content: /*
   * Copyright (C) 2018 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.chunking;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.testng.Assert.assertThrows;
  
  import android.platform.test.annotations.Presubmit;
  
  import com.google.common.primitives.Bytes;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.robolectric.RobolectricTestRunner;
  
  import java.io.ByteArrayOutputStream;
  
  @RunWith(RobolectricTestRunner.class)
  @Presubmit
  public class RawBackupWriterTest {
      private static final byte[] TEST_BYTES = {1, 2, 3, 4, 5, 6};
  
      private BackupWriter mWriter;
      private ByteArrayOutputStream mOutput;
  
      @Before
      public void setUp() {
          mOutput = new ByteArrayOutputStream();
          mWriter = new RawBackupWriter(mOutput);
      }
  
      @Test
      public void writeBytes_writesToOutputStream() throws Exception {
          mWriter.writeBytes(TEST_BYTES);
  
          assertThat(mOutput.toByteArray())
                  .asList()
                  .containsExactlyElementsIn(Bytes.asList(TEST_BYTES))
                  .inOrder();
      }
  
      @Test
      public void writeChunk_throwsUnsupportedOperationException() throws Exception {
          assertThrows(UnsupportedOperationException.class, () -> mWriter.writeChunk(0, 0));
      }
  
      @Test
      public void getBytesWritten_returnsTotalSum() throws Exception {
          mWriter.writeBytes(TEST_BYTES);
          mWriter.writeBytes(TEST_BYTES);
  
          long bytesWritten = mWriter.getBytesWritten();
  
          assertThat(bytesWritten).isEqualTo(2 * TEST_BYTES.length);
      }
  
      @Test
      public void flush_flushesOutputStream() throws Exception {
          mOutput = mock(ByteArrayOutputStream.class);
          mWriter = new RawBackupWriter(mOutput);
  
          mWriter.flush();
  
          verify(mOutput).flush();
      }
  }
  