1 files changed, 128 insertions, 0 deletions
diff --git a/tests/unit/src/com/android/tv/recommendation/EvaluatorTestCase.java b/tests/unit/src/com/android/tv/recommendation/EvaluatorTestCase.java
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+++ b/tests/unit/src/com/android/tv/recommendation/EvaluatorTestCase.java
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+/*
+ * 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 android.test.AndroidTestCase;
+
+import com.android.tv.data.Channel;
+import com.android.tv.recommendation.RecommendationUtils.ChannelRecordSortedMapHelper;
+import com.android.tv.recommendation.Recommender.Evaluator;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Base test case for Recommendation Evaluator Unit tests.
+ */
+public abstract class EvaluatorTestCase<T extends Evaluator> extends AndroidTestCase {
+    private static final long INVALID_CHANNEL_ID = -1;
+
+    private ChannelRecordSortedMapHelper mChannelRecordSortedMap;
+    private RecommendationDataManager mDataManager;
+
+    public T mEvaluator;
+
+    public void setUp() throws Exception {
+        super.setUp();
+        mChannelRecordSortedMap = new ChannelRecordSortedMapHelper(getContext());
+        mDataManager = RecommendationUtils
+                .createMockRecommendationDataManager(mChannelRecordSortedMap);
+        Recommender mRecommender = new FakeRecommender();
+        mEvaluator = createEvaluator();
+        mEvaluator.setRecommender(mRecommender);
+        mChannelRecordSortedMap.setRecommender(mRecommender);
+        mChannelRecordSortedMap.resetRandom(RecommendationUtils.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() {
+        assertEquals(Evaluator.NOT_RECOMMENDED, mEvaluator.evaluateChannel(INVALID_CHANNEL_ID));
+        assertEquals(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()));
+    }
+
+    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);
+        }
+    }
+}