public void test_findCommonOverlap() { assertEquals(0, StringUtilities.findCommonOverlap("", "abcd")); assertEquals(3, StringUtilities.findCommonOverlap("abc", "abcd")); assertEquals(0, StringUtilities.findCommonOverlap("123456", "abcd")); assertEquals(3, StringUtilities.findCommonOverlap("123456xxx", "xxxabcd")); }