| <!DOCTYPE HTML> |
| <html> |
| <head onload> |
| <meta charset="utf-8" /> |
| <title>This test validates that synchronously adding entries in onresourcetimingbufferfull callback results in these entries being properly handled.</title> |
| <link rel="author" title="Intel" href="http://www.intel.com/" /> |
| <link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/append.js"></script> |
| </head> |
| <body> |
| <script> |
| const resource_timing_buffer_size = 1; |
| const t = async_test("Verify that adding entries and then increasing the size of the resource timing buffer results in entries added in the right order"); |
| performance.clearResourceTimings(); |
| performance.addEventListener('resourcetimingbufferfull', t.unreached_func("resourcetimingbufferfull should not fire")); |
| performance.setResourceTimingBufferSize(resource_timing_buffer_size); |
| // Scripts appended in JS to ensure setResourceTimingBufferSize is called before. |
| // This resource gets buffered in the resource timing entry buffer. |
| xhrScript('resources/empty.js?xhr'); |
| // These resources overflow the entry buffer, and goes into the secondary buffer. |
| xhrScript('resources/empty.js?xhr2'); |
| xhrScript('resources/empty.js?xhr3'); |
| performance.setResourceTimingBufferSize(3); |
| window.onload = t.step_timeout(()=>{ |
| let entries = performance.getEntriesByType('resource'); |
| assert_equals(entries.length, 3, |
| 'All resources should be in the buffer, since its size was increased'); |
| assert_true(entries[0].name.includes('empty.js?xhr'), "empty.js?xhr2 is in the entries buffer"); |
| assert_true(entries[1].name.includes('empty.js?xhr2'), "empty.js?xhr3 is in the entries buffer"); |
| assert_true(entries[2].name.includes('empty.js?xhr3'), "empty.js?xhr3 is in the entries buffer"); |
| t.done(); |
| }, 0); |
| </script> |
| </body> |
| </html> |
