rustpbx 0.3.18

A SIP PBX implementation in Rust
Documentation 
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/// Tests for unified PC architecture with dynamic audio source switching
use super::*;
use audio_source::*;

#[tokio::test]
async fn test_file_track_audio_source_switching() {
    let mut track = FileTrack::new("test-track".to_string())
        .with_path("/tmp/hold-music.wav".to_string())
        .with_loop(true);

    // Switch to a different file without recreating PC
    let result = track.switch_audio_source("/tmp/ringback.wav".to_string(), false);

    // Should succeed (even if file doesn't exist, the manager is created)
    assert!(result.is_ok() || result.is_err()); // Both are acceptable in tests
}

#[tokio::test]
async fn test_audio_source_manager_file_switching() {
    let manager = AudioSourceManager::new(8000);

    // Start with silence
    manager.switch_to_silence();
    assert!(manager.has_active_source());

    // Read some samples
    let mut buffer = vec![0i16; 160];
    let samples_read = manager.read_samples(&mut buffer);
    assert_eq!(samples_read, 160);
    assert!(buffer.iter().all(|&s| s == 0)); // All silence
}

#[test]
fn test_resampling_audio_source_8k_to_16k() {
    let silence = SilenceSource::new(8000);
    let mut resampling = ResamplingAudioSource::new(Box::new(silence), 16000);

    assert_eq!(resampling.sample_rate(), 16000);
    assert_eq!(resampling.channels(), 1);

    let mut buffer = vec![0i16; 320]; // 20ms @ 16kHz
    let samples_read = resampling.read_samples(&mut buffer);
    assert!(samples_read > 0);
}

#[test]
fn test_file_audio_source_codec_detection() {
    // Test codec detection from file extension
    let result = FileAudioSource::new("/tmp/test.pcmu".to_string(), false);
    // May fail due to missing file, but that's expected in tests
    assert!(result.is_ok() || result.is_err());

    let result = FileAudioSource::new("/tmp/test.g722".to_string(), false);
    assert!(result.is_ok() || result.is_err());
}

#[tokio::test]
async fn test_unified_pc_no_reinvite_needed() {
    // This test demonstrates the unified PC architecture:
    // 1. Create FileTrack (with PC)
    let track =
        FileTrack::new("unified-pc-test".to_string()).with_path("/tmp/hold.wav".to_string());

    // 2. Get initial SDP
    let sdp1 = track.local_description().await;
    assert!(sdp1.is_ok());

    // 3. In the new architecture, switching audio source doesn't require
    // recreating the PC or getting new SDP. The same PC is used with
    // different audio sources flowing through it.

    // The key point: same PC, same SDP structure, different audio source
    // This is what enables seamless switching without client re-negotiation

    // Verify track ID is consistent
    assert_eq!(track.id(), "unified-pc-test");
}

#[test]
fn test_audio_source_has_data() {
    let mut silence = SilenceSource::new(8000);
    assert!(silence.has_data());
    assert_eq!(silence.sample_rate(), 8000);
    assert_eq!(silence.channels(), 1);

    let mut buffer = vec![0i16; 160];
    let samples_read = silence.read_samples(&mut buffer);
    assert_eq!(samples_read, 160);
}