44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
// Compares a performance entry to a predefined one
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// perfEntriesToCheck is an array of performance entries from the user agent
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// expectedEntries is an array of performance entries minted by the test
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function checkEntries(perfEntriesToCheck, expectedEntries) {
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function findMatch(pe) {
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// we match based on entryType and name
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for (var i = expectedEntries.length - 1; i >= 0; i--) {
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var ex = expectedEntries[i];
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if (ex.entryType === pe.entryType && ex.name === pe.name) {
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return ex;
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}
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}
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return null;
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}
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assert_equals(perfEntriesToCheck.length, expectedEntries.length, "performance entries must match");
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perfEntriesToCheck.forEach(function (pe1) {
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assert_not_equals(findMatch(pe1), null, "Entry matches");
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});
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}
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// Waits for performance.now to advance. Since precision reduction might
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// cause it to return the same value across multiple calls.
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function wait() {
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var now = performance.now();
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while (now === performance.now())
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continue;
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}
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// Ensure the entries list is sorted by startTime.
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function checkSorted(entries) {
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assert_not_equals(entries.length, 0, "entries list must not be empty");
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if (!entries.length)
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return;
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var sorted = false;
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var lastStartTime = entries[0].startTime;
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for (var i = 1; i < entries.length; ++i) {
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var currStartTime = entries[i].startTime;
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assert_less_than_equal(lastStartTime, currStartTime, "entry list must be sorted by startTime");
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lastStartTime = currStartTime;
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}
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}
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