package diffutils;

import difflib.DiffUtils;

import difflib.Patch;

import difflib.PatchFailedException;

import junit.framework.TestCase;

import java.util.Arrays;

import java.util.List;

public class PatchTest extends TestCase {

public void testPatch_Insert() {

final List<String> insertTest_from = Arrays.asList("hhh");

final List<String> insertTest_to = Arrays.asList("hhh", "jjj", "kkk", "lll");

final Patch<String> patch = DiffUtils.diff(insertTest_from, insertTest_to);

try {

assertEquals(insertTest_to, DiffUtils.patch(insertTest_from, patch));

} catch (PatchFailedException e) {

fail(e.getMessage());

}

}

public void testPatch_Delete() {

final List<String> deleteTest_from = Arrays.asList("ddd", "fff", "ggg", "hhh");

final List<String> deleteTest_to = Arrays.asList("ggg");

final Patch<String> patch = DiffUtils.diff(deleteTest_from, deleteTest_to);

try {

assertEquals(deleteTest_to, DiffUtils.patch(deleteTest_from, patch));

} catch (PatchFailedException e) {

fail(e.getMessage());

}

}

public void testPatch_Change() {

final List<String> changeTest_from = Arrays.asList("aaa", "bbb", "ccc", "ddd");

final List<String> changeTest_to = Arrays.asList("aaa", "bxb", "cxc", "ddd");

final Patch<String> patch = DiffUtils.diff(changeTest_from, changeTest_to);

try {

assertEquals(changeTest_to, DiffUtils.patch(changeTest_from, patch));

} catch (PatchFailedException e) {

fail(e.getMessage());

}

}

}