@Test(expected = NullPointerException.class)
public void testMergeIfOneOFTheArraysIsNull() throws Exception {

	String[] one = new String[] { "one", "two" };
	String[] two = new String[] { "three", "four" };
	String[] result = new String[] { "one", "two", "three", "four" };
	Assert.assertEquals(result, ArrayUtils.mergeArrays(one, null));
	Assert.assertEquals(0, ArrayUtils.mergeArrays(null, null).length);
	Assert.assertEquals(two, ArrayUtils.mergeArrays(null, two));
}