src/tests/test_tracker.cc


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// This file is part of the 64k demo project.
// It tests the core functionality of the audio tracker engine.

#include "audio/gen.h"
#include "audio/synth.h"
#include "audio/tracker.h"
// #include "generated/music_data.h" // Will be generated by tracker_compiler
#include <assert.h>
#include <stdio.h>

// Forward declaration for generated data to avoid compilation issues before
// generation extern const NoteParams g_tracker_samples[]; extern const uint32_t
// g_tracker_samples_count; extern const TrackerPattern g_tracker_patterns[];
// extern const uint32_t g_tracker_patterns_count;
// extern const TrackerScore g_tracker_score;

void test_tracker_init() {
  synth_init();
  tracker_init();
  printf("Tracker init test PASSED\n");
}

void test_tracker_pattern_triggering() {
  synth_init();
  tracker_init();

  // Test 1: Trigger patterns at 0.0f
  tracker_update(0.0f);
  printf("Actual active voice count: %d\n", synth_get_active_voice_count());
  // Expect 4 voices (one for each pattern triggered at 0.0f:
  // crash, kick_basic, snare_basic, hihat_stressed)
  assert(synth_get_active_voice_count() == 4);

  // Test 2: Advance time slightly
  tracker_update(0.1f);
  assert(synth_get_active_voice_count() == 4);

  // Test 3: Advance further, no new triggers until 4.0f
  tracker_update(3.0f);
  // Voices from 0.0f triggers might have ended, but new ones haven't started.
  // synth_get_active_voice_count might drop if previous voices ended.
  // For this test, we assume voices triggered at 0.0f are still active for a
  // short duration. A more robust test would check for specific spectrograms or
  // mock synth. For now, we expect voices to still be somewhat active or new
  // ones to be triggered if there's overlap
  assert(synth_get_active_voice_count() > 0);

  printf("Tracker pattern triggering test PASSED\n");
}

int main() {
  printf("Running Tracker tests...\n");
  test_tracker_init();
  test_tracker_pattern_triggering();
  printf("Tracker tests PASSED\n");
  return 0;
}