Formatter checkpoint.

editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/formatter/edit/StringEditOperationTest.java

Index: editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/formatter/edit/StringEditOperationTest.java
===================================================================
--- editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/formatter/edit/StringEditOperationTest.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/formatter/edit/StringEditOperationTest.java	(revision 0)
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2012, 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.engine.formatter.edit;
+
+import com.google.dart.engine.EngineTestCase;
+import com.google.dart.engine.internal.formatter.edit.StringEditOperation;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Basic {@link StringEditOperation} tests.
+ */
+public class StringEditOperationTest extends EngineTestCase {
+
+  final List<Edit> edits = new ArrayList<Edit>();
+
+  public void test_replace_same_len() throws Exception {
+    //'fun house' -> 'foo bar'
+    edits.add(new Edit(1, 2, "oo"));
+    edits.add(new Edit(4, 5, "bar"));
+    assertEditEquals("fun house", "foo bar");
+  }
+
+  public void test_replace_shorten() throws Exception {
+    //'AaBbCc' -> 'abc'
+    edits.add(new Edit(0, 2, "a"));
+    edits.add(new Edit(2, 2, "b"));
+    edits.add(new Edit(4, 2, "c"));
+    assertEditEquals("AaBbCc", "abc");
+  }
+
+  private void assertEditEquals(String src, String result) {
+    assertEquals("Strings don't match:", result, new StringEditOperation(edits).applyTo(src));
+  }
+
+}