| /* |
| * Copyright (C) 2017 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.utils; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.junit.Assert.fail; |
| import static org.mockito.Mockito.never; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyZeroInteractions; |
| |
| import android.os.ParcelFileDescriptor; |
| import android.platform.test.annotations.Presubmit; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.mockito.Mock; |
| import org.mockito.MockitoAnnotations; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataOutputStream; |
| import java.io.EOFException; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Random; |
| |
| @SmallTest |
| @Presubmit |
| @RunWith(AndroidJUnit4.class) |
| public class FullBackupUtilsTest { |
| @Mock private ParcelFileDescriptor mParcelFileDescriptorMock; |
| @Mock private OutputStream mOutputStreamMock; |
| private File mTemporaryFile; |
| private ByteArrayOutputStream mByteArrayOutputStream; |
| private ParcelFileDescriptor mTemporaryFileDescriptor; |
| |
| @Before |
| public void setUp() throws Exception { |
| MockitoAnnotations.initMocks(this); |
| |
| mTemporaryFile = File.createTempFile("backup-data", ".txt"); |
| mByteArrayOutputStream = new ByteArrayOutputStream(); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| if (mTemporaryFileDescriptor != null) { |
| mTemporaryFileDescriptor.close(); |
| } |
| if (mTemporaryFile != null) { |
| mTemporaryFile.delete(); |
| } |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_inPipeIsNull_throwsNPE() throws Exception { |
| try { |
| FullBackupUtils.routeSocketDataToOutput(null, mOutputStreamMock); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_outNull_throwsNPE() throws Exception { |
| try { |
| FullBackupUtils.routeSocketDataToOutput(mParcelFileDescriptorMock, null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_emptyInput_throwsEOFException() throws Exception { |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| try { |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mOutputStreamMock); |
| fail(); |
| } catch (EOFException expected) { |
| } |
| |
| verifyZeroInteractions(mOutputStreamMock); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_incompleteChunkSizeInput_throwsEOFException() |
| throws Exception { |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeByte(100); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| try { |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mOutputStreamMock); |
| fail(); |
| } catch (EOFException expected) { |
| } |
| |
| verifyZeroInteractions(mOutputStreamMock); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_validEmptyInput_doesNotWriteAnything() throws Exception { |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(0); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, mOutputStreamMock); |
| |
| verifyZeroInteractions(mOutputStreamMock); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_notEnoughData_throwsEOFException() throws Exception { |
| byte[] data = createFakeDataArray(100); |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(data.length + 1); |
| outputStream.write(data); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| try { |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mByteArrayOutputStream); |
| fail(); |
| } catch (EOFException expected) { |
| } |
| |
| verify(mOutputStreamMock, never()).close(); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_oneSmallChunk_writesOutputCorrectly() throws Exception { |
| byte[] data = createFakeDataArray(100); |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(data.length); |
| outputStream.write(data); |
| outputStream.writeInt(0); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mByteArrayOutputStream); |
| |
| assertThat(mByteArrayOutputStream.toByteArray()).isEqualTo(data); |
| verify(mOutputStreamMock, never()).close(); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_oneLargeChunk_writesOutputCorrectly() throws Exception { |
| byte[] data = createFakeDataArray(128000); |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(data.length); |
| outputStream.write(data); |
| outputStream.writeInt(0); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mByteArrayOutputStream); |
| |
| assertThat(mByteArrayOutputStream.toByteArray()).isEqualTo(data); |
| verify(mOutputStreamMock, never()).close(); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_twoSmallChunks_writesOutputCorrectly() throws Exception { |
| byte[] data = createFakeDataArray(200); |
| int chunk1Length = 97; |
| int chunk2Length = data.length - chunk1Length; |
| |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(chunk1Length); |
| outputStream.write(data, 0, chunk1Length); |
| outputStream.writeInt(chunk2Length); |
| outputStream.write(data, chunk1Length, chunk2Length); |
| outputStream.writeInt(0); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mByteArrayOutputStream); |
| |
| assertThat(mByteArrayOutputStream.toByteArray()).isEqualTo(data); |
| verify(mOutputStreamMock, never()).close(); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| @Test |
| public void routeSocketDataToOutput_twoLargeChunks_writesOutputCorrectly() throws Exception { |
| byte[] data = createFakeDataArray(256000); |
| int chunk1Length = 127313; |
| int chunk2Length = data.length - chunk1Length; |
| |
| DataOutputStream outputStream = new DataOutputStream(new FileOutputStream(mTemporaryFile)); |
| outputStream.writeInt(chunk1Length); |
| outputStream.write(data, 0, chunk1Length); |
| outputStream.writeInt(chunk2Length); |
| outputStream.write(data, chunk1Length, chunk2Length); |
| outputStream.writeInt(0); |
| outputStream.close(); |
| |
| mTemporaryFileDescriptor = ParcelFileDescriptor.open(mTemporaryFile, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| |
| FullBackupUtils.routeSocketDataToOutput(mTemporaryFileDescriptor, |
| mByteArrayOutputStream); |
| |
| assertThat(mByteArrayOutputStream.toByteArray()).isEqualTo(data); |
| verify(mOutputStreamMock, never()).close(); |
| assertThat(mTemporaryFileDescriptor.getFileDescriptor().valid()).isTrue(); |
| } |
| |
| private static byte[] createFakeDataArray(int length) { |
| byte[] data = new byte[length]; |
| new Random(3742).nextBytes(data); |
| return data; |
| } |
| } |