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// META: script=resources/user-timing-helper.js
function endTime(entry) {
return entry.startTime + entry.duration;
}
test(function() {
performance.clearMarks();
performance.clearMeasures();
const markEntry = performance.mark("mark", {startTime: 123});
const measureEntry = performance.measure("A", undefined, "mark");
assert_equals(measureEntry.startTime, 0);
assert_equals(endTime(measureEntry), markEntry.startTime);
}, "When the end mark is given and the start is unprovided, the end time of the measure entry should be the end mark's time, the start time should be 0.");
test(function() {
performance.clearMarks();
performance.clearMeasures();
const markEntry = performance.mark("mark", {startTime: 123});
const endMin = performance.now();
const measureEntry = performance.measure("A", "mark", undefined);
const endMax = performance.now();
assert_equals(measureEntry.startTime, markEntry.startTime);
assert_greater_than_equal(endTime(measureEntry), endMin);
assert_greater_than_equal(endMax, endTime(measureEntry));
}, "When the start mark is given and the end is unprovided, the start time of the measure entry should be the start mark's time, the end should be now.");
test(function() {
performance.clearMarks();
performance.clearMeasures();
const markEntry = performance.mark("mark", {startTime: 123});
const measureEntry = performance.measure("A", "mark", "mark");
assert_equals(endTime(measureEntry), markEntry.startTime);
assert_equals(measureEntry.startTime, markEntry.startTime);
}, "When start and end mark are both given, the start time and end time of the measure entry should be the the marks' time, repectively");
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