Object[] expectedArray2 = expectModify ? target : starting;
    assertTrue(Arrays.equals(expectedArray1, array1));
    assertTrue(Arrays.equals(expectedArray2, array2));
  }

  public void testPrependZeroElements() {
    String[] result = ObjectArrays.concat("foo", new String[] {});
    assertThat(result).asList().contains("foo");
  }

  public void testPrependOneElement() {