mozilla-central/js/xpconnect/tests/chrome/test_scripterror.html

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Test Info: Warnings

<!DOCTYPE html>
<meta charset=utf-8>
<title>Tests for nsIScriptError</title>
<div id="log"></div>
<script>
function awaitScriptError(fun) {
// Use setTimeout in order to prevent throwing from test frame
// and to have a clean stack frame.
setTimeout(fun, 0)
return new Promise(resolve => {
const observer = {
QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
observe(message) {
if (!(message instanceof Ci.nsIScriptError)) {
return;
}
Services.console.unregisterListener(observer);
resolve(message);
}
};
Services.console.registerListener(observer);
});
}
function hasExpectedProperties(message, exception) {
is(message.hasException, true, "has exception");
is(message.exception, exception, "has correct exception");
ok(message.stack != null, "has stack");
is(message.stack?.source, location.href, "correct stack source")
is(message.sourceName, location.href, "has correct sourceName/filename");
ok(message.lineNumber > 0, "has lineNumber");
is(message.innerWindowID, window.windowGlobalChild.innerWindowId,
"correct innerWindowID");
}
add_task(async () => {
await SpecialPowers.pushPrefEnv({"set": [
["javascript.options.asyncstack_capture_debuggee_only", false],
]});
const TESTS = [
"abc",
new Error("foobar"),
{foo: "bar"}
];
for (let test of TESTS) {
// First test as regular throw
SimpleTest.expectUncaughtException();
let message = await awaitScriptError(function testName() {
throw test;
});
hasExpectedProperties(message, test);
is(message.isPromiseRejection, false, "not a rejected promise");
// Now test as uncaught promise rejection
message = await awaitScriptError(function testName() {
Promise.reject(test);
});
hasExpectedProperties(message, test);
is(message.isPromiseRejection, true, "is a rejected promise");
// Uncaught rejection from async function
message = await awaitScriptError(async function testName() {
throw test;
});
hasExpectedProperties(message, test);
is(message.isPromiseRejection, true, "is a rejected promise");
// Uncaught rejection from then callback
message = await awaitScriptError(async function testName() {
Promise.resolve().then(() => {
throw test;
});
});
hasExpectedProperties(message, test);
is(message.isPromiseRejection, true, "is a rejected promise");
}
});
</script>