LayoutTests/inspector/debugger/pause-at-next-statement-reload.html

<!DOCTYPE html>
<html>
<head>
<script>
window.firstStatementOfThePage = true;
</script>
<script src="../../http/tests/inspector/resources/inspector-test.js"></script>
<script>
function test()
{
    let suite = InspectorTest.createAsyncSuite("Debugger.PauseAtNextStatementAcrossReload");

    suite.addTestCase({
        name: "Debugger.PauseAtNextStatementAcrossReload.Reload",
        description: "A pause requested for the next statement before a reload should stop at the first statement of the new document, as a pause requested by the user.",
        async test() {
            let target = InspectorTest.mainFrameTarget;
            let events = [];
            WI.debuggerManager.addEventListener(WI.DebuggerManager.Event.ScriptsCleared, () => { events.push("ScriptsCleared"); });
            let pausedPromise = WI.debuggerManager.awaitEvent(WI.DebuggerManager.Event.Paused).then(() => { events.push("Paused"); });
            let loadedPromise = InspectorTest.awaitEvent(FrontendTestHarness.Event.TestPageDidLoad);

            // Nothing may run in the page between requesting the pause and reloading it, or that code takes the pause.
            await target.DebuggerAgent.pause();
            InspectorTest.reloadPage();
            await pausedPromise;

            let callFrame = WI.debuggerManager.activeCallFrame;
            InspectorTest.expectThat(events.length >= 2 && events.at(-1) === "Paused" && events.slice(0, -1).every((event) => event === "ScriptsCleared"), "The debugger should pause after the global object was cleared.");
            InspectorTest.expectEqual(WI.debuggerManager.dataForTarget(callFrame.target).pauseReason, WI.DebuggerManager.PauseReason.PauseOnNextStatement, "The pause should be reported as a pause on the next statement.");

            let {result} = await callFrame.target.DebuggerAgent.evaluateOnCallFrame.invoke({
                callFrameId: callFrame.id,
                expression: "typeof window.firstStatementOfThePage",
                objectGroup: "test",
                doNotPauseOnExceptionsAndMuteConsole: true,
                returnByValue: true,
            });
            InspectorTest.expectEqual(result.value, "undefined", "The debugger should stop before the scripts of the new document run.");

            await WI.debuggerManager.resume();
            await loadedPromise;
            InspectorTest.pass("The page should finish loading after resuming.");
        }
    });

    suite.runTestCasesAndFinish();
}
</script>
</head>
<body onload="runTest()">
<p>Tests that a pause requested for the next statement before a reload stops at the first statement of the new document and is reported as the pause that was requested.</p>
</body>
</html>