late-once-pmb
v1.0.3
Published
Handle an event asap after it fired, even if that was in the past. A stripped-down version of event-historian-pmb's .asSoonAs().
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late-once-pmb
Handle an event asap after it fired, even if that was in the past. A stripped-down version of event-historian-pmb's .asSoonAs().
Usage
from test.usage.js:
var lateOnce = require('late-once-pmb'), onNext,
clock = require('event-test-clock-pmb').flavors.quarterSeconds();
onNext = {
begin: lateOnce(clock, 'beginTest'),
left: lateOnce(clock, 'mono'),
right: lateOnce(clock, 'mono'),
};
onNext.begin(test.log.l8r(['Test begins.']));
onNext.left(test.log.l8r(['L:']));
onNext.right(test.log.l8r(['R:']));
function addSubwoofer() {
onNext.subwoofer = lateOnce(clock, 'mono');
}
function lateSubscribe() {
onNext.left(test.log.l8r(['Late:']));
onNext.right(test.log.l8r(['lateR:']));
onNext.subwoofer(test.log.l8r(['sub:']));
}
clock.emit('beginTest', 'Godspeed!');
clock.on('fullSec', function (t) { test.log({ time_sec: t }); });
clock.schedule([ 'abs',
1, function () { clock.emit('mono', 'do'); },
2, function () { clock.emit('mono', 're'); },
3, function () { clock.emit('mono', 'mi'); },
4, addSubwoofer,
5, lateSubscribe,
6, function () { clock.emit('mono', 'fa'); },
7, function () { clock.emit('mono', 'so'); },
9, function () { clock.emit('mono', 'la'); },
10, lateSubscribe,
11, function () { clock.emit('mono', 'ti'); },
13, function () { clock.emit('beginTest', 'again!'); },
15, function () { test.verify(); },
]);
test.verify = function () {
clock.stop();
equal.lists(test.log(), [
[ 'Test begins.', 'Godspeed!' ],
[ 'L:', 'do' ], [ 'R:', 'do' ],
{ time_sec: 1 },
[ 'Late:', 'do' ], [ 'lateR:', 'do' ], [ 'sub:', 'fa' ],
{ time_sec: 2 },
[ 'Late:', 'do' ], [ 'lateR:', 'do' ], [ 'sub:', 'fa' ],
{ time_sec: 3 },
]);
test.ok();
};
Known issues
- needs more/better tests and docs
Related packages
future-on-pmb
: Pre-subscribe to a potential EventEmitter independent of whether it already exists.
License
ISC