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/**
* Any copyright is dedicated to the Public Domain.
*/
const fakeEventType = "foo";
function testEventTarget(event) {
if (event.target !== self) {
throw new Error("Event has a bad target!");
}
if (event.currentTarget) {
throw new Error("Event has a bad currentTarget!");
}
postMessage(event.data);
}
addEventListener(
fakeEventType,
function (event) {
throw new Error("Trusted event listener received untrusted event!");
},
false,
false
);
addEventListener(
fakeEventType,
function (event) {
if (event.target !== self || event.currentTarget !== self) {
throw new Error("Fake event has bad target!");
}
if (event.isTrusted) {
throw new Error("Event should be untrusted!");
}
event.stopImmediatePropagation();
postMessage(event.data);
},
false,
true
);
addEventListener(
fakeEventType,
function (event) {
throw new Error(
"This shouldn't get called because of stopImmediatePropagation."
);
},
false,
true
);
var count = 0;
onmessage = function (event) {
if (event.target !== self || event.currentTarget !== self) {
throw new Error("Event has bad target!");
}
if (!count++) {
var exception;
try {
self.dispatchEvent(event);
} catch (e) {
exception = e;
}
if (!exception) {
throw new Error("Recursive dispatch didn't fail!");
}
event = new MessageEvent(fakeEventType, {
bubbles: event.bubbles,
cancelable: event.cancelable,
data: event.data,
origin: "*",
source: null,
});
self.dispatchEvent(event);
return;
}
setTimeout(testEventTarget, 0, event);
};