looper/engine/tests/test_fifo.c

#include "test_common.h"

static int test_fifo_pipe(void) {
    printf("Test: FIFO pipe add/remove\n");
    pid_t pid = start_looper();
    if (pid < 0) return 1;
    jack_client_t *client;
    jack_status_t status;
    client = jack_client_open("test_fifo", JackNoStartServer, &status);
    if (!client) {
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        fprintf(stderr, "  SKIP: no JACK\n");
        return 1;
    }
    int fd = open("/tmp/looper_cmd", O_WRONLY);
    if (fd < 0) {
        perror("open fifo");
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    write(fd, "add\n", 4);
    safe_usleep(1500000);
    const char **ports = jack_get_ports(client, NULL, JACK_DEFAULT_AUDIO_TYPE, 0);
    int found = 0;
    if (ports) {
        for (int i = 0; ports[i]; i++) {
            if (strstr(ports[i], "looper:channel1_input")) {
                found = 1;
                break;
            }
        }
        jack_free(ports);
    }
    write(fd, "remove\n", 7);
    close(fd);
    safe_usleep(1500000);
    ports = jack_get_ports(client, NULL, JACK_DEFAULT_AUDIO_TYPE, 0);
    int still_found = 0;
    if (ports) {
        for (int i = 0; ports[i]; i++) {
            if (strstr(ports[i], "looper:channel1_input")) {
                still_found = 1;
                break;
            }
        }
        jack_free(ports);
    }
    jack_client_close(client);
    kill(pid, SIGTERM);
    waitpid(pid, NULL, 0);
    if (!found) {
        fprintf(stderr, "  FAIL: channel not added via FIFO\n");
        return 1;
    }
    if (still_found) {
        fprintf(stderr, "  FAIL: channel not removed via FIFO\n");
        return 1;
    }
    printf("  PASS (FIFO add/remove works)\n");
    return 0;
}

static int test_fifo_stop_bind_unbind(void) {
    printf("Test: FIFO stop, bind, unbind\n");
    pid_t pid = start_looper();
    if (pid < 0) return 1;
    if (init_persistent_midi_client() != 0) {
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        fprintf(stderr, "  FAIL: cannot initialise persistent MIDI client\n");
        return 1;
    }
    jack_client_t *client;
    jack_status_t status;
    client = jack_client_open("test_fifo_stop", JackNoStartServer, &status);
    if (!client) {
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        fprintf(stderr, "  SKIP: no JACK\n");
        return 1;
    }
    jack_port_t *audio_out = jack_port_register(client, "out",
                           JACK_DEFAULT_AUDIO_TYPE,
                           JackPortIsOutput, 0);
    jack_port_t *audio_in = jack_port_register(client, "in",
                           JACK_DEFAULT_AUDIO_TYPE,
                           JackPortIsInput, 0);
    if (!audio_out || !audio_in) {
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    safe_usleep(200000);
    char my_out[64], my_in[64];
    snprintf(my_out, sizeof(my_out), "test_fifo_stop:out");
    snprintf(my_in,  sizeof(my_in),  "test_fifo_stop:in");
    if (jack_connect(client, my_out, "looper:input") ||
        jack_connect(client, "looper:output", my_in)) {
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    if (send_jack_note_on("looper:control", 1, 127) != 0) {
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    safe_usleep(200000);
    int sr = jack_get_sample_rate(client);
    continuous_sine = 0;
    beep_remaining = (int)(0.1f * sr);
    bursts = 0;
    prev_above = 0;
    passthrough_output_port = audio_out;
    passthrough_input_port = audio_in;
    passthrough_phase = 0.0f;
    passthrough_freq = 440.0f;
    passthrough_sample_rate = sr;
    passthrough_total_samples = 0;
    passthrough_sum_sq = 0.0;
    passthrough_done = 0;
    jack_set_process_callback(client, passthrough_process, NULL);
    if (jack_activate(client)) {
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    safe_usleep(150000);
    int fd = open("/tmp/looper_cmd", O_WRONLY);
    if (fd < 0) {
        perror("open fifo");
        jack_deactivate(client);
        jack_client_close(client);
        kill(pid, SIGTERM); waitpid(pid, NULL, 0);
        return 1;
    }
    write(fd, "stop\n", 5);
    write(fd, "bind 0\n", 7);
    write(fd, "unbind\n", 7);
    close(fd);
    safe_usleep(500000);
    int bursts_after = bursts;
    jack_deactivate(client);
    jack_client_close(client);
    cleanup_persistent_midi_client();
    kill(pid, SIGTERM);
    waitpid(pid, NULL, 0);
    if (bursts_after < 1) {
        fprintf(stderr, "  FAIL: no burst detected (probably no recording)\n");
        return 1;
    }
    printf("  PASS (FIFO stop, bind, unbind executed)\n");
    return 0;
}

int test_fifo(void) {
    int failures = 0;
    failures += test_fifo_pipe();
    failures += test_fifo_stop_bind_unbind();
    return failures;
}