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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.android.adservices.service.topics.classifier;
import static com.android.adservices.service.stats.AdServicesStatsLog.AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__CLASSIFIER_TYPE__PRECOMPUTED_CLASSIFIER;
import static com.android.adservices.service.stats.AdServicesStatsLog.AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__ON_DEVICE_CLASSIFIER_STATUS__ON_DEVICE_CLASSIFIER_STATUS_NOT_INVOKED;
import static com.android.adservices.service.stats.AdServicesStatsLog.AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__PRECOMPUTED_CLASSIFIER_STATUS__PRECOMPUTED_CLASSIFIER_STATUS_FAILURE;
import static com.android.adservices.service.stats.AdServicesStatsLog.AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__PRECOMPUTED_CLASSIFIER_STATUS__PRECOMPUTED_CLASSIFIER_STATUS_SUCCESS;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.verify;
import android.content.Context;
import androidx.test.core.app.ApplicationProvider;
import com.android.adservices.data.topics.Topic;
import com.android.adservices.service.FlagsFactory;
import com.android.adservices.service.stats.AdServicesLogger;
import com.android.adservices.service.stats.EpochComputationClassifierStats;
import com.android.dx.mockito.inline.extended.ExtendedMockito;
import com.google.android.libraries.mobiledatadownload.file.SynchronousFileStorage;
import com.google.common.collect.ImmutableList;
import com.google.mobiledatadownload.ClientConfigProto.ClientFile;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.MockitoSession;
import org.mockito.quality.Strictness;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/** Precomputed Topics Classifier Test {@link PrecomputedClassifier}. */
public class PrecomputedClassifierTest {
private static final Context sContext = ApplicationProvider.getApplicationContext();
private static final String LABELS_FILE_PATH = "classifier/labels_topics.txt";
private static final String APPS_FILE_PATH = "classifier/precomputed_app_list.csv";
private static final String CLASSIFIER_ASSETS_METADATA_FILE_PATH =
"classifier/classifier_assets_metadata.json";
private static final String MODEL_FILE_PATH = "classifier/model.tflite";
private PrecomputedClassifier sPrecomputedClassifier;
private ModelManager mModelManager;
private MockitoSession mMockitoSession = null;
@Mock private SynchronousFileStorage mMockFileStorage;
@Mock Map<String, ClientFile> mMockDownloadedFiles;
@Mock AdServicesLogger mLogger;
@Before
public void setUp() throws IOException {
MockitoAnnotations.initMocks(this);
mMockitoSession =
ExtendedMockito.mockitoSession()
.spyStatic(FlagsFactory.class)
.spyStatic(ModelManager.class)
.initMocks(this)
.strictness(Strictness.WARN)
.startMocking();
ExtendedMockito.doReturn(FlagsFactory.getFlagsForTest()).when(FlagsFactory::getFlags);
ExtendedMockito.doReturn(null)
.when(() -> ModelManager.getDownloadedFiles(any(Context.class)));
mModelManager =
new ModelManager(
sContext,
LABELS_FILE_PATH,
APPS_FILE_PATH,
CLASSIFIER_ASSETS_METADATA_FILE_PATH,
MODEL_FILE_PATH,
mMockFileStorage,
mMockDownloadedFiles);
sPrecomputedClassifier = new PrecomputedClassifier(mModelManager, mLogger);
}
@After
public void tearDown() {
if (mMockitoSession != null) {
mMockitoSession.finishMocking();
}
}
@Test
public void testClassify_existingApp() {
ArgumentCaptor<EpochComputationClassifierStats> argument =
ArgumentCaptor.forClass(EpochComputationClassifierStats.class);
// Using sample App. This app has 5 classification topic.
List<Topic> expectedSampleAppTopics =
createTopics(Arrays.asList(10222, 10223, 10116, 10243, 10254));
Map<String, List<Topic>> expectedAppTopicsResponse = new HashMap<>();
expectedAppTopicsResponse.put(
"com.example.adservices.samples.topics.sampleapp", expectedSampleAppTopics);
Map<String, List<Topic>> testResponse =
sPrecomputedClassifier.classify(
new HashSet<>(
Arrays.asList("com.example.adservices.samples.topics.sampleapp")));
// The correct response body should be exactly the same as expectedAppTopicsResponse
assertThat(testResponse).isEqualTo(expectedAppTopicsResponse);
// Verify logged atom.
