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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
add_task(async function () {
Assert.ok("console" in this);
// Add a first listener that synchronously throws.
const removeListener1 = addConsoleListener(() => {
throw new Error("Fail");
});
// Add a second listener updating a flag we can observe from the test.
let secondListenerCalled = false;
const removeListener2 = addConsoleListener(
() => (secondListenerCalled = true)
);
console.log(42);
Assert.ok(secondListenerCalled, "Second listener was called");
// Cleanup listeners.
removeListener1();
removeListener2();
});
function addConsoleListener(callback) {
const principal = Cc["@mozilla.org/systemprincipal;1"].createInstance(
Ci.nsIPrincipal
);
ConsoleAPIStorage.addLogEventListener(callback, principal);
return () => {
ConsoleAPIStorage.removeLogEventListener(callback, principal);
};
}
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