| <html> |
| <head> |
| <link rel="help" href="https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/ResourceTiming/Overview.html#extensions-performance-interface"> |
| <script src="/js-test-resources/js-test.js"></script> |
| <script> |
| description("This test checks that Performance inherits EventTarget and that addEventListener() works for resourcetimingbufferfull events."); |
| window.jsTestIsAsync = true; |
| var bufferFullCount = 0; |
| var parameter; |
| |
| function onBufferFull(event) { |
| shouldBeNull('performance.onresourcetimingbufferfull'); |
| parameter = event; |
| shouldBe('parameter.__proto__', 'Event.prototype'); |
| bufferFullCount++; |
| } |
| |
| shouldBe('Performance.prototype.__proto__', 'EventTarget.prototype'); |
| |
| performance.addEventListener('resourcetimingbufferfull', onBufferFull); |
| shouldBeNull('performance.onresourcetimingbufferfull'); |
| performance.setResourceTimingBufferSize(2); |
| </script> |
| </head> |
| <body> |
| <script> |
| function test() { |
| // Make sure the onBufferFull callback was called exactly 1 time. |
| shouldBe('bufferFullCount', '1'); |
| performance.removeEventListener('resourcetimingbufferfull', onBufferFull); |
| finishJSTest(); |
| } |
| |
| window.onload = test; |
| </script> |
| <script src="resources/empty-script.js"></script> |
| </body> |
| </html> |
