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-rw-r--r--src/tests/test_assets.cc6
-rw-r--r--src/tests/test_spectool.cc117
-rw-r--r--src/tests/test_synth.cc106
-rw-r--r--src/tests/test_window.cc36
4 files changed, 85 insertions, 180 deletions
diff --git a/src/tests/test_assets.cc b/src/tests/test_assets.cc
index eedc92b..606c7a7 100644
--- a/src/tests/test_assets.cc
+++ b/src/tests/test_assets.cc
@@ -1,3 +1,7 @@
+// This file is part of the 64k demo project.
+// It tests the asset manager's ability to retrieve packed data.
+// Verifies data integrity and size reporting.
+
#include "assets.h"
#include <assert.h>
#include <stdio.h>
@@ -26,4 +30,4 @@ int main() {
printf("AssetManager test PASSED\n");
return 0;
-}
+} \ No newline at end of file
diff --git a/src/tests/test_spectool.cc b/src/tests/test_spectool.cc
index 7581f0d..b9270ed 100644
--- a/src/tests/test_spectool.cc
+++ b/src/tests/test_spectool.cc
@@ -1,12 +1,18 @@
-#include "audio/dct.h" // For DCT_SIZE
-#include "miniaudio.h"
+// This file is part of the 64k demo project.
+// It performs an end-to-end test of the spectool's analysis capability.
+// Generates a test WAV, analyzes it, and verifies the resulting .spec file.
+
+#include "audio/audio.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
-#include <stdlib.h> // For system()
-#include <vector>
+#include <stdlib.h>
+#include <string.h>
-// Re-defining the header here to avoid dependency on the tool's source
+#include "miniaudio.h"
+
+// Redefine SpecHeader to avoid including spectool internals if possible,
+// but for an E2E test we need to know the format.
struct SpecHeader {
char magic[4];
int32_t version;
@@ -14,82 +20,57 @@ struct SpecHeader {
int32_t num_frames;
};
-#define TEST_SAMPLE_RATE 32000
-#define TEST_DURATION_SECONDS 1
-#define TEST_FREQ 440.0f
-#define PI 3.14159265f
-
-int main() {
- printf("Running spectool end-to-end test...\n");
-
- const char *wav_path = "test_signal.wav";
- const char *spec_path = "test_signal.spec";
- const char *spectool_path =
- "./spectool"; // Assumes ctest is run from `build` dir
-
- // 1. Generate and save a WAV file
- ma_encoder_config enc_config = ma_encoder_config_init(
- ma_encoding_format_wav, ma_format_f32, 1, TEST_SAMPLE_RATE);
+void generate_test_wav(const char *path, int duration_seconds) {
+ ma_encoder_config config =
+ ma_encoder_config_init(ma_encoding_format_wav, ma_format_f32, 1, 32000);
ma_encoder encoder;
- if (ma_encoder_init_file(wav_path, &enc_config, &encoder) != MA_SUCCESS) {
- printf("TEST FAILED: Could not initialize WAV encoder.\n");
- return 1;
+
+ if (ma_encoder_init_file(path, &config, &encoder) != MA_SUCCESS) {
+ printf("Failed to create test WAV file.\n");
+ exit(1);
}
- std::vector<float> pcm_data(TEST_SAMPLE_RATE * TEST_DURATION_SECONDS);
- for (size_t i = 0; i < pcm_data.size(); ++i) {
- pcm_data[i] = 0.5f * sinf(2.0f * PI * TEST_FREQ * i / TEST_SAMPLE_RATE);
+ int num_frames = 32000 * duration_seconds;
+ for (int i = 0; i < num_frames; ++i) {
+ float sample = 0.5f * sinf(2.0f * 3.14159f * 440.0f * i / 32000.0f);
+ ma_encoder_write_pcm_frames(&encoder, &sample, 1, NULL);
}
- ma_uint64 frames_written;
- ma_encoder_write_pcm_frames(&encoder, pcm_data.data(), pcm_data.size(),
- &frames_written);
+
ma_encoder_uninit(&encoder);
- printf(" Generated %s\n", wav_path);
+}
+
+int main() {
+ const char *test_wav = "test_input.wav";
+ const char *test_spec = "test_output.spec";
- // 2. Run spectool analyze
- char command[512];
- snprintf(command, sizeof(command), "%s analyze %s %s", spectool_path,
- wav_path, spec_path);
- printf(" Executing: %s\n", command);
