| /* |
| * Copyright 2018 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 androidx.percentlayout.widget; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import android.app.Activity; |
| import android.support.test.rule.ActivityTestRule; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import org.junit.Rule; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| public abstract class BaseInstrumentationTestCase<A extends Activity> { |
| @Rule |
| public final ActivityTestRule<A> mActivityTestRule; |
| |
| protected BaseInstrumentationTestCase(Class<A> activityClass) { |
| mActivityTestRule = new ActivityTestRule<A>(activityClass); |
| } |
| |
| protected static void assertFuzzyEquals(String description, float expected, float actual) { |
| // On devices with certain screen densities we may run into situations where multiplying |
| // container width / height by a certain fraction ends up in a number that is almost but |
| // not exactly a round float number. For example, we can do float math to compute 15% |
| // of 1440 pixels and get 216.00002 due to inexactness of float math. This is why our |
| // tolerance is slightly bigger than 1 pixel in the comparison below. |
| assertEquals(description, expected, actual, 1.1f); |
| } |
| } |