| Dale | ed38a58 | 2017-12-14 08:43:20 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <html> |
| 3 | <head> |
| 4 | <title>time origin value manual test</title> |
| 5 | <link rel="help" href="https://w3c.github.io/hr-time/#time-origin-1"> |
| 6 | <link rel="prefetch" href="./resources/unload-a.html"> |
| 7 | <link rel="prefetch" href="./resources/unload-b.html"> |
| 8 | <link rel="prefetch" href="./resources/unload-c.html"> |
| 9 | </head> |
| 10 | <body> |
| 11 | <script src="/resources/testharness.js"></script> |
| 12 | <script src="/resources/testharnessreport.js"></script> |
| 13 | <script> |
| 14 | setup({ explicit_timeout: true }); |
| 15 | |
| 16 | const ACCEPTABLE_VARIANCE = 400; // ms |
| 17 | |
| 18 | const isRoughlyEqual = (a, b) => Math.abs(a - b) < ACCEPTABLE_VARIANCE; |
| 19 | |
| 20 | const timings = { a: {}, b: {}, c: {} }; |
| 21 | const t = async_test("hr-time time origin"); |
| 22 | |
| 23 | window.mark = msg => { |
| 24 | timings[msg.docName][msg.lifecycleEventName] = { |
| 25 | performanceNow: msg.performanceNow, |
| 26 | dateNow: msg.dateNow |
| 27 | }; |
| 28 | |
| 29 | if (msg.docName === "c" && msg.lifecycleEventName === "unload") { |
| 30 | setTimeout(makeAssertions, 0); |
| 31 | } |
| 32 | }; |
| 33 | |
| 34 | function makeAssertions () { |
| 35 | t.step(() => { |
| 36 | const loadTimeBetweenAandB = timings.b.load.dateNow - timings.a.unload.dateNow; |
| 37 | const loadTimeBetweenBandC = timings.c.load.dateNow - timings.b.unload.dateNow; |
| 38 | |
| 39 | assert_true( |
| 40 | isRoughlyEqual(loadTimeBetweenAandB, timings.b.load.performanceNow), |
| 41 | "Document in reused window's time origin should be time of close of pop-up box." |
| 42 | ); |
| 43 | assert_true( |
| 44 | isRoughlyEqual(loadTimeBetweenBandC, timings.c.load.performanceNow), |
| 45 | "Document in reused window's time origin should be time of close of pop-up box." |
| 46 | ); |
| 47 | assert_true( |
| 48 | !isRoughlyEqual(timings.a.unload.performanceNow, 0), |
| 49 | "Time origin during unload event should match that of rest of document." |
| 50 | ); |
| 51 | assert_true( |
| 52 | !isRoughlyEqual(timings.b.unload.performanceNow, 0), |
| 53 | "Time origin during unload event should match that of rest of document." |
| 54 | ); |
| 55 | assert_true( |
| 56 | !isRoughlyEqual(timings.c.unload.performanceNow, 0), |
| 57 | "Time origin during unload event should match that of rest of document." |
| 58 | ); |
| 59 | }); |
| 60 | t.done(); |
| 61 | } |
| 62 | </script> |
| 63 | |
| 64 | <h2>Description</h2> |
| 65 | <p>This test validates the behavior of <code>performance.now()</code> with respect to its time origin.</p> |
| 66 | <div id="log"> |
| 67 | <h2>Manual Test Steps</h2> |
| 68 | <ol> |
| 69 | <li><a href="resources/unload-a.html" target="_blank">Click here</a> |
| 70 | </ol> |
| 71 | </div> |
| 72 | </body> |
| 73 | <html> |
