public void DiffXIndexTest()
{
diff_match_patchTest dmp = new diff_match_patchTest();
// Translate a location in text1 to text2.
List<Diff> diffs = new List<Diff> {
new Diff(Operation.DELETE, "a"),
new Diff(Operation.INSERT, "1234"),
new Diff(Operation.EQUAL, "xyz")};
Assert.AreEqual(5, dmp.DiffXIndex(diffs, 2), "DiffXIndex: Translation on equality.");
diffs = new List<Diff> {
new Diff(Operation.EQUAL, "a"),
new Diff(Operation.DELETE, "1234"),
new Diff(Operation.EQUAL, "xyz")};
Assert.AreEqual(1, dmp.DiffXIndex(diffs, 3), "DiffXIndex: Translation on deletion.");
}