storage-persisted.js
if (this.document === undefined) {
importScripts("/resources/testharness.js");
}
test(function(t) {
assert_true('persisted' in navigator.storage);
assert_equals(typeof navigator.storage.persisted, 'function');
assert_true(navigator.storage.persisted() instanceof Promise);
}, 'persisted() method exists and returns a Promise');
promise_test(function(t) {
return navigator.storage.persisted().then(function(result) {
assert_equals(typeof result, 'boolean');
assert_equals(result, false);
});
}, 'persisted() returns a promise and resolves as boolean with false');
done();