@Test
public void testDistance() {

  Assert.assertEquals(3, CharSequences.distance("abc", "abcdef"));
  Assert.assertEquals(3, CharSequences.distance("def", "abcdef"));
  Assert.assertEquals(1, CharSequences.distance("abc", "bc"));
  Assert.assertEquals(3, CharSequences.distance("abc", "def"));
  Assert.assertEquals(1, CharSequences.distance("zoltran", "zoltan"));
}