Home | History | Annotate | Download | only in util 
      1 /*
      2  * Copyright (C) 2012 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 com.android.contacts.util;
     18 
     19 import android.graphics.Bitmap;
     20 import android.test.AndroidTestCase;
     21 import android.test.suitebuilder.annotation.SmallTest;
     22 
     23 import java.io.ByteArrayOutputStream;
     24 import java.io.IOException;
     25 
     26 /**
     27  * Tests for {@link com.android.contacts.util.BitmapUtil}.
     28  */
     29 @SmallTest
     30 public class BitmapUtilTests extends AndroidTestCase {
     31     public void testGetSmallerExtentFromBytes1() throws Exception {
     32         assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(100, 100)));
     33         assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(100, 100)));
     34     }
     35 
     36     public void testGetSmallerExtentFromBytes2() throws Exception {
     37         assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(200, 50)));
     38         assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(200, 50)));
     39     }
     40 
     41     public void testGetSmallerExtentFromBytes3() throws Exception {
     42         assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(40, 150)));
     43         assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(40, 150)));
     44     }
     45 
     46     public void testFindOptimalSampleSizeExact() throws Exception {
     47         assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 512));
     48     }
     49 
     50     public void testFindOptimalSampleSizeBigger() throws Exception {
     51         assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 1024));
     52     }
     53 
     54     public void testFindOptimalSampleSizeSmaller1() throws Exception {
     55         assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 256));
     56     }
     57 
     58     public void testFindOptimalSampleSizeSmaller2() throws Exception {
     59         assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 230));
     60     }
     61 
     62     public void testFindOptimalSampleSizeSmaller3() throws Exception {
     63         assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 129));
     64     }
     65 
     66     public void testFindOptimalSampleSizeSmaller4() throws Exception {
     67         assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 128));
     68     }
     69 
     70     public void testFindOptimalSampleSizeUnknownOriginal() throws Exception {
     71         assertEquals(1, BitmapUtil.findOptimalSampleSize(-1, 128));
     72     }
     73 
     74     public void testFindOptimalSampleSizeUnknownTarget() throws Exception {
     75         assertEquals(1, BitmapUtil.findOptimalSampleSize(128, -1));
     76     }
     77 
     78     public void testDecodeWithSampleSize1() throws IOException {
     79         assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 1));
     80         assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 1));
     81     }
     82 
     83     public void testDecodeWithSampleSize2() throws IOException {
     84         assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 2));
     85         assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 2));
     86     }
     87 
     88     public void testDecodeWithSampleSize2a() throws IOException {
     89         assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(50, 40), 2));
     90         assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createPngRawData(50, 40), 2));
     91     }
     92 
     93     public void testDecodeWithSampleSize4() throws IOException {
     94         assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 4));
     95         assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 4));
     96     }
     97 
     98     private void assertBitmapSize(int expectedWidth, int expectedHeight, Bitmap bitmap) {
     99         assertEquals(expectedWidth, bitmap.getWidth());
    100         assertEquals(expectedHeight, bitmap.getHeight());
    101     }
    102 
    103     private byte[] createJpegRawData(int sourceWidth, int sourceHeight) throws IOException {
    104         return createRawData(Bitmap.CompressFormat.JPEG, sourceWidth, sourceHeight);
    105     }
    106 
    107     private byte[] createPngRawData(int sourceWidth, int sourceHeight) throws IOException {
    108         return createRawData(Bitmap.CompressFormat.PNG, sourceWidth, sourceHeight);
    109     }
    110 
    111     private byte[] createRawData(Bitmap.CompressFormat format, int sourceWidth,
    112             int sourceHeight) throws IOException {
    113         // Create a temp bitmap as our source
    114         Bitmap b = Bitmap.createBitmap(sourceWidth, sourceHeight, Bitmap.Config.ARGB_8888);
    115         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    116         b.compress(format, 50, outputStream);
    117         final byte[] data = outputStream.toByteArray();
    118         outputStream.close();
    119         return data;
    120     }
    121 }
    122