| <!DOCTYPE html> |
| <title>Test prerendering</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="resources/utils.js"></script> |
| <script src="/common/utils.js"></script> |
| |
| <body> |
| |
| <script> |
| promise_test(async t => { |
| assert_implements( |
| 'supports' in HTMLScriptElement, |
| 'HTMLScriptElement.supports is not supported'); |
| assert_implements( |
| HTMLScriptElement.supports('speculationrules'), |
| '<script type="speculationrules"> is not supported'); |
| |
| const prerender_ready_key = token(); |
| const prerender_loaded_key = token(); |
| const prerender_activated_key = token(); |
| const url = generateURL('resources/prerender-inner.html', |
| [prerender_ready_key, prerender_loaded_key, prerender_activated_key]); |
| |
| // TODO: This test expects that the browser always triggers prerendering when |
| // SpeculationRules is provided. But SpeculationRules allows browsers not to |
| // trigger the speculative resource loading even if SpeculationRules is |
| // specified. So we have to use a new WebDriver API that deterministically |
| // triggers prerendering. |
| // https://github.com/WICG/nav-speculation/blob/main/speculation-rules-testing.md |
| const script = document.createElement('script'); |
| script.type = 'speculationrules'; |
| script.text = `{"prerender": [{"source": "list", "urls": ["${url}"] }] }`; |
| document.head.appendChild(script); |
| |
| const ready_result = await nextValueFromServer(prerender_ready_key); |
| assert_equals(ready_result, 'ready'); |
| |
| attachFencedFrame(url); |
| |
| const loaded_or_acrivated_result = await Promise.race([ |
| nextValueFromServer(prerender_loaded_key), |
| nextValueFromServer(prerender_activated_key) |
| ]); |
| assert_equals(loaded_or_acrivated_result, 'loaded'); |
| }, 'Fenced Frame must not load prerendered page.'); |
| </script> |
| |
| </body> |
