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| 1 | +// Copyright 2021 Google LLC |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | +package com.google.firebase.ml.modeldownloader; |
| 15 | + |
| 16 | +import static org.junit.Assert.assertEquals; |
| 17 | +import static org.junit.Assert.assertNotEquals; |
| 18 | +import static org.junit.Assert.assertNotNull; |
| 19 | +import static org.junit.Assert.assertNull; |
| 20 | +import static org.junit.Assert.assertTrue; |
| 21 | + |
| 22 | +import android.os.ParcelFileDescriptor; |
| 23 | +import androidx.test.core.app.ApplicationProvider; |
| 24 | +import androidx.test.runner.AndroidJUnit4; |
| 25 | +import com.google.android.gms.tasks.Task; |
| 26 | +import com.google.android.gms.tasks.Tasks; |
| 27 | +import com.google.firebase.FirebaseApp; |
| 28 | +import com.google.firebase.ml.modeldownloader.internal.ModelFileManager; |
| 29 | +import com.google.firebase.ml.modeldownloader.internal.SharedPreferencesUtil; |
| 30 | +import java.io.File; |
| 31 | +import java.util.Set; |
| 32 | +import java.util.concurrent.ExecutionException; |
| 33 | +import org.junit.After; |
| 34 | +import org.junit.Before; |
| 35 | +import org.junit.Test; |
| 36 | +import org.junit.runner.RunWith; |
| 37 | + |
| 38 | +/** |
| 39 | + * Integration tests for Get Model, download type LOCAL_MODEL. Only use getLocalModel* models for |
| 40 | + * this test. |
| 41 | + */ |
| 42 | +@RunWith(AndroidJUnit4.class) |
| 43 | +public class TestGetModelLocal { |
| 44 | + private FirebaseModelDownloader firebaseModelDownloader; |
| 45 | + private static final String MODEL_NAME_LOCAL = "getLocalModel"; |
| 46 | + private static final String MODEL_NAME_LOCAL_2 = "getLocalModel2"; |
| 47 | + private static final String MODEL_HASH = "origHash324"; |
| 48 | + private final CustomModel SETUP_LOADED_LOCAL_MODEL = |
| 49 | + new CustomModel(MODEL_NAME_LOCAL, MODEL_HASH, 100, 0); |
| 50 | + |
| 51 | + private FirebaseApp app; |
| 52 | + private File firstDeviceModelFile; |
| 53 | + private File firstLoadTempModelFile; |
| 54 | + private SharedPreferencesUtil sharedPreferencesUtil; |
| 55 | + |
| 56 | + @Before |
| 57 | + public void before() { |
| 58 | + app = FirebaseApp.initializeApp(ApplicationProvider.getApplicationContext()); |
| 59 | + firebaseModelDownloader = FirebaseModelDownloader.getInstance(app); |
| 60 | + |
| 61 | + sharedPreferencesUtil = new SharedPreferencesUtil(app); |
| 62 | + // reset shared preferences and downloads for models used by this test. |
| 63 | + firebaseModelDownloader.deleteDownloadedModel(MODEL_NAME_LOCAL); |
| 64 | + firebaseModelDownloader.deleteDownloadedModel(MODEL_NAME_LOCAL_2); |
| 65 | + |
| 66 | + // Equivalent to clearing the cache for the models used by this test. |
| 67 | + sharedPreferencesUtil.clearModelDetails(MODEL_NAME_LOCAL); |
| 68 | + sharedPreferencesUtil.clearModelDetails(MODEL_NAME_LOCAL_2); |
| 69 | + } |
| 70 | + |
| 71 | + @After |
| 72 | + public void teardown() { |
| 73 | + if (firstLoadTempModelFile != null) { |
| 74 | + firstLoadTempModelFile.deleteOnExit(); |
| 75 | + } |
| 76 | + if (firstDeviceModelFile != null) { |
| 77 | + firstDeviceModelFile.deleteOnExit(); |
| 78 | + } |
| 79 | + } |
| 80 | + |
| 81 | + private void setUpLoadedLocalModelWithFile() throws Exception { |
| 82 | + ModelFileManager fileManager = ModelFileManager.getInstance(); |
| 83 | + final File testDir = new File(app.getApplicationContext().getNoBackupFilesDir(), "tmpModels"); |
| 84 | + testDir.mkdirs(); |
