rename package, fix typo

test/testcase/diffutils/DiffTest.java

@@ -0,0 +1,82 @@
+package diffutils;
+
+import java.util.*;
+
+import junit.framework.TestCase;
+import difflib.*;
+
+public class DiffTest extends TestCase {
+    private List<String> changeTest_from = Arrays.asList("aaa", "bbb", "ccc");
+    private List<String> changeTest_to = Arrays.asList("aaa", "zzz", "ccc");
+    
+    private List<String> deleteTest_from = Arrays.asList("ddd", "fff", "ggg");
+    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");
+    
+    @SuppressWarnings("serial")
+    public void testDiff_Insert() {
+        Patch patch = DiffUtils.diff(insertTest_from, insertTest_to);
+        assertNotNull(patch);
+        assertEquals(patch.getDeltas().size(), 1);
+        Delta delta = patch.getDeltas().get(0);
+        assertEquals(InsertDelta.class, delta.getClass());
+        assertEquals(new Chunk(1, 0, new LinkedList<String>()), delta.getOriginal());
+        assertEquals(new Chunk(1, 2, new LinkedList<String>() {
+            {
+                add("jjj");
+                add("kkk");
+            }
+        }), delta.getRevised());
+    }
+    
+    @SuppressWarnings("serial")
+    public void testDiff_Delete() {
+        Patch patch = DiffUtils.diff(deleteTest_from, deleteTest_to);
+        assertNotNull(patch);
+        assertEquals(patch.getDeltas().size(), 1);
+        Delta delta = patch.getDeltas().get(0);
+        assertEquals(DeleteDelta.class, delta.getClass());
+        assertEquals(new Chunk(0, 2, new LinkedList<String>() {
+            {
+                add("ddd");
+                add("fff");
+            }
+        }), delta.getOriginal());
+        assertEquals(new Chunk(0, 0, new LinkedList<String>()), delta.getRevised());
+    }
+    
+    @SuppressWarnings("serial")
+    public void testDiff_Change() {
+        Patch patch = DiffUtils.diff(changeTest_from, changeTest_to);
+        assertNotNull(patch);
+        assertEquals(patch.getDeltas().size(), 1);
+        Delta delta = patch.getDeltas().get(0);
+        assertEquals(ChangeDelta.class, delta.getClass());
+        assertEquals(new Chunk(1, 1, new LinkedList<String>() {
+            {
+                add("bbb");
+            }
+        }), delta.getOriginal());
+        assertEquals(new Chunk(1, 1, new LinkedList<String>() {
+            {
+                add("zzz");
+            }
+        }), delta.getRevised());
+    }
+    
+    public void testDiff_EmptyList() {
+        Patch patch = DiffUtils.diff(new ArrayList<String>(), new ArrayList<String>());
+        assertNotNull(patch);
+        assertEquals(patch.getDeltas().size(), 0);
+    }
+    
+    public void testDiff_EmptyListWithNonEmpty() {
+        Patch patch = DiffUtils.diff(new ArrayList<String>(), Arrays.asList("aaa"));
+        assertNotNull(patch);
+        assertEquals(patch.getDeltas().size(), 1);
+        Delta delta = patch.getDeltas().get(0);
+        assertEquals(InsertDelta.class, delta.getClass());
+    }
+}