| <?php |
| header("Link: </resources/dummy.css>;rel=preload;as=style", false); |
| header("Link: </resources/square.png>;rel=preload;as=image;media=(min-width: 1px)", false); |
| ?> |
| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="preload" href="/resources/dummy.js" as="script"> |
| <script> |
| var t = async_test('Makes sure that Link headers preload resources'); |
| </script> |
| <script src="/resources/slow-script.pl?delay=200"></script> |
| <script> |
| window.addEventListener("load", t.step_func(function() { |
| var nonMediaHeader = performance.getEntriesByName( |
| "http://127.0.0.1:8000/resources/dummy.css")[0]; |
| var mediaHeader = performance.getEntriesByName( |
| "http://127.0.0.1:8000/resources/square.png")[0]; |
| var markup = performance.getEntriesByName( |
| "http://127.0.0.1:8000/resources/dummy.js")[0]; |
| var normalResource = performance.getEntriesByName( |
| "http://127.0.0.1:8000/resources/testharness.js")[0]; |
| // The non-media header can be processed at commit time. |
| // The media header needs to tokenize the first chunk of html, and the |
| // markup still needs to be tokenized. |
| // Note: the link preloads can be preloaded before the normal resource |
| // because they don't need to wait for the document element to be |
| // available (ApplicationCache initialization time). |
| assert_true(markup.startTime >= nonMediaHeader.startTime, "Non media header image requested before markup"); |
| assert_true(mediaHeader.startTime >= nonMediaHeader.startTime, "Non media header requested before media header"); |
| assert_true(normalResource.startTime >= mediaHeader.startTime, "Media heaer requested before non-preload resource"); |
| assert_true(markup.startTime >= normalResource.startTime, "Markup preload request after non-preload resource with same priority that's declared before it"); |
| t.done(); |
| })); |
| </script> |
| </body> |
| </html> |
| |
