| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Tests Stale While Revalidate works for scripts</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/utils.js"></script> |
| <body> |
| <script> |
| var last_modified; |
| var last_modified_count = 0; |
| var request_token = token(); |
| |
| // The script will call report via a uniquely generated ID on the subresource. |
| // If it is a cache hit the ID will be the same and the test will pass. |
| function report(mod) { |
| if (!last_modified) { |
| last_modified = mod; |
| last_modified_count = 1; |
| } else if (last_modified == mod) { |
| last_modified_count++; |
| } |
| } |
| |
| async_test(t => { |
| window.onload = t.step_func(() => { |
| step_timeout(() => { |
| var script = document.createElement("script"); |
| script.src = "resources/stale-script.py?token=" + request_token; |
| document.body.appendChild(script); |
| script.onload = t.step_func(() => { |
| assert_equals(last_modified_count, 2, "last modified"); |
| var checkResult = () => { |
| // We poll because we don't know when the revalidation will occur. |
| fetch("resources/stale-script.py?query&token=" + request_token).then(t.step_func((response) => { |
| var count = response.headers.get("Count"); |
| if (count == '2') { |
| t.done(); |
| } else { |
| t.step_timeout(checkResult, 25); |
| } |
| })); |
| }; |
| t.step_timeout(checkResult, 25); |
| }); |
| }, 0); |
| }); |
| }, 'Cache returns stale resource'); |
| |
| var script = document.createElement("script"); |
| script.src = "resources/stale-script.py?token=" + request_token; |
| document.body.appendChild(script); |
| </script> |
| </body> |
