Version 0.8.10.4

dart/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/internal/text/dart/DartReconcilingRegionTest.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
  * or implied. See the License for the specific language governing permissions and limitations under
  * the License.
  */
 package com.google.dart.tools.ui.internal.text.dart;
 
 import junit.framework.TestCase;
 
 public class DartReconcilingRegionTest extends TestCase {
 
-  public void test_add_disjoint_after() throws Exception {
-    DartReconcilingRegion target = new DartReconcilingRegion(3, 2, 6);
-    DartReconcilingRegion result = target.add(10, 7, 20);
-    assertEquals(3, result.getOffset());
-    assertEquals(14, result.getOldLength());
-    assertEquals(27, result.getNewLength());
+  public void test_add_contiguous() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(30, 0, 6);
+    assertResult(target, new DartReconcilingRegion(30, 0, 6), result);
+    assertEquals(5, result.getOffset());
+    assertEquals(12, result.getOldLength());
+    assertEquals(31, result.getNewLength());
     assertFalse(result.isEmpty());
   }
 
-  public void test_add_disjoint_before() throws Exception {
+  public void test_add_contiguousDelete() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(3, 2, 0);
+    assertResult(target, new DartReconcilingRegion(3, 2, 0), result);
+    assertEquals(3, result.getOffset());
+    assertEquals(14, result.getOldLength());
+    assertEquals(25, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_add_contiguousDelete2() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(4, 2, 0);
+    assertResult(target, new DartReconcilingRegion(4, 2, 0), result);
+    assertEquals(4, result.getOffset());
+    assertEquals(13, result.getOldLength());
+    assertEquals(24, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_add_contiguousReplace() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(28, 2, 6);
+    assertResult(target, new DartReconcilingRegion(28, 2, 6), result);
+    assertEquals(5, result.getOffset());
+    assertEquals(12, result.getOldLength());
+    assertEquals(29, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_add_contiguousReplace2() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(10, 2, 6);
+    assertResult(target, new DartReconcilingRegion(28, 2, 6), result);
+    assertEquals(5, result.getOffset());
+    assertEquals(12, result.getOldLength());
+    assertEquals(29, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_add_contiguousReplaceBefore() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
+    DartReconcilingRegion result = target.add(3, 2, 6);
+    assertResult(target, new DartReconcilingRegion(3, 2, 6), result);
+    assertEquals(3, result.getOffset());
+    assertEquals(14, result.getOldLength());
+    assertEquals(31, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_add_disjointAfter() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(3, 2, 6);
+    DartReconcilingRegion result = target.add(10, 7, 20);
+    assertNull(result);
+  }
+
+  public void test_add_disjointBefore() throws Exception {
     DartReconcilingRegion target = new DartReconcilingRegion(10, 7, 20);
     DartReconcilingRegion result = target.add(3, 2, 6);
-    assertEquals(3, result.getOffset());
-    assertEquals(14, result.getOldLength());
-    assertEquals(27, result.getNewLength());
-    assertFalse(result.isEmpty());
+    assertNull(result);
   }
 
   public void test_add_empty() throws Exception {
     DartReconcilingRegion target = new DartReconcilingRegion(3, 2, 6);
     DartReconcilingRegion result = target.add(10, 0, 0);
+    assertResult(target, new DartReconcilingRegion(10, 0, 0), result);
     assertEquals(3, result.getOffset());
     assertEquals(2, result.getOldLength());
     assertEquals(6, result.getNewLength());
     assertFalse(result.isEmpty());
   }
 
-  public void test_add_overlapping_after() throws Exception {
+  public void test_add_overlappingAfter() throws Exception {
     DartReconcilingRegion target = new DartReconcilingRegion(3, 2, 6);
-    DartReconcilingRegion result = target.add(5, 12, 25);
-    assertEquals(3, result.getOffset());
-    assertEquals(14, result.getOldLength());
-    assertEquals(27, result.getNewLength());
-    assertFalse(result.isEmpty());
+    DartReconcilingRegion result = target.add(5, 5, 25);
+    assertNull(result);
   }
 
