| 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="author" title="Intel" href="http://www.intel.com/" /> |
| 6 | <link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/> |
| 7 | <title>This test validates the functionality of onresourcetimingbufferfull in resource timing.</title> |
| 8 | <script src="/resources/testharness.js"></script> |
| 9 | <script src="/resources/testharnessreport.js"></script> |
| 10 | <script src="resources/buffer-full-utilities.js"></script> |
| 11 | </head> |
| 12 | <body> |
| 13 | <script> |
| 14 | const resource_timing_buffer_size = 2; |
| 15 | let bufferFullCount = 0; |
| 16 | let eventFired = false; |
| 17 | setup(() => { |
| 18 | clearBufferAndSetSize(resource_timing_buffer_size); |
| 19 | performance.addEventListener('resourcetimingbufferfull', e => { |
| 20 | assert_equals(e.bubbles, false, "Event bubbles attribute is false"); |
| 21 | bufferFullCount++; |
| 22 | eventFired = true; |
| 23 | }); |
| 24 | }); |
| 25 | |
| 26 | let overflowTheBuffer = () => { |
| 27 | return new Promise(resolve => { |
| 28 | // This resource overflows the entry buffer, and goes into the secondary buffer. |
| 29 | appendScript('resources/empty_script.js', resolve); |
| 30 | }); |
| 31 | }; |
| 32 | |
| 33 | let testThatBufferContainsTheRightResources = () => { |
| 34 | assert_equals(performance.getEntriesByType('resource').length, resource_timing_buffer_size, 'There should only be |bufferSize| resource entries.'); |
| 35 | assert_equals(bufferFullCount, 1, 'onresourcetimingbufferfull should have been invoked once.'); |
| 36 | }; |
| 37 | |
| 38 | promise_test(async () => { |
| 39 | await fillUpTheBufferWithTwoResources('resources/empty.js'); |
| 40 | await overflowTheBuffer(); |
| 41 | await waitForEventToFire(); |
| 42 | testThatBufferContainsTheRightResources(); |
| 43 | }, "Test that a buffer full event does not bubble and that resourcetimingbufferfull is called only once per overflow"); |
| 44 | </script> |
| 45 | </body> |
| 46 | </html> |
