assertEquals(true, builder.initialSettings.get("key3"));

        // Test overwriting existing setting
        builder.addInitialSettings("key1", "newValue1");
        assertEquals(3, builder.initialSettings.size());
        assertEquals("newValue1", builder.initialSettings.get("key1"));
    }

    @Test
    public void testAddInitialSettingsWithNullValue() {
        // Test adding null value

        }
    }

    /**
     * Merges a frequency value from existing source with new value.
     */
    private static long mergeFrequency(final Map<String, Object> existingSource, final String fieldName, final long newValue) {
        final Object freqObj = existingSource.get(fieldName);
        if (freqObj == null) {
            return newValue;
        }

        assertEquals("value1", dataMap.get("key1"));

        // Add an array - should merge with existing value
        String[] newValues = new String[] { "value2", "value3" };
        transformer.putResultDataBody(dataMap, "key1", newValues);

        Object result = dataMap.get("key1");
        assertTrue(result instanceof Object[]);
        Object[] resultArray = (Object[]) result;

    value += delta;
  }

  public int addAndGet(int delta) {
    return value += delta;
  }

  public void set(int newValue) {
    value = newValue;
  }

  public int getAndSet(int newValue) {
    int result = value;
    value = newValue;
    return result;
  }

  @Override
  public int hashCode() {
    return value;
  }

  @Override

    String key = "key";
    long newValue = random.nextInt(MAX_ADDEND);
    for (int i = 0; i < ITERATIONS; i++) {
      long before = map.get(key);
      long result = map.put(key, newValue);
      long after = map.get(key);
      assertEquals(newValue, after);
      assertEquals(before, result);
      newValue += newValue;
    }
    assertEquals(1, map.size());

        assertThrows(UncheckedExecutionException.class, () -> cache.getUnchecked(new Object()));
    assertThat(expected).hasCauseThat().isEqualTo(cause);

    Object newValue = new Object();
    valueRef.set(newValue);
    assertThat(cache.getUnchecked(new Object())).isSameInstanceAs(newValue);
  }

  public void testGetUnchecked_unchecked() {
    RuntimeException cause = new RuntimeException();

   * Sets to the given value.
   *
   * @param newValue the new value
   */
  public final void set(double newValue) {
    long next = doubleToRawLongBits(newValue);
    value.set(next);
  }

  /**
   * Eventually sets to the given value.
   *
   * @param newValue the new value
   */
  public final void lazySet(double newValue) {
    long next = doubleToRawLongBits(newValue);
    value.lazySet(next);
  }

  /**

        V previousValue = oldValue.get();
        if (previousValue == null) {
          V newValue = loader.load(key);
          return set(newValue) ? futureValue : immediateFuture(newValue);
        }
        ListenableFuture<V> newValue = loader.reload(key, previousValue);
        if (newValue == null) {
          return immediateFuture(null);
        }

   *
   * @param i the index
   * @param newValue the new value
   */
  public final void set(int i, double newValue) {
    long next = doubleToRawLongBits(newValue);
    longs.set(i, next);
  }

  /**
   * Eventually sets the element at position {@code i} to the given value.
   *
   * @param i the index
   * @param newValue the new value
   */

    doTestSet(e3());
  }

  private void doTestSet(E newValue) {
    int index = aValidIndex();
    E initialValue = getList().get(index);
    assertEquals(
        "set(i, x) should return the old element at position i.",
        initialValue,
        getList().set(index, newValue));
    assertEquals("After set(i, x), get(i) should return x", newValue, getList().get(index));