tests/robotests/src/com/android/settings/widget/VideoPreferenceTest.java

/*
 * Copyright (C) 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 com.android.settings.widget;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.Mockito.when;

import android.content.Context;
import android.media.MediaPlayer;
import androidx.preference.PreferenceViewHolder;
import android.view.LayoutInflater;

import com.android.settings.R;
import com.android.settings.testutils.SettingsRobolectricTestRunner;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.robolectric.RuntimeEnvironment;

@RunWith(SettingsRobolectricTestRunner.class)
public class VideoPreferenceTest {
    private static final int VIDEO_WIDTH = 100;
    private static final int VIDEO_HEIGHT = 150;
    @Mock
    private MediaPlayer mMediaPlayer;
    private Context mContext;
    private VideoPreference mVideoPreference;
    private PreferenceViewHolder mPreferenceViewHolder;

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);

        mContext = RuntimeEnvironment.application;
        mVideoPreference = new VideoPreference(mContext, null /* attrs */);
        mVideoPreference.mMediaPlayer = mMediaPlayer;
        when(mMediaPlayer.getVideoWidth()).thenReturn(VIDEO_WIDTH);
        when(mMediaPlayer.getVideoHeight()).thenReturn(VIDEO_HEIGHT);

        mPreferenceViewHolder = PreferenceViewHolder.createInstanceForTests(
                LayoutInflater.from(mContext).inflate(R.layout.video_preference, null));
    }

    @Test
    public void onBindViewHolder_hasCorrectRatio() {
        mVideoPreference.mAnimationAvailable = true;

        mVideoPreference.updateAspectRatio();
        mVideoPreference.onBindViewHolder(mPreferenceViewHolder);

        final AspectRatioFrameLayout layout =
                (AspectRatioFrameLayout) mPreferenceViewHolder.findViewById(R.id.video_container);
        assertThat(layout.mAspectRatio).isWithin(0.01f).of(VIDEO_WIDTH / (float) VIDEO_HEIGHT);
    }
}