document-base-url-changes-about-srcdoc.https.window.js (1833B)
1 // Load about:srcdoc in a iframe. Check the document.baseURI is still 2 // correct after the parent changes its base URL.. 3 const runTest = (description, sandbox_flags) => { 4 promise_test(async test => { 5 // Create child. 6 const iframe = document.createElement("iframe"); 7 if (sandbox_flags !== null) 8 iframe.sandbox = sandbox_flags; 9 iframe.srcdoc = ` 10 <script> 11 addEventListener('message', (event) => { 12 if (event.data == 'report baseURI') 13 event.source.postMessage(document.baseURI, event.origin); 14 }); 15 parent.postMessage('loaded', '*'); 16 </scr`+`ipt> 17 `; 18 19 const child_loaded = new Promise(r => onmessage = e => r(e.data)); 20 document.body.appendChild(iframe); 21 assert_equals(await child_loaded, "loaded"); 22 23 // Verify child's baseURI matches parent. 24 const original_parent_baseURI = document.baseURI; 25 const child_base_uri = new Promise(r => onmessage = e => r(e.data)); 26 frames[0].postMessage("report baseURI", "*"); 27 assert_equals(await child_base_uri, original_parent_baseURI); 28 29 // Parent changes its baseURI, requests child to report. 30 const base_element = document.createElement("base"); 31 base_element.href = "https://foo.com"; 32 document.head.appendChild(base_element); 33 assert_not_equals(document.baseURI, original_parent_baseURI, 34 "parent baseURI failed to change."); 35 36 // Verify child's baseURI didn't change. 37 const child_base_uri2 = new Promise(r => onmessage = e => r(e.data)); 38 frames[0].postMessage("report baseURI", "*"); 39 assert_equals(await child_base_uri2, original_parent_baseURI); 40 41 // Cleanup. 42 base_element.remove(); 43 }, description); 44 } 45 46 runTest("non-sandboxed srcdoc - parent changes baseURI",null); 47 runTest("sandboxed srcdoc - parent changes baseURI", "allow-scripts");