verify(mLogger).logEpochComputationClassifierStats(argument.capture());
assertThat(argument.getValue())
.isEqualTo(
EpochComputationClassifierStats.builder()
.setTopicIds(ImmutableList.of(10222, 10223, 10116, 10243, 10254))
.setBuildId(2)
.setAssetVersion("2")
.setClassifierType(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__CLASSIFIER_TYPE__PRECOMPUTED_CLASSIFIER)
.setOnDeviceClassifierStatus(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__ON_DEVICE_CLASSIFIER_STATUS__ON_DEVICE_CLASSIFIER_STATUS_NOT_INVOKED)
.setPrecomputedClassifierStatus(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__PRECOMPUTED_CLASSIFIER_STATUS__PRECOMPUTED_CLASSIFIER_STATUS_SUCCESS)
.build());
}
@Test
public void testClassify_nonExistingApp() {
ArgumentCaptor<EpochComputationClassifierStats> argument =
ArgumentCaptor.forClass(EpochComputationClassifierStats.class);
// Check the non-existing app "random_app"
Map<String, List<Topic>> testResponse =
sPrecomputedClassifier.classify(new HashSet<>(Arrays.asList("random_app")));
// The topics list of "random_app" should be empty
assertThat(testResponse.get("random_app")).isEmpty();
// Verify logged atom.
verify(mLogger).logEpochComputationClassifierStats(argument.capture());
assertThat(argument.getValue())
.isEqualTo(
EpochComputationClassifierStats.builder()
.setTopicIds(ImmutableList.of())
.setBuildId(2)
.setAssetVersion("2")
.setClassifierType(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__CLASSIFIER_TYPE__PRECOMPUTED_CLASSIFIER)
.setOnDeviceClassifierStatus(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__ON_DEVICE_CLASSIFIER_STATUS__ON_DEVICE_CLASSIFIER_STATUS_NOT_INVOKED)
.setPrecomputedClassifierStatus(
AD_SERVICES_EPOCH_COMPUTATION_CLASSIFIER_REPORTED__PRECOMPUTED_CLASSIFIER_STATUS__PRECOMPUTED_CLASSIFIER_STATUS_FAILURE)
.build());
}
@Test
public void testClassify_emptyStringApp() {
// Check if input contains empty string or null
Map<String, List<Topic>> testResponse =
sPrecomputedClassifier.classify(new HashSet<>(Arrays.asList("", null)));
// The response body should be empty
assertThat(testResponse).isEmpty();
}
@Test
public void testClassify_emptyAppList() {
// Check if input is empty
Map<String, List<Topic>> testResponse =
sPrecomputedClassifier.classify(new HashSet<>(new ArrayList<>()));
// The response body should be empty
assertThat(testResponse).isEmpty();
}
@Test
public void testGetTopTopics_legalInput() {
// construction the appTopics map so that when sorting by the number of occurrences,
// the order of topics are:
// topic1, topic2, topic3, topic4, topic5, ...,
Map<String, List<Topic>> appTopics = new HashMap<>();
appTopics.put("app1", createTopics(Arrays.asList(1, 2, 3, 4, 5)));
appTopics.put("app2", createTopics(Arrays.asList(1, 2, 3, 4, 5)));
appTopics.put("app3", createTopics(Arrays.asList(1, 2, 3, 4, 16)));
appTopics.put("app4", createTopics(Arrays.asList(1, 2, 3, 13, 17)));
appTopics.put("app5", createTopics(Arrays.asList(1, 2, 11, 14, 18)));
appTopics.put("app6", createTopics(Arrays.asList(1, 10, 12, 15, 19)));
// This test case should return top 5 topics from appTopics and 1 random topic
List<Topic> testResponse =
sPrecomputedClassifier.getTopTopics(
appTopics, /* numberOfTopTopics = */ 5, /* numberOfRandomTopics = */ 1);
assertThat(testResponse.get(0)).isEqualTo(createTopic(1));
assertThat(testResponse.get(1)).isEqualTo(createTopic(2));
assertThat(testResponse.get(2)).isEqualTo(createTopic(3));
assertThat(testResponse.get(3)).isEqualTo(createTopic(4));
assertThat(testResponse.get(4)).isEqualTo(createTopic(5));
// Check the random topic is not empty
// The random topic is at the end
assertThat(testResponse.get(5)).isNotNull();
}
private Topic createTopic(int topicId) {
return Topic.create(
topicId,
sPrecomputedClassifier.getLabelsVersion(),
sPrecomputedClassifier.getModelVersion());
}
private List<Topic> createTopics(List<Integer> topicIds) {
return topicIds.stream().map(this::createTopic).collect(Collectors.toList());
}
}
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