user-timing-helper.js (1596B)
1 // Compares a list of performance entries to a predefined one. 2 // actualEntries is an array of performance entries from the user agent, 3 // and expectedEntries is an array of performance entries minted by the test. 4 // The comparison doesn't assert the order of the entries. 5 function checkEntries(actualEntries, expectedEntries) { 6 assert_equals(actualEntries.length, expectedEntries.length, 7 `The length of actual and expected entries should match. 8 actual: ${JSON.stringify(actualEntries)}, 9 expected: ${JSON.stringify(expectedEntries)}`); 10 const actualEntrySet = new Set(actualEntries.map(ae=>ae.name)); 11 assert_equals(actualEntrySet.size, actualEntries.length, `Actual entry names are not unique: ${JSON.stringify(actualEntries)}`); 12 const expectedEntrySet = new Set(expectedEntries.map(ee=>ee.name)); 13 assert_equals(expectedEntrySet.size, expectedEntries.length, `Expected entry names are not unique: ${JSON.stringify(expectedEntries)}`); 14 actualEntries.forEach(ae=>{ 15 const expectedEntry = expectedEntries.find(e=>e.name === ae.name); 16 assert_true(!!expectedEntry, `Entry name '${ae.name}' was not found.`); 17 checkEntry(ae, expectedEntry); 18 }); 19 } 20 21 function checkEntry(entry, {name, entryType, startTime, detail, duration}) { 22 assert_equals(entry.name, name); 23 assert_equals(entry.entryType, entryType); 24 if (startTime !== undefined) 25 assert_equals(entry.startTime, startTime); 26 if (detail !== undefined) 27 assert_equals(JSON.stringify(entry.detail), JSON.stringify(detail)); 28 if (duration !== undefined) 29 assert_equals(entry.duration, duration); 30 }