/
MotionUtilsTest.java
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/
MotionUtilsTest.java
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/*
* Copyright (C) 2022 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.google.android.material.motion;
import com.google.android.material.R;
import static com.google.common.truth.Truth.assertThat;
import android.animation.TimeInterpolator;
import android.os.Build.VERSION_CODES;
import androidx.appcompat.app.AppCompatActivity;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.view.animation.PathInterpolator;
import androidx.annotation.RequiresApi;
import androidx.test.core.app.ApplicationProvider;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.android.controller.ActivityController;
import org.robolectric.annotation.Config;
import org.robolectric.annotation.internal.DoNotInstrument;
@RunWith(RobolectricTestRunner.class)
@Config(sdk = VERSION_CODES.LOLLIPOP)
@DoNotInstrument
@RequiresApi(api = VERSION_CODES.LOLLIPOP)
public class MotionUtilsTest {
private ActivityController<AppCompatActivity> activityController;
@Rule public final ExpectedException thrown = ExpectedException.none();
@Test
public void testResolvesThemeInterpolator() {
assertThemeInterpolatorIsInstanceOf(
R.style.Theme_Material3_DayNight,
R.attr.motionEasingStandardInterpolator,
LinearInterpolator.class);
}
@Test
public void testCustomInterpolator_resolvesThemeInterpolator() {
assertThemeInterpolatorIsInstanceOf(
R.style.Theme_Material3_DayNight_CustomInterpolator,
R.attr.motionEasingStandardInterpolator,
LinearInterpolator.class);
}
@Test
public void testCustomAnimInterpolator_resolvesThemeInterpolator() {
assertThemeInterpolatorIsInstanceOf(
R.style.Theme_Material3_DayNight_CustomAnimInterpolator,
R.attr.motionEasingStandardInterpolator,
LinearInterpolator.class);
}
@Test
public void testResolvesLegacyInterpolator() {
assertThemeInterpolatorIsInstanceOf(
R.style.Theme_Material3_DayNight, R.attr.motionEasingStandard, PathInterpolator.class);
}
@Test
public void testMaterialComponentsTheme_resolveUnavailableInterpolatorReturnsDefault() {
createActivityAndSetTheme(R.style.Theme_MaterialComponents_DayNight);
DefaultDummyInterpolator defaultInterpolator = new DefaultDummyInterpolator();
TimeInterpolator standardInterpolator =
MotionUtils.resolveThemeInterpolator(
activityController.get().getApplicationContext(),
R.attr.motionEasingStandardInterpolator,
defaultInterpolator);
assertThat(standardInterpolator).isEqualTo(defaultInterpolator);
}
@Test
public void testMaterialComponentsTheme_resolvesLegacyInterpolator() {
assertThemeInterpolatorIsInstanceOf(
R.style.Theme_MaterialComponents_DayNight,
R.attr.motionEasingStandard,
PathInterpolator.class);
}
@Test
public void testMaterialComponentsThemeIncorrectLegacyAttrType_shouldThrowException() {
createActivityAndSetTheme(
R.style.Theme_MaterialComponents_DayNight_IncorrectLegacyEasingAttrType);
// ThrowingRunnable used by assertThrows is not available until gradle 4.13
thrown.expect(IllegalArgumentException.class);
MotionUtils.resolveThemeInterpolator(
activityController.get().getApplicationContext(),
R.attr.motionEasingStandard,
new DefaultDummyInterpolator());
}
@Test
public void testMaterialComponentsThemeIncorrectLegacyFormatting_shouldThrowException() {
createActivityAndSetTheme(
R.style.Theme_MaterialComponents_DayNight_IncorrectLegacyEasingFormat);
// ThrowingRunnable used by assertThrows is not available until gradle 4.13
thrown.expect(IllegalArgumentException.class);
MotionUtils.resolveThemeInterpolator(
activityController.get().getApplicationContext(),
R.attr.motionEasingStandard,
new DefaultDummyInterpolator());
}
private void createActivityAndSetTheme(int themeId) {
ApplicationProvider.getApplicationContext().setTheme(themeId);
activityController = Robolectric.buildActivity(AppCompatActivity.class).create();
}
private void assertThemeInterpolatorIsInstanceOf(int theme, int attrId, Class<?> expectedClass) {
createActivityAndSetTheme(theme);
DefaultDummyInterpolator defaultInterpolator = new DefaultDummyInterpolator();
TimeInterpolator themeInterpolator =
MotionUtils.resolveThemeInterpolator(
activityController.get().getApplicationContext(), attrId, defaultInterpolator);
assertThat(themeInterpolator).isNotEqualTo(defaultInterpolator);
// Robolectric's shadow of Android's AnimationUtils always returns a LinearInterpolator.
assertThat(themeInterpolator).isInstanceOf(expectedClass);
}
private static class DefaultDummyInterpolator implements Interpolator {
@Override
public float getInterpolation(float input) {
return 0;
}
}
}