eventcore/tests/0-timer.d

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/++ dub.sdl:
name "test"
dependency "eventcore" path=".."
+/
module test;
import eventcore.core;
import core.time : Duration, MonoTime, msecs;
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import std.stdio : writefln;
MonoTime s_startTime;
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int s_cnt = 0;
bool s_done;
void main()
{
s_startTime = MonoTime.currTime();
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auto tm = eventDriver.timers.create();
eventDriver.timers.wait(tm, (tm) nothrow @safe {
Duration dur;
{
scope (failure) assert(false);
dur = MonoTime.currTime() - s_startTime;
}
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try {
assert(dur > 1200.msecs, (dur - 1200.msecs).toString());
assert(dur < 1300.msecs, (dur - 1200.msecs).toString());
} catch (Exception e) assert(false, e.msg);
s_startTime += dur;
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eventDriver.timers.set(tm, 300.msecs, 300.msecs);
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void secondTier(TimerID timer) nothrow @safe {
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try {
auto dur = MonoTime.currTime() - s_startTime;
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s_cnt++;
assert(dur > 300.msecs * s_cnt, (dur - 300.msecs * s_cnt).toString());
assert(dur < 300.msecs * s_cnt + 100.msecs, (dur - 300.msecs * s_cnt).toString());
assert(s_cnt <= 3);
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if (s_cnt == 3) {
s_done = true;
eventDriver.timers.stop(timer);
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} else eventDriver.timers.wait(tm, &secondTier);
} catch (Exception e) {
assert(false, e.msg);
}
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}
eventDriver.timers.wait(tm, &secondTier);
});
eventDriver.timers.set(tm, 1200.msecs, 0.msecs);
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// test if stop() produces a callback with fire==false
bool got_event = false;
auto tm2 = eventDriver.timers.create();
eventDriver.timers.wait(tm2, (t, fired) { assert(!fired); got_event = true; });
eventDriver.timers.set(tm2, 100.msecs, 0.msecs);
eventDriver.timers.stop(tm2);
assert(got_event);
// test that cancelWait() does not produce a callback
eventDriver.timers.wait(tm2, (t, fired) { assert(false); });
eventDriver.timers.set(tm2, 100.msecs, 0.msecs);
eventDriver.timers.cancelWait(tm2);
eventDriver.timers.stop(tm2);
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ExitReason er;
do er = eventDriver.core.processEvents(Duration.max);
while (er == ExitReason.idle);
assert(er == ExitReason.outOfWaiters);
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assert(s_done);
s_done = false;
}