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Testing Program Stream Extraction Functionality in SmartTube

This test suite validates the functionality of PsExtractor in ExoPlayer’s transport stream processing capabilities. It focuses on ensuring proper extraction of Program Stream (PS) formatted media content through comprehensive unit testing.

Test Coverage Overview

The test suite provides essential coverage for the PsExtractor component, focusing on sample PS file processing.

Validates basic PS extraction functionality
Tests proper handling of Program Stream formatted content
Verifies extractor initialization and processing

Implementation Analysis

The implementation utilizes JUnit4 with AndroidJUnit4 runner for Android-specific test execution. The testing approach employs ExtractorAsserts utility for standardized extractor behavior verification, demonstrating a clean and maintainable pattern for media extractor testing.

Technical Details

JUnit4 testing framework
AndroidJUnit4 test runner
ExtractorAsserts utility class
Sample PS file for test input
PsExtractor component under test

Best Practices Demonstrated

The test class exemplifies several testing best practices including clear test method naming, focused test scope, and proper use of test utilities. It demonstrates efficient test organization through:

Single responsibility principle in test methods
Proper test runner configuration
Standardized assertion patterns
Clear file resource management

yuliskov/smarttube

exoplayer-amzn-2.10.6/library/core/src/test/java/com/google/android/exoplayer2/extractor/ts/PsExtractorTest.java

            
/*
 * Copyright (C) 2016 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 androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.testutil.ExtractorAsserts;
import org.junit.Test;
import org.junit.runner.RunWith;

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

  @Test
  public void testSample() throws Exception {
    ExtractorAsserts.assertBehavior(PsExtractor::new, "ts/sample.ps");
  }
}