module Tests;

import Core.Clock;
import Core.Test;
import Core.Types;
import ErrorSimulator;

using Core::Clock;

static void testUpdate() {
    Clock c;
    Core::testTrue(c.update() == 0);
    Core::testTrue(c.update() >= 0);
    Core::testTrue(c.update() >= 0);
    Core::testTrue(c.update() >= 0);
}

static void testUpdatesPerSecond() {
    Clock c;
    for(int i = 0; i < 1000; i++) {
        Core::testTrue(c.update() >= 0);
    }
    Core::testTrue(c.getUpdatesPerSecond() > 0.0f);
}

static void testSleep(i64 nanos) {
    Clock c;
    Core::testTrue(c.update() >= 0);
    Core::testFalse(Clock::sleepNanos(nanos));
    i64 n = c.update();
    Core::testTrue(n >= nanos && n <= nanos * 13 / 10);
}

static void testSleepMillis(i64 millis) {
    Clock c;
    Core::testTrue(c.update() >= 0);
    Core::testFalse(Clock::sleepMillis(millis));
    i64 n = c.update();
    i64 nanos = millis * 1'000'000;
    Core::testTrue(n >= nanos && n <= nanos * 13 / 10);
}

static void testFail() {
    Clock c;
#ifdef ERROR_SIMULATOR
    failStepThrow = 1;
    Core::test(-1l, c.update());
    failStepThrow = 1;
    Core::test(-1l, Clock::getNanos());
    failStepThrow = 1;
    Core::testTrue(Clock::sleepMillis(5));
    failStepThrow = 0;
#endif
}

void testClock(bool light) {
    testUpdate();
    testUpdatesPerSecond();
    testSleep(light ? 5'000'000 : 50'000'000);
    testSleep(light ? 50'000'000 : 1'300'000'000);
    testSleepMillis(light ? 5 : 50);
    testSleepMillis(light ? 50 : 1300);
    testFail();
}