public void diff_commonSuffixTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
// Detect any common suffix.
// Null case.
Assert.AreEqual(0, dmp.DiffCommonSuffix("abc", "xyz"));
// Non-null case.
Assert.AreEqual(4, dmp.DiffCommonSuffix("abcdef1234", "xyz1234"));
// Whole case.
Assert.AreEqual(4, dmp.DiffCommonSuffix("1234", "xyz1234"));
}