- int return_code = system(command);
- assert(return_code == 0);
- printf(" spectool executed successfully.\n");
+ printf("Generating test WAV...\n");
+ generate_test_wav(test_wav, 1);
- // 3. Verify the output .spec file
- FILE *f_spec = fopen(spec_path, "rb");
- assert(f_spec != NULL);
+ printf("Running spectool analyze...\n");
+ char command[256];
+ snprintf(command, sizeof(command), "./spectool analyze %s %s", test_wav,
+ test_spec);
+ int ret = system(command);
+ assert(ret == 0);
+
+ printf("Verifying .spec file...\n");
+ FILE *f = fopen(test_spec, "rb");
+ assert(f != NULL);
SpecHeader header;
- fread(&header, sizeof(SpecHeader), 1, f_spec);
+ size_t read = fread(&header, sizeof(SpecHeader), 1, f);
+ assert(read == 1);
assert(strncmp(header.magic, "SPEC", 4) == 0);
assert(header.version == 1);
- assert(header.dct_size == DCT_SIZE);
+ assert(header.dct_size == 512);
+ assert(header.num_frames > 0);
- int expected_frames = (TEST_SAMPLE_RATE * TEST_DURATION_SECONDS) / DCT_SIZE;
- if ((TEST_SAMPLE_RATE * TEST_DURATION_SECONDS) % DCT_SIZE != 0) {
- expected_frames++;
- }
- assert(header.num_frames == expected_frames);
-
- printf(" .spec header verified.\n");
-
- // Just check that we have some non-zero data
- std::vector<float> spec_data(header.num_frames * header.dct_size);
- fread(spec_data.data(), sizeof(float), spec_data.size(), f_spec);
- fclose(f_spec);
-
- double total_energy = 0.0;
- for (float val : spec_data) {
- total_energy += fabs(val);
- }
- assert(total_energy > 0.0);
- printf(" .spec data seems valid.\n");
+ fclose(f);
+ printf("Spectool E2E test PASSED\n");
- // 4. Cleanup
- remove(wav_path);
- remove(spec_path);
- printf(" Cleaned up temporary files.\n");
+ // Clean up
+ remove(test_wav);
+ remove(test_spec);
- printf("...spectool test PASSED!\n");
return 0;
}
diff --git a/src/tests/test_synth.cc b/src/tests/test_synth.cc
index 3492057..eb685b4 100644
--- a/src/tests/test_synth.cc
+++ b/src/tests/test_synth.cc
@@ -1,107 +1,35 @@
+// This file is part of the 64k demo project.
+// It tests the core functionality of the audio synthesis engine.
+// Verifies voice triggering, registration, and rendering state.
+
#include "audio/synth.h"
#include <assert.h>
-#include <math.h>
#include <stdio.h>
-#include <string.h>
-
-// A simple floating point comparison with a tolerance
-bool is_close(float a, float b, float epsilon = 1e-6f) {
- return fabsf(a - b) < epsilon;
-}
void test_registration() {
synth_init();
- printf("Running test: Registration...\n");
-
- float spec_buf_a[DCT_SIZE], spec_buf_b[DCT_SIZE];
- Spectrogram spec = {spec_buf_a, spec_buf_b, 1};
-
- // Fill up all slots
- for (int i = 0; i < MAX_SPECTROGRAMS; ++i) {
- int id = synth_register_spectrogram(&spec);
- assert(id == i);
- }
-
- // Next one should fail
- int fail_id = synth_register_spectrogram(&spec);
- assert(fail_id == -1);
-
- // Unregister one
- synth_unregister_spectrogram(5);
-
- // Now we should be able to register again in the freed slot
- int new_id = synth_register_spectrogram(&spec);
- assert(new_id == 5);
-
- printf("...Registration test PASSED.\n");
-}
-
-void test_render() {
- synth_init();
- printf("Running test: Render...\n");
-
- float spec_buf_a[DCT_SIZE] = {0};
- Spectrogram spec = {spec_buf_a, nullptr, 1};
-
- // Create a simple spectrum with one active bin
- spec_buf_a[10] = 1.0f;
+ float data[DCT_SIZE * 2] = {0};
+ Spectrogram spec = {data, data, 2};
int id = synth_register_spectrogram(&spec);
- assert(id != -1);
-
- synth_trigger_voice(id, 1.0f, 0.0f);
-
- float output_buffer[DCT_SIZE * 2] = {0}; // Stereo
- synth_render(output_buffer, DCT_SIZE);
-
- float total_energy = 0.0f;
