eventcore/tests/0-timer.d

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/++ dub.sdl:
name "test"
dependency "eventcore" path=".."
+/
module test;
import eventcore.core;
import std.datetime : Clock, SysTime, UTC;
import std.stdio : writefln;
import core.time : Duration, msecs;
SysTime s_startTime;
int s_cnt = 0;
bool s_done;
void main()
{
s_startTime = Clock.currTime(UTC());
auto tm = eventDriver.timers.create();
eventDriver.timers.wait(tm, (tm) nothrow @safe {
Duration dur;
{
scope (failure) assert(false);
dur = Clock.currTime(UTC()) - 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 = Clock.currTime(UTC()) - s_startTime;
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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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;
}