1/* 2 * Copyright (C) 2016 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 17package android.support.v7.widget; 18 19import static org.junit.Assert.assertFalse; 20import static org.junit.Assert.assertTrue; 21 22import android.content.res.Resources; 23import android.graphics.drawable.Drawable; 24import android.support.v7.app.AppCompatActivity; 25import android.support.v7.app.BaseInstrumentationTestCase; 26import android.test.suitebuilder.annotation.SmallTest; 27 28import org.junit.Test; 29 30@SmallTest 31public class TintResourcesTest extends BaseInstrumentationTestCase<AppCompatActivity> { 32 33 public TintResourcesTest() { 34 super(AppCompatActivity.class); 35 } 36 37 @Test 38 public void testTintResourcesDelegateBackToOriginalResources() { 39 final TestResources testResources = new TestResources(getActivity().getResources()); 40 // First make sure that the flag is false 41 assertFalse(testResources.wasGetDrawableCalled()); 42 43 // Now wrap in a TintResources instance and get a Drawable 44 final Resources tintResources = new TintResources(getActivity(), testResources); 45 tintResources.getDrawable(android.R.drawable.ic_delete); 46 47 // ...and assert that the flag was flipped 48 assertTrue(testResources.wasGetDrawableCalled()); 49 } 50 51 /** 52 * Special Resources class which returns a known Drawable instance from a special ID 53 */ 54 private static class TestResources extends Resources { 55 private boolean mGetDrawableCalled; 56 57 public TestResources(Resources res) { 58 super(res.getAssets(), res.getDisplayMetrics(), res.getConfiguration()); 59 } 60 61 @Override 62 public Drawable getDrawable(int id) throws NotFoundException { 63 mGetDrawableCalled = true; 64 return super.getDrawable(id); 65 } 66 67 public boolean wasGetDrawableCalled() { 68 return mGetDrawableCalled; 69 } 70 } 71 72} 73