| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 1 | <!DOCTYPE HTML> |
| 2 | <html> |
| 3 | <head> |
| 4 | <meta charset="utf-8"> |
| 5 | <link rel="help" href="https://w3c.github.io/resource-timing/#dom-performance-setresourcetimingbuffersize"> |
| 6 | <title>This test validates that setResourceTimingBufferFull behaves appropriately when set to the current buffer level.</title> |
| 7 | <script src="/resources/testharness.js"></script> |
| 8 | <script src="/resources/testharnessreport.js"></script> |
| 9 | <script src="resources/buffer-full-utilities.js"></script> |
| 10 | </head> |
| 11 | <body> |
| 12 | <script> |
| 13 | let eventFired = false; |
| 14 | let loadRandomResource = () => { |
| Ben Kelly | c8de5e1 | 2019-07-10 18:52:03 | [diff] [blame] | 15 | return fetch(window.location.href + "?" + Math.random()).then(r => r.text()); |
| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 16 | } |
| 17 | |
| 18 | setup(() => { |
| 19 | // Get the browser into a consistent state. |
| 20 | clearBufferAndSetSize(100); |
| 21 | }); |
| 22 | |
| 23 | let loadResourcesToFillFutureBuffer = () => { |
| 24 | return new Promise(resolve => { |
| 25 | // Gather up 3 Resource Entries to kick off the rest of test behavior. |
| 26 | let resources = 0; |
| 27 | let observer = new PerformanceObserver(function(list) { |
| 28 | resources += list.getEntriesByType("resource").length; |
| 29 | if (resources !== 3) |
| 30 | return; |
| 31 | observer.disconnect(); |
| 32 | resolve(); |
| 33 | }); |
| 34 | observer.observe({entryTypes: ["resource"]}); |
| 35 | for (let i = 0; i < 3; ++i) |
| 36 | loadRandomResource(); |
| 37 | }); |
| 38 | }; |
| 39 | |
| 40 | let setBufferFullEventAndBufferSize = () => { |
| 41 | performance.setResourceTimingBufferSize(3); |
| 42 | performance.onresourcetimingbufferfull = function() { |
| 43 | eventFired = true; |
| 44 | performance.clearResourceTimings(); |
| 45 | }; |
| 46 | }; |
| 47 | |
| 48 | let clearAndAddAnotherEntryToBuffer = () => { |
| 49 | return new Promise(resolve => { |
| 50 | performance.clearResourceTimings(); |
| 51 | loadRandomResource().then(resolve); |
| 52 | }); |
| 53 | }; |
| 54 | |
| 55 | let testThatEntryWasAdded = () => { |
| Will Hawkins | 636761d | 2019-04-16 09:24:10 | [diff] [blame] | 56 | let tries = 1; |
| 57 | let maxTries = 5; |
| 58 | return waitUntilConditionIsMet( function() { |
| 59 | if (performance.getEntriesByType("resource").length) { |
| 60 | return true; |
| 61 | } else { |
| 62 | if (tries < maxTries) { |
| 63 | tries++; |
| 64 | return false; |
| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 65 | } else { |
| Will Hawkins | 636761d | 2019-04-16 09:24:10 | [diff] [blame] | 66 | return true; |
| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 67 | } |
| 68 | } |
| Will Hawkins | 636761d | 2019-04-16 09:24:10 | [diff] [blame] | 69 | }).then( () => { |
| 70 | assert_true((performance.getEntriesByType("resource").length) === 1); |
| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 71 | }); |
| 72 | }; |
| 73 | |
| 74 | promise_test(async () => { |
| 75 | await loadResourcesToFillFutureBuffer(); |
| 76 | setBufferFullEventAndBufferSize(); |
| 77 | // Overflow the buffer. |
| 78 | await loadRandomResource(); |
| 79 | await waitForEventToFire(); |
| 80 | await clearAndAddAnotherEntryToBuffer(); |
| Yoav Weiss | a689005 | 2018-12-21 14:08:57 | [diff] [blame] | 81 | // Since we have no strict guarantees when an entry will be added to the |
| 82 | // buffer, waiting till next task to try to avoid flakiness. |
| Yoav Weiss | 79001b1 | 2018-12-12 17:16:56 | [diff] [blame] | 83 | await testThatEntryWasAdded(); |
| 84 | }, "Test that entry was added to the buffer after a buffer full event"); |
| 85 | </script> |
