/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.gallery3d.common; import android.test.AndroidTestCase; import android.test.suitebuilder.annotation.SmallTest; import android.util.Log; public class UtilsTest extends AndroidTestCase { private static final String TAG = "UtilsTest"; private static final int [] testData = new int [] { /* outWidth, outHeight, minSideLength, maxNumOfPixels, sample size */ 1, 1, BitmapUtils.UNCONSTRAINED, BitmapUtils.UNCONSTRAINED, 1, 1, 1, 1, 1, 1, 100, 100, 100, 10000, 1, 100, 100, 100, 2500, 2, 99, 66, 33, 10000, 2, 66, 99, 33, 10000, 2, 99, 66, 34, 10000, 1, 99, 66, 22, 10000, 4, 99, 66, 16, 10000, 4, 10000, 10000, 20000, 1000000, 16, 100, 100, 100, 10000, 1, // 1 100, 100, 50, 10000, 2, // 2 100, 100, 30, 10000, 4, // 3->4 100, 100, 22, 10000, 4, // 4 100, 100, 20, 10000, 8, // 5->8 100, 100, 11, 10000, 16, // 9->16 100, 100, 5, 10000, 24, // 20->24 100, 100, 2, 10000, 56, // 50->56 100, 100, 100, 10000 - 1, 2, // a bit less than 1 100, 100, 100, 10000 / (2 * 2) - 1, 4, // a bit less than 2 100, 100, 100, 10000 / (3 * 3) - 1, 4, // a bit less than 3 100, 100, 100, 10000 / (4 * 4) - 1, 8, // a bit less than 4 100, 100, 100, 10000 / (8 * 8) - 1, 16, // a bit less than 8 100, 100, 100, 10000 / (16 * 16) - 1, 24, // a bit less than 16 100, 100, 100, 10000 / (24 * 24) - 1, 32, // a bit less than 24 100, 100, 100, 10000 / (32 * 32) - 1, 40, // a bit less than 32 640, 480, 480, BitmapUtils.UNCONSTRAINED, 1, // 1 640, 480, 240, BitmapUtils.UNCONSTRAINED, 2, // 2 640, 480, 160, BitmapUtils.UNCONSTRAINED, 4, // 3->4 640, 480, 120, BitmapUtils.UNCONSTRAINED, 4, // 4 640, 480, 96, BitmapUtils.UNCONSTRAINED, 8, // 5->8 640, 480, 80, BitmapUtils.UNCONSTRAINED, 8, // 6->8 640, 480, 60, BitmapUtils.UNCONSTRAINED, 8, // 8 640, 480, 48, BitmapUtils.UNCONSTRAINED, 16, // 10->16 640, 480, 40, BitmapUtils.UNCONSTRAINED, 16, // 12->16 640, 480, 30, BitmapUtils.UNCONSTRAINED, 16, // 16 640, 480, 24, BitmapUtils.UNCONSTRAINED, 24, // 20->24 640, 480, 20, BitmapUtils.UNCONSTRAINED, 24, // 24 640, 480, 16, BitmapUtils.UNCONSTRAINED, 32, // 30->32 640, 480, 12, BitmapUtils.UNCONSTRAINED, 40, // 40 640, 480, 10, BitmapUtils.UNCONSTRAINED, 48, // 48 640, 480, 8, BitmapUtils.UNCONSTRAINED, 64, // 60->64 640, 480, 6, BitmapUtils.UNCONSTRAINED, 80, // 80 640, 480, 4, BitmapUtils.UNCONSTRAINED, 120, // 120 640, 480, 3, BitmapUtils.UNCONSTRAINED, 160, // 160 640, 480, 2, BitmapUtils.UNCONSTRAINED, 240, // 240 640, 480, 1, BitmapUtils.UNCONSTRAINED, 480, // 480 640, 480, BitmapUtils.UNCONSTRAINED, BitmapUtils.UNCONSTRAINED, 1, 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480, 1, // 1 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 - 1, 2, // a bit less than 1 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 4, 2, // 2 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 4 - 1, 4, // a bit less than 2 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 9, 4, // 3 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 9 - 1, 4, // a bit less than 3 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 16, 4, // 4 