1 /* 2 * Copyright (C) 2010 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.gallery3d.common; 18 19 import android.test.AndroidTestCase; 20 import android.test.suitebuilder.annotation.SmallTest; 21 import android.util.Log; 22 23 public class UtilsTest extends AndroidTestCase { 24 private static final String TAG = "UtilsTest"; 25 26 private static final int [] testData = new int [] { 27 /* outWidth, outHeight, minSideLength, maxNumOfPixels, sample size */ 28 1, 1, BitmapUtils.UNCONSTRAINED, BitmapUtils.UNCONSTRAINED, 1, 29 1, 1, 1, 1, 1, 30 100, 100, 100, 10000, 1, 31 100, 100, 100, 2500, 2, 32 99, 66, 33, 10000, 2, 33 66, 99, 33, 10000, 2, 34 99, 66, 34, 10000, 1, 35 99, 66, 22, 10000, 4, 36 99, 66, 16, 10000, 4, 37 38 10000, 10000, 20000, 1000000, 16, 39 40 100, 100, 100, 10000, 1, // 1 41 100, 100, 50, 10000, 2, // 2 42 100, 100, 30, 10000, 4, // 3->4 43 100, 100, 22, 10000, 4, // 4 44 100, 100, 20, 10000, 8, // 5->8 45 100, 100, 11, 10000, 16, // 9->16 46 100, 100, 5, 10000, 24, // 20->24 47 100, 100, 2, 10000, 56, // 50->56 48 49 100, 100, 100, 10000 - 1, 2, // a bit less than 1 50 100, 100, 100, 10000 / (2 * 2) - 1, 4, // a bit less than 2 51 100, 100, 100, 10000 / (3 * 3) - 1, 4, // a bit less than 3 52 100, 100, 100, 10000 / (4 * 4) - 1, 8, // a bit less than 4 53 100, 100, 100, 10000 / (8 * 8) - 1, 16, // a bit less than 8 54 100, 100, 100, 10000 / (16 * 16) - 1, 24, // a bit less than 16 55 100, 100, 100, 10000 / (24 * 24) - 1, 32, // a bit less than 24 56 100, 100, 100, 10000 / (32 * 32) - 1, 40, // a bit less than 32 57 58 640, 480, 480, BitmapUtils.UNCONSTRAINED, 1, // 1 59 640, 480, 240, BitmapUtils.UNCONSTRAINED, 2, // 2 60 640, 480, 160, BitmapUtils.UNCONSTRAINED, 4, // 3->4 61 640, 480, 120, BitmapUtils.UNCONSTRAINED, 4, // 4 62 640, 480, 96, BitmapUtils.UNCONSTRAINED, 8, // 5->8 63 640, 480, 80, BitmapUtils.UNCONSTRAINED, 8, // 6->8 64 640, 480, 60, BitmapUtils.UNCONSTRAINED, 8, // 8 65 640, 480, 48, BitmapUtils.UNCONSTRAINED, 16, // 10->16 66 640, 480, 40, BitmapUtils.UNCONSTRAINED, 16, // 12->16 67 640, 480, 30, BitmapUtils.UNCONSTRAINED, 16, // 16 68 640, 480, 24, BitmapUtils.UNCONSTRAINED, 24, // 20->24 69 640, 480, 20, BitmapUtils.UNCONSTRAINED, 24, // 24 70 640, 480, 16, BitmapUtils.UNCONSTRAINED, 32, // 30->32 71 640, 480, 12, BitmapUtils.UNCONSTRAINED, 40, // 40 72 640, 480, 10, BitmapUtils.UNCONSTRAINED, 48, // 48 73 640, 480, 8, BitmapUtils.UNCONSTRAINED, 64, // 60->64 74 640, 480, 6, BitmapUtils.UNCONSTRAINED, 80, // 80 75 640, 480, 4, BitmapUtils.UNCONSTRAINED, 120, // 120 76 640, 480, 3, BitmapUtils.UNCONSTRAINED, 160, // 160 77 640, 480, 2, BitmapUtils.UNCONSTRAINED, 240, // 240 78 640, 480, 1, BitmapUtils.UNCONSTRAINED, 480, // 480 79 80 640, 480, BitmapUtils.UNCONSTRAINED, BitmapUtils.UNCONSTRAINED, 1, 81 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480, 1, // 1 82 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 - 1, 2, // a bit less than 1 83 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 4, 2, // 2 84 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 4 - 1, 4, // a bit less than 2 85 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 9, 4, // 3 86 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 9 - 1, 4, // a bit less than 3 87 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 16, 4, // 4 88 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 16 - 1, 8, // a bit less than 4 89 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 64, 8, // 8 90 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 64 - 1, 16, // a bit less than 8 91 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 256, 16, // 16 92 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 256 - 1, 24, // a bit less than 16 93 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / (24 * 24) - 1, 32, // a bit less than 24 94 }; 95 96 @SmallTest 97 public void testComputeSampleSize() { 98 99 for (int i = 0; i < testData.length; i += 5) { 100 int w = testData[i]; 101 int h = testData[i + 1]; 102 int minSide = testData[i + 2]; 103 int maxPixels = testData[i + 3]; 104 int sampleSize = testData[i + 4]; 105 int result = BitmapUtils.computeSampleSize(w, h, minSide, maxPixels); 106 if (result != sampleSize) { 107 Log.v(TAG, w + "x" + h + ", minSide = " + minSide + ", maxPixels = " 108 + maxPixels + ", sampleSize = " + sampleSize + ", result = " 109 + result); 110 } 111 assertTrue(sampleSize == result); 112 } 113 } 114 115 public void testAssert() { 116 // This should not throw an exception. 