-  public void test_add_overlapping_before() throws Exception {
+  public void test_add_overlappingBefore() throws Exception {
     DartReconcilingRegion target = new DartReconcilingRegion(5, 12, 25);
-    DartReconcilingRegion result = target.add(3, 2, 6);
-    assertEquals(3, result.getOffset());
-    assertEquals(14, result.getOldLength());
-    assertEquals(27, result.getNewLength());
-    assertFalse(result.isEmpty());
+    DartReconcilingRegion result = target.add(3, 1, 6);
+    assertNull(result);
   }
 
-  public void test_add_to_empty() throws Exception {
+  public void test_add_toEmpty1() throws Exception {
     DartReconcilingRegion target = new DartReconcilingRegion(0, 0, 0);
     DartReconcilingRegion result = target.add(3, 2, 6);
-    assertEquals(3, result.getOffset());
-    assertEquals(2, result.getOldLength());
-    assertEquals(6, result.getNewLength());
-    assertFalse(result.isEmpty());
-
-    target = new DartReconcilingRegion(10, 0, 0);
-    result = target.add(3, 2, 6);
+    assertResult(target, new DartReconcilingRegion(3, 2, 6), result);
     assertEquals(3, result.getOffset());
     assertEquals(2, result.getOldLength());
     assertEquals(6, result.getNewLength());
     assertFalse(result.isEmpty());
   }
 
-  public void test_new_empty() {
+  public void test_add_toEmpty2() throws Exception {
+    DartReconcilingRegion target = new DartReconcilingRegion(10, 0, 0);
+    DartReconcilingRegion result = target.add(3, 2, 6);
+    assertResult(target, new DartReconcilingRegion(3, 2, 6), result);
+    assertEquals(3, result.getOffset());
+    assertEquals(2, result.getOldLength());
+    assertEquals(6, result.getNewLength());
+    assertFalse(result.isEmpty());
+  }
+
+  public void test_new_empty1() {
     DartReconcilingRegion target = new DartReconcilingRegion(0, 0, 0);
     assertEquals(0, target.getOffset());
     assertEquals(0, target.getOldLength());
     assertEquals(0, target.getNewLength());
     assertTrue(target.isEmpty());
+  }
 
-    target = new DartReconcilingRegion(10, 0, 0);
+  public void test_new_empty2() {
+    DartReconcilingRegion target = new DartReconcilingRegion(10, 0, 0);
     assertEquals(10, target.getOffset());
     assertEquals(0, target.getOldLength());
     assertEquals(0, target.getNewLength());
     assertTrue(target.isEmpty());
   }
 
   public void test_new_insert() {
     DartReconcilingRegion target = new DartReconcilingRegion(10, 0, 20);
     assertEquals(10, target.getOffset());
     assertEquals(0, target.getOldLength());
     assertEquals(20, target.getNewLength());
     assertFalse(target.isEmpty());
   }
 
   public void test_new_replace() {
     DartReconcilingRegion target = new DartReconcilingRegion(10, 20, 0);
     assertEquals(10, target.getOffset());
     assertEquals(20, target.getOldLength());
     assertEquals(0, target.getNewLength());
     assertFalse(target.isEmpty());
   }
+
+  private String adjust(String code, DartReconcilingRegion region) {
+    StringBuilder sb = new StringBuilder();
+    sb.append(code.substring(0, region.getOffset()));
+    for (int count = 0; count < region.getNewLength(); count++) {
+      sb.append('0');
+    }
+    sb.append(code.substring(region.getOffset() + region.getOldLength()));
+    return sb.toString();
+  }
+
+  private void assertResult(DartReconcilingRegion target, DartReconcilingRegion added,
+      DartReconcilingRegion result) {
+    String code = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    String expected = adjust(adjust(code, target), added);
+    String actual = adjust(code, result);
+    assertEquals(expected, actual);
+  }
 }