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add_task(async function test_windowlessBrowserTroubleshootCrash() {
let webNav = Services.appShell.createWindowlessBrowser(false);
let onLoaded = new Promise((resolve, reject) => {
let docShell = webNav.docShell;
let listener = {
observe(contentWindow, topic, data) {
let observedDocShell = contentWindow.docShell.sameTypeRootTreeItem.QueryInterface(
Ci.nsIDocShell
);
if (docShell === observedDocShell) {
Services.obs.removeObserver(
listener,
"content-document-global-created"
);
resolve();
}
},
};
Services.obs.addObserver(listener, "content-document-global-created");
});
let loadURIOptions = {
triggeringPrincipal: Services.scriptSecurityManager.createNullPrincipal({}),
};
webNav.loadURI("about:blank", loadURIOptions);
await onLoaded;
let winUtils = webNav.document.defaultView.windowUtils;
try {
is(
winUtils.layerManagerType,
"Basic",
"windowless browser's layerManagerType should be 'Basic'"
);
} catch (e) {
// The windowless browser may not have a layermanager at all yet, and that's ok.
// The troubleshooting code similarly skips over windows with no layer managers.
}
ok(true, "not crashed");
var Troubleshoot = ChromeUtils.import(
"resource://gre/modules/Troubleshoot.jsm",
{}
).Troubleshoot;
var data = await new Promise((resolve, reject) => {
Troubleshoot.snapshot(data => {
resolve(data);
});
});
ok(
data.graphics.windowLayerManagerType !== "None",
"windowless browser window should not set windowLayerManagerType to 'None'"
);
webNav.close();
});
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