| /* |
| * Copyright (C) 2019 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.server.backup.encryption.tasks; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.mockito.ArgumentMatchers.any; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.when; |
| import static org.testng.Assert.assertThrows; |
| |
| import android.platform.test.annotations.Presubmit; |
| |
| import com.android.server.backup.encryption.FullRestoreDownloader; |
| import com.android.server.backup.encryption.FullRestoreDownloader.FinishType; |
| |
| import com.google.common.io.Files; |
| |
| import org.junit.Before; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| import org.robolectric.RobolectricTestRunner; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Random; |
| |
| @RunWith(RobolectricTestRunner.class) |
| @Presubmit |
| public class FullRestoreToFileTaskTest { |
| private static final int TEST_RANDOM_SEED = 34; |
| private static final int TEST_MAX_CHUNK_SIZE_BYTES = 5; |
| private static final int TEST_DATA_LENGTH_BYTES = TEST_MAX_CHUNK_SIZE_BYTES * 20; |
| |
| @Rule public TemporaryFolder mTemporaryFolder = new TemporaryFolder(); |
| |
| private byte[] mTestData; |
| private File mTargetFile; |
| private FakeFullRestoreDownloader mFakeFullRestoreDownloader; |
| @Mock private FullRestoreDownloader mMockFullRestoreDownloader; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| |
| mTargetFile = mTemporaryFolder.newFile(); |
| |
| mTestData = new byte[TEST_DATA_LENGTH_BYTES]; |
| new Random(TEST_RANDOM_SEED).nextBytes(mTestData); |
| mFakeFullRestoreDownloader = new FakeFullRestoreDownloader(mTestData); |
| } |
| |
| private FullRestoreToFileTask createTaskWithFakeDownloader() { |
| return new FullRestoreToFileTask(mFakeFullRestoreDownloader, TEST_MAX_CHUNK_SIZE_BYTES); |
| } |
| |
| private FullRestoreToFileTask createTaskWithMockDownloader() { |
| return new FullRestoreToFileTask(mMockFullRestoreDownloader, TEST_MAX_CHUNK_SIZE_BYTES); |
| } |
| |
| @Test |
| public void restoreToFile_readsDataAndWritesToFile() throws Exception { |
| FullRestoreToFileTask task = createTaskWithFakeDownloader(); |
| task.restoreToFile(mTargetFile); |
| assertThat(Files.toByteArray(mTargetFile)).isEqualTo(mTestData); |
| } |
| |
| @Test |
| public void restoreToFile_noErrors_closesDownloaderWithFinished() throws Exception { |
| FullRestoreToFileTask task = createTaskWithMockDownloader(); |
| when(mMockFullRestoreDownloader.readNextChunk(any())).thenReturn(-1); |
| |
| task.restoreToFile(mTargetFile); |
| |
| verify(mMockFullRestoreDownloader).finish(FinishType.FINISHED); |
| } |
| |
| @Test |
| public void restoreToFile_ioException_closesDownloaderWithTransferFailure() throws Exception { |
| FullRestoreToFileTask task = createTaskWithMockDownloader(); |
| when(mMockFullRestoreDownloader.readNextChunk(any())).thenThrow(IOException.class); |
| |
| assertThrows(IOException.class, () -> task.restoreToFile(mTargetFile)); |
| |
| verify(mMockFullRestoreDownloader).finish(FinishType.TRANSFER_FAILURE); |
| } |
| |
| /** Fake package wrapper which returns data from a byte array. */ |
| private static class FakeFullRestoreDownloader extends FullRestoreDownloader { |
| |
| private final ByteArrayInputStream mData; |
| |
| FakeFullRestoreDownloader(byte[] data) { |
| // We override all methods of the superclass, so it does not require any collaborators. |
| super(); |
| this.mData = new ByteArrayInputStream(data); |
| } |
| |
| @Override |
| public int readNextChunk(byte[] buffer) throws IOException { |
| return mData.read(buffer); |
| } |
| |
| @Override |
| public void finish(FinishType finishType) { |
| // Do nothing. |
| } |
| } |
| } |