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 16 - 1, 8, // a bit less than 4 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 64, 8, // 8 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 64 - 1, 16, // a bit less than 8 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 256, 16, // 16 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / 256 - 1, 24, // a bit less than 16 640, 480, BitmapUtils.UNCONSTRAINED, 640 * 480 / (24 * 24) - 1, 32, // a bit less than 24 }; @SmallTest public void testComputeSampleSize() { for (int i = 0; i < testData.length; i += 5) { int w = testData[i]; int h = testData[i + 1]; int minSide = testData[i + 2]; int maxPixels = testData[i + 3]; int sampleSize = testData[i + 4]; int result = BitmapUtils.computeSampleSize(w, h, minSide, maxPixels); if (result != sampleSize) { Log.v(TAG, w + "x" + h + ", minSide = " + minSide + ", maxPixels = " + maxPixels + ", sampleSize = " + sampleSize + ", result = " + result); } assertTrue(sampleSize == result); } } public void testAssert() { // This should not throw an exception. Utils.assertTrue(true); // This should throw an exception. try { Utils.assertTrue(false); fail(); } catch (AssertionError ex) { // expected. } } public void testCheckNotNull() { // These should not throw an expection. Utils.checkNotNull(new Object()); Utils.checkNotNull(0); Utils.checkNotNull(""); // This should throw an expection. try { Utils.checkNotNull(null); fail(); } catch (NullPointerException ex) { // expected. } } public void testEquals() { Object a = new Object(); Object b = new Object(); assertTrue(Utils.equals(null, null)); assertTrue(Utils.equals(a, a)); assertFalse(Utils.equals(null, a)); assertFalse(Utils.equals(a, null)); assertFalse(Utils.equals(a, b)); } public void testNextPowerOf2() { int[] q = new int[] {1, 2, 3, 4, 5, 6, 10, 65535, (1 << 30) - 1, (1 << 30)}; int[] a = new int[] {1, 2, 4, 4, 8, 8, 16, 65536, (1 << 30) , (1 << 30)}; for (int i = 0; i < q.length; i++) { assertEquals(a[i], Utils.nextPowerOf2(q[i])); } int[] e = new int[] {0, -1, -2, -4, -65536, (1 << 30) + 1, Integer.MAX_VALUE}; for (int v : e) { try { Utils.nextPowerOf2(v); fail(); } catch (IllegalArgumentException ex) { // expected. } } } public void testClamp() { assertEquals(1000, Utils.clamp(300, 1000, 2000)); assertEquals(1300, Utils.clamp(1300, 1000, 2000)); assertEquals(2000, Utils.clamp(2300, 1000, 2000)); assertEquals(0.125f, Utils.clamp(0.1f, 0.125f, 0.5f)); assertEquals(0.25f, Utils.clamp(0.25f, 0.125f, 0.5f)); assertEquals(0.5f, Utils.clamp(0.9f, 0.125f, 0.5f)); } public void testIsOpaque() { assertTrue(Utils.isOpaque(0xFF000000)); assertTrue(Utils.isOpaque(0xFFFFFFFF)); assertTrue(Utils.isOpaque(0xFF123456)); assertFalse(Utils.isOpaque(0xFEFFFFFF)); assertFalse(Utils.isOpaque(0x8FFFFFFF)); assertFalse(Utils.isOpaque(0x00FF0000)); assertFalse(Utils.isOpaque(0x5500FF00)); assertFalse(Utils.isOpaque(0xAA0000FF)); } public static void assertFloatEq(float expected, float actual) { if (Math.abs(actual - expected) > 1e-6) { Log.v(TAG, "expected: " + expected + ", actual: " + actual); fail(); } } }