frameworks/base/tests/CoreTests/android/core/CharArrayWriterTest.java

   1 /*
   2  * Copyright (C) 2008 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package android.core;
  18
  19 import junit.framework.TestCase;
  20
  21 import java.io.CharArrayWriter;
  22 import android.test.suitebuilder.annotation.SmallTest;
  23
  24 /**
  25  * Basic tests for CharArrayWriter.
  26  */
  27 public class CharArrayWriterTest extends TestCase {
  28
  29     @SmallTest
  30     public void testCharArrayWriter() throws Exception {
  31         String str = "AbCdEfGhIjKlMnOpQrStUvWxYz";
  32         CharArrayWriter a = new CharArrayWriter();
  33         CharArrayWriter b = new CharArrayWriter();
  34
  35         a.write(str, 0, 26);
  36         a.write('X');
  37         a.writeTo(b);
  38
  39         assertEquals(27, a.size());
  40         assertEquals("AbCdEfGhIjKlMnOpQrStUvWxYzX", a.toString());
  41
  42         b.write("alphabravodelta", 5, 5);
  43         b.append('X');
  44         assertEquals("AbCdEfGhIjKlMnOpQrStUvWxYzXbravoX", b.toString());
  45         b.append("omega");
  46         assertEquals("AbCdEfGhIjKlMnOpQrStUvWxYzXbravoXomega", b.toString());
  47     }
  48 }