| 85 | + // make sure the directory is empty. Doesn't recurse into subdirs, but that's OK since |
| 86 | + // we're only using this directory for this test and we won't create any subdirs. |
| 87 | + for (File f : testDir.listFiles()) { |
| 88 | + if (f.isFile()) { |
| 89 | + f.delete(); |
| 90 | + } |
| 91 | + } |
| 92 | + |
| 93 | + firstLoadTempModelFile = File.createTempFile("modelFile", ".tflite"); |
| 94 | + |
| 95 | + String expectedDestinationFolder = |
| 96 | + new File( |
| 97 | + app.getApplicationContext().getNoBackupFilesDir(), |
| 98 | + ModelFileManager.CUSTOM_MODEL_ROOT_PATH) |
| 99 | + .getAbsolutePath() |
| 100 | + + "/" |
| 101 | + + app.getPersistenceKey() |
| 102 | + + "/" |
| 103 | + + MODEL_NAME_LOCAL; |
| 104 | + // move test files to expected locations. |
| 105 | + ParcelFileDescriptor fd = |
| 106 | + ParcelFileDescriptor.open(firstLoadTempModelFile, ParcelFileDescriptor.MODE_READ_ONLY); |
| 107 | + |
| 108 | + firstDeviceModelFile = fileManager.moveModelToDestinationFolder(SETUP_LOADED_LOCAL_MODEL, fd); |
| 109 | + assertEquals(firstDeviceModelFile, new File(expectedDestinationFolder + "/0")); |
| 110 | + assertTrue(firstDeviceModelFile.exists()); |
| 111 | + fd.close(); |
| 112 | + |
| 113 | + fakePreloadedCustomModel( |
| 114 | + MODEL_NAME_LOCAL, |
| 115 | + SETUP_LOADED_LOCAL_MODEL.getModelHash(), |
| 116 | + 99, |
| 117 | + expectedDestinationFolder + "/0"); |
| 118 | + } |
| 119 | + |
| 120 | + @Test |
| 121 | + public void localModel_successTestPath() |
| 122 | + throws ExecutionException, InterruptedException, FirebaseMlException { |
| 123 | + |
| 124 | + // no models to start |
| 125 | + Set<CustomModel> listModelTask = getDownloadedModelList(); |
| 126 | + assertEquals(listModelTask.size(), 0); |
| 127 | + |
| 128 | + // download 2 models and check they are in the list. |
| 129 | + Task<CustomModel> modelTask = |
| 130 | + FirebaseModelDownloader.getInstance() |
| 131 | + .getModel( |
| 132 | + MODEL_NAME_LOCAL, |
| 133 | + DownloadType.LOCAL_MODEL, |
| 134 | + new CustomModelDownloadConditions.Builder().build()); |
| 135 | + Tasks.await(modelTask); |
| 136 | + assertTrue(modelTask.isSuccessful()); |
| 137 | + |
| 138 | + Task<CustomModel> modelUpdatedTask = |
| 139 | + FirebaseModelDownloader.getInstance() |
| 140 | + .getModel( |
| 141 | + MODEL_NAME_LOCAL_2, |
| 142 | + DownloadType.LOCAL_MODEL, |
| 143 | + new CustomModelDownloadConditions.Builder().build()); |
| 144 | + Tasks.await(modelUpdatedTask); |
| 145 | + assertTrue(modelUpdatedTask.isSuccessful()); |
| 146 | + |
| 147 | + listModelTask = getDownloadedModelList(); |
| 148 | + assertTrue(listModelTask.size() >= 2); |
| 149 | + assertTrue(listModelTask.contains(modelTask.getResult())); |
| 150 | + assertTrue(listModelTask.contains(modelUpdatedTask.getResult())); |
| 151 | + |
| 152 | + // delete the old model |
| 153 | + FirebaseModelDownloader.getInstance().deleteDownloadedModel(MODEL_NAME_LOCAL); |
| 154 | + listModelTask = getDownloadedModelList(); |
| 155 | + assertEquals(listModelTask.size(), 1); |
| 156 | + |
| 157 | + // verify model file was also deleted |
| 158 | + assertNull(modelTask.getResult().getFile()); |
| 159 | + } |
| 160 | + |
| 161 | + @Test |
| 162 | + public void localModel_fetchDueToMissingFile() |
| 163 | + throws ExecutionException, InterruptedException, FirebaseMlException { |
| 164 | + // no models to start |
| 165 | + Set<CustomModel> listModelTask = getDownloadedModelList(); |
| 166 | + assertEquals(listModelTask.size(), 0); |
| 167 | + |
