| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>Node.appendChild: inserting script and iframe</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <body> |
| <script> |
| |
| const kScriptContent = ` |
| state = iframe.contentWindow ? "iframe with content window" : "contentWindow is null"; |
| `; |
| |
| // This test ensures that a later-inserted script can observe an |
| // earlier-inserted iframe's contentWindow. |
| test(t => { |
| window.state = "script not run yet"; |
| window.iframe = document.createElement("iframe"); |
| t.add_cleanup(() => window.iframe.remove()); |
| |
| const script = document.createElement("script"); |
| script.textContent = kScriptContent; |
| |
| const div = document.createElement("div"); |
| div.appendChild(iframe); |
| div.appendChild(script); |
| |
| assert_equals(state, "script not run yet"); |
| document.body.appendChild(div); |
| assert_equals(state, "iframe with content window"); |
| }, "Script inserted after an iframe in the same appendChild() call can " + |
| "observe the iframe's non-null contentWindow"); |
| |
| // The below tests assert that an earlier-inserted script does not observe a |
| // later-inserted iframe's contentWindow. |
| test(t => { |
| window.state = "script not run yet"; |
| window.iframe = document.createElement("iframe"); |
| t.add_cleanup(() => window.iframe.remove()); |
| |
| const script = document.createElement("script"); |
| script.textContent = kScriptContent; |
| |
| const div = document.createElement("div"); |
| div.appendChild(script); |
| div.appendChild(iframe); |
| |
| assert_equals(state, "script not run yet"); |
| document.body.appendChild(div); |
| assert_equals(state, "contentWindow is null"); |
| }, "A script inserted atomically before an iframe (using a div) does not " + |
| "observe the iframe's contentWindow, since the 'script running' and " + |
| "'iframe setup' both happen in order, after DOM insertion completes"); |
| |
| test(t => { |
| window.state = "script not run yet"; |
| window.iframe = document.createElement("iframe"); |
| t.add_cleanup(() => window.iframe.remove()); |
| |
| const script = document.createElement("script"); |
| script.textContent = kScriptContent; |
| |
| const df = document.createDocumentFragment(); |
| df.appendChild(script); |
| df.appendChild(iframe); |
| |
| assert_equals(state, "script not run yet"); |
| document.body.appendChild(df); |
| assert_equals(state, "contentWindow is null"); |
| }, "A script inserted atomically before an iframe (using a DocumentFragment) " + |
| "does not observe the iframe's contentWindow, since the 'script running' " + |
| "and 'iframe setup' both happen in order, after DOM insertion completes"); |
| |
| test(t => { |
| window.state = "script not run yet"; |
| window.iframe = document.createElement("iframe"); |
| t.add_cleanup(() => window.iframe.remove()); |
| |
| const script = document.createElement("script"); |
| script.textContent = kScriptContent; |
| |
| assert_equals(state, "script not run yet"); |
| document.body.append(script, iframe); |
| |
| assert_equals(state, "contentWindow is null"); |
| }, "A script inserted atomically before an iframe (using a append() with " + |
| "multiple arguments) does not observe the iframe's contentWindow, since " + |
| "the 'script running' and 'iframe setup' both happen in order, after DOM " + |
| "insertion completes"); |
| </script> |
