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Testing WAV Audio Extraction Implementation in SmartTube

This test suite validates the WavExtractor functionality in ExoPlayer’s WAV audio processing capabilities. It ensures proper extraction and handling of WAV audio files through focused unit testing with the AndroidJUnit4 framework.

Test Coverage Overview

The test coverage focuses on WAV file extraction functionality in ExoPlayer’s core library.

Key areas covered include:

Sample WAV file processing
Extractor instantiation and behavior verification
Integration with ExoPlayer’s extraction framework

Implementation Analysis

The testing approach utilizes AndroidJUnit4 for Android-specific unit testing, combined with ExoPlayer’s custom ExtractorAsserts utility. The implementation follows a behavior-driven pattern, verifying the extractor’s handling of WAV format audio files through sample-based testing.

Technical patterns include:

Factory method pattern for extractor creation
Resource-based test file handling
Assertion-based behavior verification

Technical Details

Testing tools and configuration:

AndroidJUnit4 test runner
ExtractorAsserts utility class
Sample WAV file resources
JUnit @Test annotations
Android test extensions

Best Practices Demonstrated

The test suite exemplifies several testing best practices in Android audio processing validation.

Notable practices include:

Clean and focused test methods
Proper test resource management
Clear test naming conventions
Effective use of testing utilities
Isolation of extraction behavior

yuliskov/smarttube

exoplayer-amzn-2.10.6/library/core/src/test/java/com/google/android/exoplayer2/extractor/wav/WavExtractorTest.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.wav;

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 WavExtractor}. */
@RunWith(AndroidJUnit4.class)
public final class WavExtractorTest {

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