tree/library/extractor/src/test/java/com/google/android/exoplayer2/extractor/ts/PsDurationReaderTest.java

/*
 * 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.extractor.ts;

import static com.google.common.truth.Truth.assertThat;

import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.extractor.Extractor;
import com.google.android.exoplayer2.extractor.PositionHolder;
import com.google.android.exoplayer2.testutil.FakeExtractorInput;
import com.google.android.exoplayer2.testutil.TestUtil;
import java.io.IOException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

/** Unit test for {@link PsDurationReader}. */
@RunWith(AndroidJUnit4.class)
public final class PsDurationReaderTest {

  private PsDurationReader tsDurationReader;
  private PositionHolder seekPositionHolder;

  @Before
  public void setUp() {
    tsDurationReader = new PsDurationReader();
    seekPositionHolder = new PositionHolder();
  }

  @Test
  public void isDurationReadPending_returnFalseByDefault() {
    assertThat(tsDurationReader.isDurationReadFinished()).isFalse();
  }

  @Test
  public void readDuration_returnsCorrectDuration() throws IOException {
    FakeExtractorInput input =
        new FakeExtractorInput.Builder()
            .setData(
                TestUtil.getByteArray(
                    ApplicationProvider.getApplicationContext(), "ts/sample_h262_mpeg_audio.ps"))
            .build();

    int result = Extractor.RESULT_CONTINUE;
    while (!tsDurationReader.isDurationReadFinished()) {
      result = tsDurationReader.readDuration(input, seekPositionHolder);
      if (result == Extractor.RESULT_SEEK) {
        input.setPosition((int) seekPositionHolder.position);
      }
    }
    assertThat(result).isNotEqualTo(Extractor.RESULT_END_OF_INPUT);
    assertThat(tsDurationReader.getDurationUs()).isEqualTo(766);
  }

  @Test
  public void readDuration_midStream_returnsCorrectDuration() throws IOException {
    FakeExtractorInput input =
        new FakeExtractorInput.Builder()
            .setData(
                TestUtil.getByteArray(
                    ApplicationProvider.getApplicationContext(), "ts/sample_h262_mpeg_audio.ps"))
            .build();

    input.setPosition(1234);
    int result = Extractor.RESULT_CONTINUE;
    while (!tsDurationReader.isDurationReadFinished()) {
      result = tsDurationReader.readDuration(input, seekPositionHolder);
      if (result == Extractor.RESULT_SEEK) {
        input.setPosition((int) seekPositionHolder.position);
      }
    }
    assertThat(result).isNotEqualTo(Extractor.RESULT_END_OF_INPUT);
    assertThat(tsDurationReader.getDurationUs()).isEqualTo(766);
  }
}