex().setIndex(TEST_INDEX).setId("2").setSource("field", "value2").execute().actionGet();
        client.admin().indices().prepareRefresh(TEST_INDEX).execute().actionGet();

        // Delete by query

    private static OpenSearchRunner runner;
    private static Client client;
    private static SuggestSettings settings;
    private AnalyzerConverter converter;
    private static final String TEST_INDEX = "test_analyzer_index";
    private static final String SUGGEST_INDEX = ".suggest";

    @BeforeClass
    public static void beforeClass() throws Exception {
        runner = new OpenSearchRunner();

    public void testSetSettingsIndexName() {
        // Test setting index name with lowercase conversion
        SuggestSettingsBuilder result = builder.setSettingsIndexName("TEST_INDEX");
        assertEquals(builder, result); // Test method chaining
        assertEquals("test_index", builder.settingsIndexName);

        // Test setting index name with mixed case
        builder.setSettingsIndexName("TeSt_InDeX_NaMe");

        byte[] dest = new byte[5];

        // Expect IndexOutOfBoundsException from System.arraycopy
        assertThrows(IndexOutOfBoundsException.class, () -> {
            encodable.encode(dest, 3); // destIndex=3, len=3, dest.length=5. 3+3 > 5
        }, "Should throw IndexOutOfBoundsException if destination offset + length exceeds destination array bounds");
    }

    @Test
    void testEncodeNullSourceArray() {