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// Code used by controlling frame of the unload policy tests.
const MAIN_FRAME = 'main';
const SUBFRAME = 'sub';
async function isUnloadAllowed(remoteContextWrapper) {
return remoteContextWrapper.executeScript(() => {
return document.featurePolicy.allowsFeature('unload');
});
}
// Checks whether a frame runs unload handlers.
// This checks the policy directly and also installs an unload handler and
// navigates the frame checking that the handler ran.
async function assertWindowRunsUnload(
remoteContextWrapper, name, {shouldRunUnload}) {
const maybeNot = shouldRunUnload ? '' : 'not ';
assert_equals(
await isUnloadAllowed(remoteContextWrapper), shouldRunUnload,
`${name}: unload in ${name} should ${maybeNot}be allowed`);
// Set up recording of whether unload handler ran.
await remoteContextWrapper.executeScript((name) => {
localStorage.setItem(name, 'did not run');
addEventListener('unload', () => localStorage.setItem(name, 'did run'));
}, [name]);
// Navigate away and then back.
const second = await remoteContextWrapper.navigateToNew();
// Navigating back ensures that the unload has completed.
// Also if the navigation is cross-site then we have to return
// to the original origin in order to read the recorded unload.
second.historyBack();
// Check that unload handlers ran as expected.
const recordedUnload = await remoteContextWrapper.executeScript(
(name) => localStorage.getItem(name), [name]);
assert_equals(
recordedUnload, `did ${maybeNot}run`,
`${name}: unload should ${maybeNot}have run`);
}
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