measure-l3.any.js (1751B)
1 // META: script=resources/user-timing-helper.js 2 3 function endTime(entry) { 4 return entry.startTime + entry.duration; 5 } 6 7 test(function() { 8 performance.clearMarks(); 9 performance.clearMeasures(); 10 const markEntry = performance.mark("mark", {startTime: 123}); 11 const measureEntry = performance.measure("A", undefined, "mark"); 12 assert_equals(measureEntry.startTime, 0); 13 assert_equals(endTime(measureEntry), markEntry.startTime); 14 }, "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."); 15 16 test(function() { 17 performance.clearMarks(); 18 performance.clearMeasures(); 19 const markEntry = performance.mark("mark", {startTime: 123}); 20 const endMin = Number(performance.now().toFixed(2)); 21 const measureEntry = performance.measure("A", "mark", undefined); 22 const endMax = Number(performance.now().toFixed(2)); 23 assert_equals(measureEntry.startTime, markEntry.startTime); 24 assert_greater_than_equal(Number(endTime(measureEntry).toFixed(2)), endMin); 25 assert_greater_than_equal(endMax, Number(endTime(measureEntry).toFixed(2))); 26 }, "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."); 27 28 test(function() { 29 performance.clearMarks(); 30 performance.clearMeasures(); 31 const markEntry = performance.mark("mark", {startTime: 123}); 32 const measureEntry = performance.measure("A", "mark", "mark"); 33 assert_equals(endTime(measureEntry), markEntry.startTime); 34 assert_equals(measureEntry.startTime, markEntry.startTime); 35 }, "When start and end mark are both given, the start time and end time of the measure entry should be the marks' time, repectively");