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.google.android.exoplayer2.upstream;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import android.net.Uri;
  import androidx.annotation.Nullable;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.C;
  import java.io.IOException;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Unit test for {@link BaseDataSource}. */
  @RunWith(AndroidJUnit4.class)
  public class BaseDataSourceTest {
  
    @Test
    public void dataTransfer_withLocalSource_isReported() throws IOException {
      TestSource testSource = new TestSource(/* isNetwork= */ false);
      TestTransferListener transferListener = new TestTransferListener();
      testSource.addTransferListener(transferListener);
  
      DataSpec dataSpec = new DataSpec(Uri.EMPTY);
      testSource.open(dataSpec);
      testSource.read(/* buffer= */ null, /* offset= */ 0, /* readLength= */ 100);
      testSource.close();
  
      assertThat(transferListener.lastTransferInitializingSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastTransferStartSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastBytesTransferredSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastTransferEndSource).isSameInstanceAs(testSource);
  
      assertThat(transferListener.lastTransferInitializingDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastTransferStartDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastBytesTransferredDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastTransferEndDataSpec).isEqualTo(dataSpec);
  
      assertThat(transferListener.lastTransferInitializingIsNetwork).isEqualTo(false);
      assertThat(transferListener.lastTransferStartIsNetwork).isEqualTo(false);
      assertThat(transferListener.lastBytesTransferredIsNetwork).isEqualTo(false);
      assertThat(transferListener.lastTransferEndIsNetwork).isEqualTo(false);
  
      assertThat(transferListener.lastBytesTransferred).isEqualTo(100);
    }
  
    @Test
    public void dataTransfer_withRemoteSource_isReported() throws IOException {
      TestSource testSource = new TestSource(/* isNetwork= */ true);
      TestTransferListener transferListener = new TestTransferListener();
      testSource.addTransferListener(transferListener);
  
      DataSpec dataSpec = new DataSpec(Uri.EMPTY);
      testSource.open(dataSpec);
      testSource.read(/* buffer= */ null, /* offset= */ 0, /* readLength= */ 100);
      testSource.close();
  
      assertThat(transferListener.lastTransferInitializingSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastTransferStartSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastBytesTransferredSource).isSameInstanceAs(testSource);
      assertThat(transferListener.lastTransferEndSource).isSameInstanceAs(testSource);
  
      assertThat(transferListener.lastTransferInitializingDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastTransferStartDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastBytesTransferredDataSpec).isEqualTo(dataSpec);
      assertThat(transferListener.lastTransferEndDataSpec).isEqualTo(dataSpec);
  
      assertThat(transferListener.lastTransferInitializingIsNetwork).isEqualTo(true);
      assertThat(transferListener.lastTransferStartIsNetwork).isEqualTo(true);
      assertThat(transferListener.lastBytesTransferredIsNetwork).isEqualTo(true);
      assertThat(transferListener.lastTransferEndIsNetwork).isEqualTo(true);
  
      assertThat(transferListener.lastBytesTransferred).isEqualTo(100);
    }
  
    private static final class TestSource extends BaseDataSource {
  
      public TestSource(boolean isNetwork) {
        super(isNetwork);
      }
  
      @Override
      public long open(DataSpec dataSpec) throws IOException {
        transferInitializing(dataSpec);
        transferStarted(dataSpec);
        return C.LENGTH_UNSET;
      }
  
      @Override
      public int read(byte[] buffer, int offset, int length) throws IOException {
        bytesTransferred(length);
        return length;
      }
  
      @Override
      @Nullable
      public Uri getUri() {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public void close() throws IOException {
        transferEnded();
      }
    }
  
    private static final class TestTransferListener implements TransferListener {
  
      public Object lastTransferInitializingSource;
      public DataSpec lastTransferInitializingDataSpec;
      public boolean lastTransferInitializingIsNetwork;
  
      public Object lastTransferStartSource;
      public DataSpec lastTransferStartDataSpec;
      public boolean lastTransferStartIsNetwork;
  
      public Object lastBytesTransferredSource;
      public DataSpec lastBytesTransferredDataSpec;
      public boolean lastBytesTransferredIsNetwork;
      public int lastBytesTransferred;
  
      public Object lastTransferEndSource;
      public DataSpec lastTransferEndDataSpec;
      public boolean lastTransferEndIsNetwork;
  
      @Override
      public void onTransferInitializing(DataSource source, DataSpec dataSpec, boolean isNetwork) {
        lastTransferInitializingSource = source;
        lastTransferInitializingDataSpec = dataSpec;
        lastTransferInitializingIsNetwork = isNetwork;
      }
  
      @Override
      public void onTransferStart(DataSource source, DataSpec dataSpec, boolean isNetwork) {
        lastTransferStartSource = source;
        lastTransferStartDataSpec = dataSpec;
        lastTransferStartIsNetwork = isNetwork;
      }
  
      @Override
      public void onBytesTransferred(
          DataSource source, DataSpec dataSpec, boolean isNetwork, int bytesTransferred) {
        lastBytesTransferredSource = source;
        lastBytesTransferredDataSpec = dataSpec;
        lastBytesTransferredIsNetwork = isNetwork;
        lastBytesTransferred = bytesTransferred;
      }
  
      @Override
      public void onTransferEnd(DataSource source, DataSpec dataSpec, boolean isNetwork) {
        lastTransferEndSource = source;
        lastTransferEndDataSpec = dataSpec;
        lastTransferEndIsNetwork = isNetwork;
      }
    }
  }
  