117 Utils.assertTrue(true); 118 119 // This should throw an exception. 120 try { 121 Utils.assertTrue(false); 122 fail(); 123 } catch (AssertionError ex) { 124 // expected. 125 } 126 } 127 128 public void testCheckNotNull() { 129 // These should not throw an expection. 130 Utils.checkNotNull(new Object()); 131 Utils.checkNotNull(0); 132 Utils.checkNotNull(""); 133 134 // This should throw an expection. 135 try { 136 Utils.checkNotNull(null); 137 fail(); 138 } catch (NullPointerException ex) { 139 // expected. 140 } 141 } 142 143 public void testEquals() { 144 Object a = new Object(); 145 Object b = new Object(); 146 147 assertTrue(Utils.equals(null, null)); 148 assertTrue(Utils.equals(a, a)); 149 assertFalse(Utils.equals(null, a)); 150 assertFalse(Utils.equals(a, null)); 151 assertFalse(Utils.equals(a, b)); 152 } 153 154 public void testIsPowerOf2() { 155 for (int i = 0; i < 31; i++) { 156 int v = (1 << i); 157 assertTrue(Utils.isPowerOf2(v)); 158 } 159 160 int[] f = new int[] {3, 5, 6, 7, 9, 10, 65535, Integer.MAX_VALUE - 1, 161 Integer.MAX_VALUE }; 162 for (int v : f) { 163 assertFalse(Utils.isPowerOf2(v)); 164 } 165 166 int[] e = new int[] {0, -1, -2, -4, -65536, Integer.MIN_VALUE + 1, 167 Integer.MIN_VALUE }; 168 for (int v : e) { 169 try { 170 Utils.isPowerOf2(v); 171 fail(); 172 } catch (IllegalArgumentException ex) { 173 // expected. 174 } 175 } 176 } 177 178 public void testNextPowerOf2() { 179 int[] q = new int[] {1, 2, 3, 4, 5, 6, 10, 65535, (1 << 30) - 1, (1 << 30)}; 180 int[] a = new int[] {1, 2, 4, 4, 8, 8, 16, 65536, (1 << 30) , (1 << 30)}; 181 182 for (int i = 0; i < q.length; i++) { 183 assertEquals(a[i], Utils.nextPowerOf2(q[i])); 184 } 185 186 int[] e = new int[] {0, -1, -2, -4, -65536, (1 << 30) + 1, Integer.MAX_VALUE}; 187 188 for (int v : e) { 189 try { 190 Utils.nextPowerOf2(v); 191 fail(); 192 } catch (IllegalArgumentException ex) { 193 // expected. 194 } 195 } 196 } 197 198 public void testDistance() { 199 assertFloatEq(0f, Utils.distance(0, 0, 0, 0)); 200 assertFloatEq(1f, Utils.distance(0, 1, 0, 0)); 201 assertFloatEq(1f, Utils.distance(0, 0, 0, 1)); 202 assertFloatEq(2f, Utils.distance(1, 2, 3, 2)); 203 assertFloatEq(5f, Utils.distance(1, 2, 1 + 3, 2 + 4)); 204 assertFloatEq(5f, Utils.distance(1, 2, 1 + 3, 2 + 4)); 205 assertFloatEq(Float.MAX_VALUE, Utils.distance(Float.MAX_VALUE, 0, 0, 0)); 206 } 207 208 public void testClamp() { 209 assertEquals(1000, Utils.clamp(300, 1000, 2000)); 210 assertEquals(1300, Utils.clamp(1300, 1000, 2000)); 211 assertEquals(2000, Utils.clamp(2300, 1000, 2000)); 212 213 assertEquals(0.125f, Utils.clamp(0.1f, 0.125f, 0.5f)); 214 assertEquals(0.25f, Utils.clamp(0.25f, 0.125f, 0.5f)); 215 assertEquals(0.5f, Utils.clamp(0.9f, 0.125f, 0.5f)); 216 } 217 218 public void testIsOpaque() { 219 assertTrue(Utils.isOpaque(0xFF000000)); 220 assertTrue(Utils.isOpaque(0xFFFFFFFF)); 221 assertTrue(Utils.isOpaque(0xFF123456)); 222 223 assertFalse(Utils.isOpaque(0xFEFFFFFF)); 224 assertFalse(Utils.isOpaque(0x8FFFFFFF)); 225 assertFalse(Utils.isOpaque(0x00FF0000)); 226 assertFalse(Utils.isOpaque(0x5500FF00)); 227 assertFalse(Utils.isOpaque(0xAA0000FF)); 228 } 229 230 public static void testSwap() { 231 Integer[] a = {1, 2, 3}; 232 Utils.swap(a, 0, 2); 233 assertEquals(a[0].intValue(), 3); 234 assertEquals(a[1].intValue(), 2); 235 assertEquals(a[2].intValue(), 1); 236 } 237 238 public static void assertFloatEq(float expected, float actual) { 239 if (Math.abs(actual - expected) > 1e-6) { 240 Log.v(TAG, "expected: " + expected + ", actual: " + actual); 241 fail(); 242 } 243 } 244 } 245
