LayoutTests/inspector/debugger/truncate-async-stack-trace.html

<!doctype html>
<html>
<head>
<script src="../../http/tests/inspector/resources/inspector-test.js"></script>
<script>
function testBranchingTruncate(repeatCount) {
    let count = 0;
    function repeat() {
        if (count++ === repeatCount) {
            debugger;
            TestPage.dispatchEventToFrontend("AfterTestFunction");
            return;
        }

        setInterval(() => {}, 1000);
        setTimeout(repeat, 0);
    }
    setTimeout(repeat, 0);
}

function test()
{
    let suite = InspectorTest.createAsyncSuite("AsyncStackTrace.truncate");

    suite.addTestCase({
        name: "TruncateBranchingStackTrace",
        description: "Check that branching stack traces can be truncated.",
        test(resolve, reject) {
            WI.debuggerManager.awaitEvent(WI.DebuggerManager.Event.Paused)
            .then((event) => {
                InspectorTest.pass("Paused in branching stack trace.");
                WI.debuggerManager.resume();
            });

            InspectorTest.awaitEvent("AfterTestFunction").then(resolve, reject);

            let repeatCount = WI.debuggerManager.asyncStackTraceDepth;
            InspectorTest.evaluateInPage(`testBranchingTruncate(${repeatCount})`);
        }
    });

    suite.runTestCasesAndFinish();
}
</script>
</head>
<body onload="runTest()">
<p>Tests for truncated async stack traces.</p>
</body>
</html>