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function ok(a, msg) {
postMessage({type: "status", status: !!a, msg});
}
function is(a, b, msg) {
ok(a === b, msg);
}
function finish() {
postMessage({type: "finish"});
}
let isRounded = (x, expectedPrecision) => {
let rounded = (Math.floor(x / expectedPrecision) * expectedPrecision);
// First we do the perfectly normal check that should work just fine
if (rounded === x || x === 0)
return true;
// When we're diving by non-whole numbers, we may not get perfect
// multiplication/division because of floating points
if (Math.abs(rounded - x + expectedPrecision) < .0000001) {
return true;
} else if (Math.abs(rounded - x) < .0000001) {
return true;
}
// Then we handle the case where you're sub-millisecond and the timer is not
// We check that the timer is not sub-millisecond by assuming it is not if it
// returns an even number of milliseconds
if (expectedPrecision < 1 && Math.round(x) == x) {
if (Math.round(rounded) == x) {
return true;
}
}
ok(false, "Looming Test Failure, Additional Debugging Info: Expected Precision: " + expectedPrecision + " Measured Value: " + x +
" Rounded Vaue: " + rounded + " Fuzzy1: " + Math.abs(rounded - x + expectedPrecision) +
" Fuzzy 2: " + Math.abs(rounded - x));
return false;
};
function runRTPTests(expectedPrecision) {
// Try to add some entries.
performance.mark("Test");
performance.mark("Test-End");
performance.measure("Test-Measure", "Test", "Test-End");
// Check the entries in performance.getEntries/getEntriesByType/getEntriesByName.
is(performance.getEntries().length, 3, "In a worker, for reduceTimerPrecision: Incorrect number of entries for performance.getEntries() for workers: " + performance.getEntries().length);
for (var i = 0; i < 3; i++) {
let startTime = performance.getEntries()[i].startTime;
let duration = performance.getEntries()[i].duration;
ok(isRounded(startTime, expectedPrecision), "In a worker, for reduceTimerPrecision(" + expectedPrecision + "), performance.getEntries(" + i.toString() + ").startTime is not rounded: " + startTime.toString());
ok(isRounded(duration, expectedPrecision), "In a worker, for reduceTimerPrecision(" + expectedPrecision + "), performance.getEntries(" + i.toString() + ").duration is not rounded: " + duration.toString());
}
is(performance.getEntriesByType("mark").length, 2, "In a worker, for reduceTimerPrecision: Incorrect number of entries for performance.getEntriesByType() for workers: " + performance.getEntriesByType("resource").length);
is(performance.getEntriesByName("Test", "mark").length, 1, "In a worker, for reduceTimerPrecision: Incorrect number of entries for performance.getEntriesByName() for workers: " + performance.getEntriesByName("Test", "mark").length);
finish();
}
self.onmessage = function(e) {
runRTPTests(e.data.precision);
};
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