AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length);
    for (int i = 0; i < length; ++i) {
      assertEquals(null, refArray.get(i));
    }
    assertThrows(IndexOutOfBoundsException.class, () -> refArray.get(length));
  }

  public void testNewReferenceArray_withNegativeLength() throws Exception {
    assertThrows(NegativeArraySizeException.class, () -> Atomics.newReferenceArray(-1));
  }