| // META: script=/common/get-host-info.sub.js |
| // |
| // A test to verify that, when a srcdoc frame is created when it's parent |
| // has a non-default base URI, and is later restored from history, it has |
| // the same baseURI it started with, even if the parent has changed its own |
| // baseURI in the meantime. |
| // The parent always communicates with the child via postMessage since some |
| // of the test cases include the child being sandboxed. |
| |
| async function sendMessage(frame, msg) { |
| const result = new Promise(r => onmessage = e => r(e.data)); |
| frame.postMessage(msg, "*"); |
| return await result; |
| } |
| |
| const runTest = (description, sandbox_flags) => { |
| promise_test(async test => { |
| const original_parent_baseURI = document.baseURI; |
| // Create a URL for the child frame to navigate to. |
| const nav_target = |
| (new URL('./resources/send-back-base-url.html', location.href)).href; |
| |
| // Change parent to a non-default baseURI. |
| const base_element = document.createElement("base"); |
| base_element.href = get_host_info().REMOTE_ORIGIN; |
| document.head.appendChild(base_element); |
| assert_not_equals(document.baseURI, original_parent_baseURI, |
| "parent baseURI failed to change."); |
| const non_default_parent_baseURI = document.baseURI; |
| |
| // Create child and load a srcdoc frame. |
| const iframe = document.createElement("iframe"); |
| if (sandbox_flags !== null) |
| iframe.sandbox = sandbox_flags; |
| iframe.srcdoc = ` |
| <head> |
| <script> |
| addEventListener('message', (event) => { |
| if (event.data == 'report baseURI') |
| event.source.postMessage(document.baseURI, event.origin); |
| if (event.data == 'click link') |
| document.getElementById('link').click(); |
| }); |
| parent.postMessage('loaded', '*'); |
| </scr`+`ipt> |
| </head> |
| <body> |
| <a id='link' href='` + nav_target+ `'>link</a> |
| </body> |
| `; |
| |
| const child_loaded = new Promise(r => onmessage = e => r(e.data)); |
| document.body.appendChild(iframe); |
| assert_equals(await child_loaded, "loaded"); |
| |
| // Verify child's baseURI matches parent. |
| const child_base_uri = await sendMessage(frames[0], "report baseURI"); |
| assert_equals(child_base_uri, non_default_parent_baseURI); |
| |
| // Navigate child frame to non-srcdoc. |
| const child_loaded2 = await sendMessage(frames[0], "click link"); |
| assert_equals(child_loaded2, "loaded"); |
| const child_base_uri2 = await sendMessage(frames[0], "report baseURI"); |
| assert_not_equals(child_base_uri2, non_default_parent_baseURI); |
| assert_not_equals(child_base_uri2, original_parent_baseURI); |
| assert_equals(child_base_uri2, nav_target); |
| |
| // Parent resets its baseURI. |
| base_element.remove(); |
| assert_equals(document.baseURI, original_parent_baseURI, |
| "parent baseURI failed to reset."); |
| |
| // Navigate child back and verify its baseURI didn't change. |
| const child_loaded3 = new Promise(r => onmessage = e => r(e.data)); |
| window.history.back(); |
| assert_equals(await child_loaded3, "loaded"); |
| const child_base_uri3 = await sendMessage(frames[0], "report baseURI"); |
| assert_equals(child_base_uri3, non_default_parent_baseURI); |
| }, description); |
| } |
| |
| runTest("non-sandboxed srcdoc - parent changes baseURI",null); |
| runTest("sandboxed srcdoc - parent changes baseURI", "allow-scripts"); |
