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      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.content;
     18 
     19 import android.content.res.AssetManager;
     20 import android.test.AndroidTestCase;
     21 import android.test.suitebuilder.annotation.SmallTest;
     22 
     23 import java.io.IOException;
     24 import java.io.InputStream;
     25 
     26 public class AssetTest extends AndroidTestCase {
     27     private AssetManager mAssets;
     28 
     29     @Override
     30     protected void setUp() throws Exception {
     31         super.setUp();
     32         mAssets = mContext.getAssets();
     33     }
     34 
     35     public static void verifyTextAsset(InputStream is) throws IOException {
     36         String expectedString = "OneTwoThreeFourFiveSixSevenEightNineTen";
     37         byte[] buffer = new byte[10];
     38 
     39         int readCount;
     40         int curIndex = 0;
     41         while ((readCount = is.read(buffer, 0, buffer.length)) > 0) {
     42             for (int i = 0; i < readCount; i++) {
     43                 assertEquals("At index " + curIndex
     44                             + " expected " + expectedString.charAt(curIndex)
     45                             + " but found " + ((char) buffer[i]),
     46                         buffer[i], expectedString.charAt(curIndex));
     47                 curIndex++;
     48             }
     49         }
     50 
     51         readCount = is.read(buffer, 0, buffer.length);
     52         assertEquals("Reading end of buffer: expected readCount=-1 but got " + readCount,
     53                 -1, readCount);
     54 
     55         readCount = is.read(buffer, buffer.length, 0);
     56         assertEquals("Reading end of buffer length 0: expected readCount=0 but got " + readCount,
     57                 0, readCount);
     58 
     59         is.close();
     60     }
     61 
     62     @SmallTest
     63     public void testReadToEnd() throws Exception {
     64         InputStream is = mAssets.open("text.txt");
     65         verifyTextAsset(is);
     66     }
     67 
     68     // XXX failing
     69     public void xxtestListDir() throws Exception {
     70         String[] files = mAssets.list("");
     71         assertEquals(1, files.length);
     72         assertEquals("test.txt", files[0]);
     73     }
     74 }
     75