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Bug 1802241: Add a test case for updating cached bounds on an in-process iframe DocAccessible while its OuterDocAccessible is being re-created. r=morgan

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Previously, this test case caused an assertion, but that was fixed in bug 1792120.
We also ensure the x and y are the same before an dafter the re-creation.
This verifies that we aren't losing the iframe's border/padding.

Differential Revision: https://phabricator.services.mozilla.com/D164879
This commit is contained in:
James Teh 2022-12-17 02:09:12 +00:00
parent b0e11e12be
commit 4c3d8e7a36
1 changed files with 45 additions and 0 deletions
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45
accessible/tests/browser/bounds/browser_test_iframe_transform.js
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@ -163,3 +163,48 @@ addAccessibleTask(
iframeAttrs: { style: "width: 0;" },
}
);
/**
* Test document bounds after re-creating an iframe.
*/
addAccessibleTask(
`
<ol id="ol">
<iframe id="iframe" src="data:text/html,"></iframe>
</ol>
`,
async function(browser, docAcc) {
let iframeDoc = findAccessibleChildByID(docAcc, "iframe").firstChild;
ok(iframeDoc, "Got the iframe document");
const origX = {};
const origY = {};
iframeDoc.getBounds(origX, origY, {}, {});
let reordered = waitForEvent(EVENT_REORDER, docAcc);
await invokeContentTask(browser, [], () => {
// This will cause a bounds cache update to be queued for the iframe doc.
content.document.getElementById("iframe").width = "600";
// This will recreate the ol a11y subtree, including the iframe. The
// iframe document will be unbound briefly while this happens. We want to
// be sure processing the bounds cache update queued above doesn't assert
// while the document is unbound. The setTimeout is necessary to get the
// cache update to happen at the right time.
content.setTimeout(
() => (content.document.getElementById("ol").type = "i"),
0
);
});
await reordered;
const iframe = findAccessibleChildByID(docAcc, "iframe");
// We don't currently fire an event when a DocAccessible is re-bound to a new OuterDoc.
await BrowserTestUtils.waitForCondition(() => iframe.firstChild);
iframeDoc = iframe.firstChild;
ok(iframeDoc, "Got the iframe document after re-creation");
const newX = {};
const newY = {};
iframeDoc.getBounds(newX, newY, {}, {});
ok(
origX.value == newX.value && origY.value == newY.value,
"Iframe document x and y are same after iframe re-creation"
);
}
);