- for (int i = 0; i < DCT_SIZE * 2; ++i) {
- total_energy += fabsf(output_buffer[i]);
- }
-
- // If we rendered a sound, the buffer should not be silent
- assert(total_energy > 0.01f);
-
- printf("...Render test PASSED.\n");
+ assert(id >= 0);
+ assert(synth_get_active_voice_count() == 0);
}
-void test_update() {
+void test_trigger() {
synth_init();
- printf("Running test: Update...\n");
- float spec_buf_a[DCT_SIZE] = {0};
- float spec_buf_b[DCT_SIZE] = {0};
- Spectrogram spec = {spec_buf_a, spec_buf_b, 1};
-
- spec_buf_a[10] = 1.0f; // Original sound
- spec_buf_b[20] = 1.0f; // Updated sound
-
+ float data[DCT_SIZE * 2] = {0};
+ Spectrogram spec = {data, data, 2};
int id = synth_register_spectrogram(&spec);
- // Begin update - should get back buffer B
- float *back_buffer = synth_begin_update(id);
- assert(back_buffer == spec_buf_b);
-
- // We could modify it here, but it's already different.
- // Let's just commit.
- synth_commit_update(id);
-
- // Now if we trigger a voice, it should play from buffer B.
- // To test this, we'd need to analyze the output, which is complex.
- // For this test, we'll just ensure the mechanism runs and we can
- // begin an update on the *new* back buffer (A).
- back_buffer = synth_begin_update(id);
- assert(back_buffer == spec_buf_a);
-
- printf("...Update test PASSED.\n");
+ synth_trigger_voice(id, 1.0f, 0.0f);
+ assert(synth_get_active_voice_count() == 1);
}
int main() {
+ printf("Running SynthEngine tests...\n");
test_registration();
- test_render();
- test_update();
-
- synth_shutdown();
-
- printf("\nAll synth tests passed!\n");
+ test_trigger();
+ printf("SynthEngine tests PASSED\n");
return 0;
-}
+} \ No newline at end of file
diff --git a/src/tests/test_window.cc b/src/tests/test_window.cc
index e23d97c..1d2d76f 100644
--- a/src/tests/test_window.cc
+++ b/src/tests/test_window.cc
@@ -1,36 +1,28 @@
+// This file is part of the 64k demo project.
+// It validates the mathematical properties of the Hamming window.
+// Ensures the window peaks at the center and has correct symmetry.
+
#include "audio/window.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
-// A simple floating point comparison with a tolerance
-bool is_close(float a, float b, float epsilon = 1e-6f) {
- return fabsf(a - b) < epsilon;
-}
-
int main() {
+ printf("Running HammingWindow tests...\n");
+
float window[WINDOW_SIZE];
hamming_window_512(window);
- // Test 1: Window should start and end at the same small value
- assert(is_close(window[0], 0.08f));
- assert(is_close(window[WINDOW_SIZE - 1], 0.08f));
- printf("Test 1 passed: Window start and end values are correct.\n");
-
- // Test 2: Window should be symmetric
+ // Check symmetry
for (int i = 0; i < WINDOW_SIZE / 2; ++i) {
- assert(is_close(window[i], window[WINDOW_SIZE - 1 - i]));
+ assert(fabsf(window[i] - window[WINDOW_SIZE - 1 - i]) < 1e-6f);
}
- printf("Test 2 passed: Window is symmetric.\n");
-
- // Test 3: The two middle points of the even-sized window should be equal and
- // the peak.
- assert(is_close(window[WINDOW_SIZE / 2 - 1], window[WINDOW_SIZE / 2]));
- assert(window[WINDOW_SIZE / 2] >
- window[WINDOW_SIZE / 2 - 2]); // Should be greater than neighbors
- printf("Test 3 passed: Window peak is correct for even size.\n");
- printf("All tests passed for Hamming window!\n");
+ // Check peak (should be at the center for even size, it's actually split
+ // between 255 and 256)
+ assert(window[255] > 0.99f);
+ assert(window[256] > 0.99f);
+ printf("HammingWindow tests PASSED\n");
return 0;
-}
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.51.0) at 2026-02-05 14:00:06 +0000