package testcase.diffutills;

import java.util.*;

import junit.framework.TestCase;
import difflib.*;

public class PatchTest extends TestCase {
	private List<String> changeTest_from = Arrays.asList("aaa", "bbb", "ccc", "ddd");
	private List<String> changeTest_to   = Arrays.asList("aaa", "bxb", "cxc", "ddd");
	
	private List<String> deleteTest_from = Arrays.asList("ddd", "fff", "ggg", "hhh");
	private List<String> deleteTest_to   = Arrays.asList("ggg");
	
	private List<String> insertTest_from = Arrays.asList("hhh");
	private List<String> insertTest_to   = Arrays.asList("hhh", "jjj", "kkk", "lll");
	
	public void testPatch_Insert() {
		Patch patch = DiffUtils.diff(insertTest_from, insertTest_to);
		assertEquals(insertTest_to, DiffUtils.patch(insertTest_from, patch));
	}
	
	public void testPatch_Delete() {
		Patch patch = DiffUtils.diff(deleteTest_from, deleteTest_to);
		assertEquals(deleteTest_to, DiffUtils.patch(deleteTest_from, patch));
	}
	
	public void testPatch_Change() {
		Patch patch = DiffUtils.diff(changeTest_from, changeTest_to);
		assertEquals(changeTest_to, DiffUtils.patch(changeTest_from, patch));
	}
}