1 files changed, 35 insertions, 15 deletions
diff --git a/src/tests/test_wav_dump.cc b/src/tests/test_wav_dump.cc
index c68578b..cc2de19 100644
--- a/src/tests/test_wav_dump.cc
+++ b/src/tests/test_wav_dump.cc
@@ -3,10 +3,12 @@
 
 #include "audio/audio.h"
 #include "audio/audio_engine.h"
+#include "audio/ring_buffer.h"
 #include "audio/wav_dump_backend.h"
 #include <assert.h>
 #include <stdio.h>
 #include <string.h>
+#include <vector>
 
 #if !defined(STRIP_ALL)
 
@@ -32,31 +34,48 @@ void test_wav_format_matches_live_audio() {
 
   const char* test_file = "test_format.wav";
 
+  // Initialize audio system
+  audio_init();
+
+  // Initialize AudioEngine
+  AudioEngine engine;
+  engine.init();
+
   // Create WAV dump backend
   WavDumpBackend wav_backend;
   wav_backend.set_output_file(test_file);
-  wav_backend.set_duration(2.0f); // Only 2 seconds for quick testing
-  audio_set_backend(&wav_backend);
+  wav_backend.init();
+  wav_backend.start();
 
-  // Initialize audio system (calls synth_init internally)
-  audio_init();
+  // Simulate 2 seconds of audio rendering (frontend-driven)
+  const float duration = 2.0f;
+  const float update_dt = 1.0f / 60.0f;
+  const int frames_per_update = (int)(32000 * update_dt);
+  const int samples_per_update = frames_per_update * 2; // Stereo
 
-  // Initialize AudioEngine (replaces direct synth_init/tracker_init)
-  AudioEngine engine;
-  engine.init();
+  AudioRingBuffer* ring_buffer = audio_get_ring_buffer();
+  std::vector<float> chunk_buffer(samples_per_update);
 
-  // Manually trigger some audio for testing
-  engine.update(0.0f); // Trigger patterns at t=0
+  float music_time = 0.0f;
+  for (float t = 0.0f; t < duration; t += update_dt) {
+    // Update audio engine (triggers patterns)
+    engine.update(music_time);
+    music_time += update_dt;
 
-  // Render short duration (1 second = 60 updates @ 60Hz)
-  for (int i = 0; i < 60; ++i) {
-    float t = i / 60.0f;
-    engine.update(t);
+    // Render audio ahead
+    audio_render_ahead(music_time, update_dt);
+
+    // Read from ring buffer
+    if (ring_buffer != nullptr) {
+      ring_buffer->read(chunk_buffer.data(), samples_per_update);
+    }
 
-    // Simulate audio render (WavDumpBackend will handle this in start())
+    // Write to WAV file
+    wav_backend.write_audio(chunk_buffer.data(), samples_per_update);
   }
 
-  audio_start(); // This triggers the actual WAV rendering
+  // Shutdown
+  wav_backend.shutdown();
   engine.shutdown();
   audio_shutdown();
 
@@ -146,6 +165,7 @@ void test_wav_format_matches_live_audio() {
 
   printf("  ✓ WAV format verified: stereo, 32kHz, 16-bit PCM\n");
   printf("  ✓ Matches live audio output configuration\n");
+  printf("  ✓ Backend is passive (frontend-driven)\n");
 }
 
 void test_wav_stereo_buffer_size() {