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.common.util;
18 
19 import android.graphics.Bitmap;
20 import android.test.AndroidTestCase;
21 import android.test.suitebuilder.annotation.SmallTest;
22 
23 import com.android.contacts.common.util.BitmapUtil;
24 
25 import java.io.ByteArrayOutputStream;
26 import java.io.IOException;
27 
28 /**
29  * Tests for {@link com.android.contacts.common.util.BitmapUtil}.
30  */
31 @SmallTest
32 public class BitmapUtilTests extends AndroidTestCase {
testGetSmallerExtentFromBytes1()33     public void testGetSmallerExtentFromBytes1() throws Exception {
34         assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(100, 100)));
35         assertEquals(100, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(100, 100)));
36     }
37 
testGetSmallerExtentFromBytes2()38     public void testGetSmallerExtentFromBytes2() throws Exception {
39         assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(200, 50)));
40         assertEquals(50, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(200, 50)));
41     }
42 
testGetSmallerExtentFromBytes3()43     public void testGetSmallerExtentFromBytes3() throws Exception {
44         assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createJpegRawData(40, 150)));
45         assertEquals(40, BitmapUtil.getSmallerExtentFromBytes(createPngRawData(40, 150)));
46     }
47 
testFindOptimalSampleSizeExact()48     public void testFindOptimalSampleSizeExact() throws Exception {
49         assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 512));
50     }
51 
testFindOptimalSampleSizeBigger()52     public void testFindOptimalSampleSizeBigger() throws Exception {
53         assertEquals(1, BitmapUtil.findOptimalSampleSize(512, 1024));
54     }
55 
testFindOptimalSampleSizeSmaller1()56     public void testFindOptimalSampleSizeSmaller1() throws Exception {
57         assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 256));
58     }
59 
testFindOptimalSampleSizeSmaller2()60     public void testFindOptimalSampleSizeSmaller2() throws Exception {
61         assertEquals(2, BitmapUtil.findOptimalSampleSize(512, 230));
62     }
63 
testFindOptimalSampleSizeSmaller3()64     public void testFindOptimalSampleSizeSmaller3() throws Exception {
65         assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 129));
66     }
67 
testFindOptimalSampleSizeSmaller4()68     public void testFindOptimalSampleSizeSmaller4() throws Exception {
69         assertEquals(4, BitmapUtil.findOptimalSampleSize(512, 128));
70     }
71 
testFindOptimalSampleSizeUnknownOriginal()72     public void testFindOptimalSampleSizeUnknownOriginal() throws Exception {
73         assertEquals(1, BitmapUtil.findOptimalSampleSize(-1, 128));
74     }
75 
testFindOptimalSampleSizeUnknownTarget()76     public void testFindOptimalSampleSizeUnknownTarget() throws Exception {
77         assertEquals(1, BitmapUtil.findOptimalSampleSize(128, -1));
78     }
79 
testDecodeWithSampleSize1()80     public void testDecodeWithSampleSize1() throws IOException {
81         assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 1));
82         assertBitmapSize(128, 64, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 1));
83     }
84 
testDecodeWithSampleSize2()85     public void testDecodeWithSampleSize2() throws IOException {
86         assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 2));
87         assertBitmapSize(64, 32, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 2));
88     }
89 
testDecodeWithSampleSize2a()90     public void testDecodeWithSampleSize2a() throws IOException {
91         assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(50, 40), 2));
92         assertBitmapSize(25, 20, BitmapUtil.decodeBitmapFromBytes(createPngRawData(50, 40), 2));
93     }
94 
testDecodeWithSampleSize4()95     public void testDecodeWithSampleSize4() throws IOException {
96         assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createJpegRawData(128, 64), 4));
97         assertBitmapSize(32, 16, BitmapUtil.decodeBitmapFromBytes(createPngRawData(128, 64), 4));
98     }
99 
assertBitmapSize(int expectedWidth, int expectedHeight, Bitmap bitmap)100     private void assertBitmapSize(int expectedWidth, int expectedHeight, Bitmap bitmap) {
101         assertEquals(expectedWidth, bitmap.getWidth());
102         assertEquals(expectedHeight, bitmap.getHeight());
103     }
104 
createJpegRawData(int sourceWidth, int sourceHeight)105     private byte[] createJpegRawData(int sourceWidth, int sourceHeight) throws IOException {
106         return createRawData(Bitmap.CompressFormat.JPEG, sourceWidth, sourceHeight);
107     }
108 
createPngRawData(int sourceWidth, int sourceHeight)109     private byte[] createPngRawData(int sourceWidth, int sourceHeight) throws IOException {
110         return createRawData(Bitmap.CompressFormat.PNG, sourceWidth, sourceHeight);
111     }
112 
createRawData(Bitmap.CompressFormat format, int sourceWidth, int sourceHeight)113     private byte[] createRawData(Bitmap.CompressFormat format, int sourceWidth,
114             int sourceHeight) throws IOException {
115         // Create a temp bitmap as our source
116         Bitmap b = Bitmap.createBitmap(sourceWidth, sourceHeight, Bitmap.Config.ARGB_8888);
117         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
118         b.compress(format, 50, outputStream);
119         final byte[] data = outputStream.toByteArray();
120         outputStream.close();
121         return data;
122     }
123 }
124