| 168 | + fakePreloadedCustomModel(MODEL_NAME_LOCAL_2, MODEL_HASH, 123L, "fake/path/model/0"); |
| 169 | + listModelTask = getDownloadedModelList(); |
| 170 | + assertEquals(listModelTask.size(), 1); |
| 171 | + |
| 172 | + // bad path doesn't exist |
| 173 | + CustomModel model = listModelTask.iterator().next(); |
| 174 | + assertNull(model.getFile()); |
| 175 | + assertEquals(model.getModelHash(), MODEL_HASH); |
| 176 | + |
| 177 | + // download models and check that it gets new download since file is missing. |
| 178 | + Task<CustomModel> modelTask = |
| 179 | + FirebaseModelDownloader.getInstance() |
| 180 | + .getModel( |
| 181 | + MODEL_NAME_LOCAL_2, |
| 182 | + DownloadType.LOCAL_MODEL, |
| 183 | + new CustomModelDownloadConditions.Builder().build()); |
| 184 | + Tasks.await(modelTask); |
| 185 | + assertTrue(modelTask.isSuccessful()); |
| 186 | + |
| 187 | + listModelTask = getDownloadedModelList(); |
| 188 | + assertEquals(listModelTask.size(), 1); |
| 189 | + |
| 190 | + // updated path works. |
| 191 | + model = listModelTask.iterator().next(); |
| 192 | + assertNotNull(model.getFile()); |
| 193 | + assertNotEquals(model.getModelHash(), MODEL_HASH); |
| 194 | + } |
| 195 | + |
| 196 | + @Test |
| 197 | + public void localModel_preloadedDoNotFetchUpdate() throws Exception { |
| 198 | + // no models to start |
| 199 | + Set<CustomModel> listModelTask = getDownloadedModelList(); |
| 200 | + assertEquals(listModelTask.size(), 0); |
| 201 | + |
| 202 | + setUpLoadedLocalModelWithFile(); |
| 203 | + listModelTask = getDownloadedModelList(); |
| 204 | + assertEquals(listModelTask.size(), 1); |
| 205 | + |
| 206 | + // bad path doesn't exist |
| 207 | + CustomModel model = listModelTask.iterator().next(); |
| 208 | + assertNotNull(model.getFile()); |
| 209 | + assertEquals(model.getModelHash(), MODEL_HASH); |
| 210 | + |
| 211 | + // download models and check that it gets new download since file is missing. |
| 212 | + Task<CustomModel> modelTask = |
| 213 | + FirebaseModelDownloader.getInstance() |
| 214 | + .getModel( |
| 215 | + MODEL_NAME_LOCAL, |
| 216 | + DownloadType.LOCAL_MODEL, |
| 217 | + new CustomModelDownloadConditions.Builder().build()); |
| 218 | + Tasks.await(modelTask); |
| 219 | + assertTrue(modelTask.isSuccessful()); |
| 220 | + |
| 221 | + listModelTask = getDownloadedModelList(); |
| 222 | + assertEquals(listModelTask.size(), 1); |
| 223 | + |
| 224 | + // updated path works. |
| 225 | + model = listModelTask.iterator().next(); |
| 226 | + assertNotNull(model.getFile()); |
| 227 | + assertEquals(model.getModelHash(), MODEL_HASH); |
| 228 | + } |
| 229 | + |
| 230 | + private void fakePreloadedCustomModel(String modelName, String hash, long size, String filePath) { |
| 231 | + SharedPreferencesUtil sharedPreferencesUtil = new SharedPreferencesUtil(app); |
| 232 | + sharedPreferencesUtil.setLoadedCustomModelDetails( |
| 233 | + new CustomModel(modelName, hash, size, 0L, filePath)); |
| 234 | + } |
| 235 | + |
| 236 | + private Set<CustomModel> getDownloadedModelList() |
| 237 | + throws ExecutionException, InterruptedException { |
| 238 | + |
| 239 | + Task<Set<CustomModel>> modelSetTask = |
| 240 | + FirebaseModelDownloader.getInstance().listDownloadedModels(); |
| 241 | + |
| 242 | + Tasks.await(modelSetTask); |
| 243 | + if (modelSetTask.isSuccessful()) { |
| 244 | + return modelSetTask.getResult(); |
| 245 | + } |
| 246 | + throw new InternalError("listDownloadedModels unexpected failure."); |
| 247 | + } |
| 248 | +} |
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