1 /* 2 * Copyright (C) 2019 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 package android.theme.cts; 17 18 import static org.junit.Assert.assertEquals; 19 20 import android.content.Context; 21 import android.content.res.Configuration; 22 import android.content.res.TypedArray; 23 import android.util.DisplayMetrics; 24 25 import androidx.test.InstrumentationRegistry; 26 import androidx.test.filters.SmallTest; 27 import androidx.test.runner.AndroidJUnit4; 28 29 import org.junit.Before; 30 import org.junit.Test; 31 import org.junit.runner.RunWith; 32 33 @RunWith(AndroidJUnit4.class) 34 @SmallTest 35 public class WatchPercentageScreenDimenTest { 36 37 private Context mContext; 38 private Configuration mConfig; 39 private float mScreenWidth; 40 private DisplayMetrics mDisplayMetrics; 41 isRoundWatch()42 private boolean isRoundWatch() { 43 return mConfig.isScreenRound() && (mConfig.uiMode & Configuration.UI_MODE_TYPE_WATCH) 44 == Configuration.UI_MODE_TYPE_WATCH; 45 } 46 47 @Before setUp()48 public void setUp() throws Exception { 49 mContext = InstrumentationRegistry.getTargetContext(); 50 mConfig = mContext.getResources().getConfiguration(); 51 mDisplayMetrics = mContext.getResources().getDisplayMetrics(); 52 mScreenWidth = mDisplayMetrics.widthPixels; 53 } 54 55 @Test test_10()56 public void test_10() { 57 if (!isRoundWatch()) { 58 return; // skip if not round watch 59 } 60 61 float expected = mScreenWidth * 0.1f; 62 float expectedDelta = getMaxErrorRatio() * expected; 63 64 TypedArray attrs = mContext.obtainStyledAttributes(new int[] { 65 android.R.attr.listPreferredItemPaddingEnd 66 }); 67 assertEquals("invalid number of attributes", 1, attrs.length()); 68 69 for (int i = 0; i < attrs.length(); ++i) { 70 float actual = attrs.getDimension(i, -1); 71 assertEquals("screen_percentage_10 is not 10% of screen width", 72 expected, actual, expectedDelta + 0.01f); 73 } 74 } 75 76 @Test test_15()77 public void test_15() { 78 if (!isRoundWatch()) { 79 return; // skip if not round watch 80 } 81 82 float expected = mScreenWidth * 0.15f; 83 float expectedDelta = getMaxErrorRatio() * expected; 84 85 TypedArray attrs = mContext.obtainStyledAttributes(new int[] { 86 android.R.attr.dialogPreferredPadding, 87 android.R.attr.listPreferredItemPaddingLeft, 88 android.R.attr.listPreferredItemPaddingRight, 89 android.R.attr.listPreferredItemPaddingStart 90 }); 91 assertEquals("invalid number of attributes", 4, attrs.length()); 92 93 for (int i = 0; i < attrs.length(); ++i) { 94 float actual = attrs.getDimension(i, -1); 95 assertEquals("screen_percentage_15 is not 15% of screen width", 96 expected, actual, expectedDelta + 0.01f); 97 } 98 } 99 getMaxErrorRatio()100 private float getMaxErrorRatio() { 101 // The size used will be the closest qualifier with width <= device width, so there may be 102 // small rounding errors. 103 float widthDp = mDisplayMetrics.widthPixels / mDisplayMetrics.density; 104 return (widthDp - (float) Math.floor(widthDp)) / widthDp; 105 } 106 } 107