/
MaterialResourcesTest.java
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/
MaterialResourcesTest.java
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/*
* Copyright (C) 2021 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.resources;
import com.google.android.material.R;
import static android.content.Context.WINDOW_SERVICE;
import static com.google.common.truth.Truth.assertThat;
import android.content.res.Configuration;
import androidx.appcompat.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.view.WindowManager;
import androidx.test.core.app.ApplicationProvider;
import org.junit.Before;
import org.junit.Test;
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)
@DoNotInstrument
public class MaterialResourcesTest {
private ActivityController<AppCompatActivity> activityController;
@Before
public void createActivity() {
ApplicationProvider.getApplicationContext()
.setTheme(R.style.Theme_Material3_DayNight_NoActionBar);
activityController = Robolectric.buildActivity(AppCompatActivity.class).create();
}
@Test
public void testGetUnscaledDimensionPixelSize_returnsSameValueWhenFontScalingIsOff() {
AppCompatActivity activity = activityController.get();
int spResult =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_UsesSP, 0);
int dpResult =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_UsesDp, 0);
assertThat(spResult).isEqualTo(dpResult);
}
@Test
public void testUnscaledDimensionPixelSize_differsFromDimensionPixelSize() {
float fontScale = 1.7F;
setFontScale(activityController, fontScale);
AppCompatActivity activity = activityController.get();
int unscaledSp =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_UsesSP, 0);
int scaledSp = activity.getResources().getDimensionPixelSize(
R.dimen.material_text_size_sp);
assertThat(unscaledSp).isNotEqualTo(scaledSp);
assertThat(scaledSp).isEqualTo(Math.round(unscaledSp * fontScale));
}
@Test
@Config(qualifiers = "xxxhdpi")
public void
testGetUnscaledDimensionPixelSize_returnsSameValueWhenFontScalingIsOnWithHighDensity() {
setFontScale(activityController, 1.3f);
AppCompatActivity activity = activityController.get();
int spResult =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_UsesSP, 0);
int dpResult =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_UsesDp, 0);
assertThat(spResult).isEqualTo(dpResult);
}
@Test
public void testUnscaledDimensionPixelSize_noTextSizeAvailable() {
AppCompatActivity activity = activityController.get();
int noSizeResult =
MaterialResources.getUnscaledTextSize(
activity, R.style.TextAppearance_Test_NoTextSize, 18);
assertThat(noSizeResult).isEqualTo(18);
}
@Test
public void testUnscaledDimensionPixelSize_noTextAppearanceAvailable() {
AppCompatActivity activity = activityController.get();
int noTextAppearanceResult =
MaterialResources.getUnscaledTextSize(
activity, 0, 22);
assertThat(noTextAppearanceResult).isEqualTo(22);
}
private static void setFontScale(
ActivityController<AppCompatActivity> activityController, float scale) {
AppCompatActivity activity = activityController.get();
Configuration configuration = activity.getResources().getConfiguration();
DisplayMetrics metrics = activity.getResources().getDisplayMetrics();
WindowManager wm = (WindowManager) activity.getSystemService(WINDOW_SERVICE);
wm.getDefaultDisplay().getMetrics(metrics);
configuration.fontScale = scale;
metrics.scaledDensity = configuration.fontScale * metrics.density;
activity.getResources().updateConfiguration(configuration, metrics);
activityController.configurationChange(configuration);
}
}