| /* |
| * Copyright (C) 2015 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.tv.recommendation; |
| |
| import static android.support.test.InstrumentationRegistry.getContext; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import com.android.tv.data.Channel; |
| import com.android.tv.recommendation.RecommendationUtils.ChannelRecordSortedMapHelper; |
| import com.android.tv.recommendation.Recommender.Evaluator; |
| import com.android.tv.testing.Utils; |
| |
| import org.junit.Before; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Base test case for Recommendation Evaluator Unit tests. |
| */ |
| public abstract class EvaluatorTestCase<T extends Evaluator> { |
| private static final long INVALID_CHANNEL_ID = -1; |
| |
| private static final double SCORE_DELTA = 0.01; |
| |
| private ChannelRecordSortedMapHelper mChannelRecordSortedMap; |
| private RecommendationDataManager mDataManager; |
| |
| public T mEvaluator; |
| |
| @Before |
| public void setUp() { |
| mChannelRecordSortedMap = new ChannelRecordSortedMapHelper(getContext()); |
| mDataManager = RecommendationUtils |
| .createMockRecommendationDataManager(mChannelRecordSortedMap); |
| Recommender mRecommender = new FakeRecommender(); |
| mEvaluator = createEvaluator(); |
| mEvaluator.setRecommender(mRecommender); |
| mChannelRecordSortedMap.setRecommender(mRecommender); |
| mChannelRecordSortedMap.resetRandom(Utils.createTestRandom()); |
| } |
| |
| /** |
| * Each evaluator test has to create Evaluator in {@code mEvaluator}. |
| */ |
| public abstract T createEvaluator(); |
| |
| public void addChannels(int numberOfChannels) { |
| mChannelRecordSortedMap.addChannels(numberOfChannels); |
| } |
| |
| public Channel addChannel() { |
| return mChannelRecordSortedMap.addChannel(); |
| } |
| |
| public void addRandomWatchLogs(long watchStartTimeMs, long watchEndTimeMs, |
| long maxWatchDurationMs) { |
| assertTrue(mChannelRecordSortedMap.addRandomWatchLogs(watchStartTimeMs, watchEndTimeMs, |
| maxWatchDurationMs)); |
| } |
| |
| public void addWatchLog(long channelId, long watchStartTimeMs, long durationTimeMs) { |
| assertTrue(mChannelRecordSortedMap.addWatchLog(channelId, watchStartTimeMs, |
| durationTimeMs)); |
| } |
| |
| public List<Long> getChannelIdListSorted() { |
| return new ArrayList<>(mChannelRecordSortedMap.keySet()); |
| } |
| |
| public long getLatestWatchEndTimeMs() { |
| long latestWatchEndTimeMs = 0; |
| for (ChannelRecord channelRecord : mChannelRecordSortedMap.values()) { |
| latestWatchEndTimeMs = Math.max(latestWatchEndTimeMs, |
| channelRecord.getLastWatchEndTimeMs()); |
| } |
| return latestWatchEndTimeMs; |
| } |
| |
| /** |
| * Check whether scores of each channels are valid. |
| */ |
| protected void assertChannelScoresValid() { |
| assertEqualScores(Evaluator.NOT_RECOMMENDED, |
| mEvaluator.evaluateChannel(INVALID_CHANNEL_ID)); |
| assertEqualScores(Evaluator.NOT_RECOMMENDED, |
| mEvaluator.evaluateChannel(mChannelRecordSortedMap.size())); |
| |
| for (long channelId : mChannelRecordSortedMap.keySet()) { |
| double score = mEvaluator.evaluateChannel(channelId); |
| assertTrue("Channel " + channelId + " score of " + score + "is not valid", |
| score == Evaluator.NOT_RECOMMENDED || (0.0 <= score && score <= 1.0)); |
| } |
| } |
| |
| /** |
| * Notify that loading channels and watch logs are finished. |
| */ |
| protected void notifyChannelAndWatchLogLoaded() { |
| mEvaluator.onChannelRecordListChanged(new ArrayList<>(mChannelRecordSortedMap.values())); |
| } |
| |
| void assertEqualScores(double expected, double actual) { |
| assertEquals(expected, actual, SCORE_DELTA); |
| } |
| |
| void assertEqualScores(String message, double expected, double actual) { |
| assertEquals(message, expected, actual, SCORE_DELTA); |
| } |
| |
| private class FakeRecommender extends Recommender { |
| public FakeRecommender() { |
| super(new Recommender.Listener() { |
| @Override |
| public void onRecommenderReady() { |
| } |
| |
| @Override |
| public void onRecommendationChanged() { |
| } |
| }, true, mDataManager); |
| } |
| |
| @Override |
| public ChannelRecord getChannelRecord(long channelId) { |
| return mChannelRecordSortedMap.get(channelId); |
| } |
| } |
| } |