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`NodeRuntime.waitingForDebugger` is a new Inspector Protocol event that
will fire when the process being inspected is waiting for the debugger
(for example, when `inspector.waitForDebugger()` is called). This allows
inspecting processes to know when the inspected process is waiting for a
`Runtime.runIfWaitingForDebugger` message to resume execution. It allows
tooling to resume execution of the inspected process as soon as it deems
necessary, without having to guess if the inspected process is waiting
or not, making the workflow more deterministic. With a more
deterministic workflow, it is possible to update Node.js core tests to
avoid race conditions that can cause flakiness. Therefore, tests were
also changed as following:
* Remove no-op Runtime.runIfWaitingForDebugger from tests that don't
need it
* Use NodeRuntime.waitingForDebugger in all tests that need
Runtime.runIfWaitingForDebugger, to ensure order of operations is
predictable and correct
* Simplify test-inspector-multisession-ws
There might be value in adding `NodeWorker.waitingForDebugger` in a
future patch, but as of right now, no Node.js core inspector tests using
worker threads are not failing due to race conditions.
Fixes: https://github.com/nodejs/node/issues/34730
PR-URL: https://github.com/nodejs/node/pull/51560
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
69 lines
2.3 KiB
JavaScript
69 lines
2.3 KiB
JavaScript
'use strict';
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const common = require('../common');
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common.skipIfInspectorDisabled();
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common.skipIf32Bits();
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const { NodeInstance } = require('../common/inspector-helper.js');
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const assert = require('assert');
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// Even with --inspect, the default async call stack depth is 0. We need a
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// chance to call Debugger.setAsyncCallStackDepth *before* activating the timer
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// for async stack traces to work.
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const script = `
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process._rawDebug('Waiting until the inspector is activated...');
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const waiting = setInterval(() => { debugger; }, 50);
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// This function is called by the inspector client (session)
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function setupTimeoutWithBreak() {
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clearInterval(waiting);
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process._rawDebug('Debugger ready, setting up timeout with a break');
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setTimeout(() => { debugger; }, 50);
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}
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`;
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async function waitForInitialSetup(session) {
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console.error('[test]', 'Waiting for initial setup');
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await session.waitForBreakOnLine(2, '[eval]');
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}
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async function setupTimeoutForStackTrace(session) {
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console.error('[test]', 'Setting up timeout for async stack trace');
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await session.send([
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{ 'method': 'Runtime.evaluate',
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'params': { expression: 'setupTimeoutWithBreak()' } },
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{ 'method': 'Debugger.resume' },
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]);
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}
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async function checkAsyncStackTrace(session) {
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console.error('[test]', 'Verify basic properties of asyncStackTrace');
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const paused = await session.waitForBreakOnLine(8, '[eval]');
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assert(paused.params.asyncStackTrace,
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`${Object.keys(paused.params)} contains "asyncStackTrace" property`);
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assert(paused.params.asyncStackTrace.description, 'Timeout');
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assert(paused.params.asyncStackTrace.callFrames
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.some((frame) => frame.functionName === 'setupTimeoutWithBreak'));
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}
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async function runTests() {
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const instance = new NodeInstance(['--inspect=0'], script);
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const session = await instance.connectInspectorSession();
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await session.send([
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{ 'method': 'Runtime.enable' },
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{ 'method': 'Debugger.enable' },
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{ 'method': 'Debugger.setAsyncCallStackDepth',
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'params': { 'maxDepth': 10 } },
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{ 'method': 'Debugger.setBlackboxPatterns',
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'params': { 'patterns': [] } },
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]);
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await waitForInitialSetup(session);
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await setupTimeoutForStackTrace(session);
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await checkAsyncStackTrace(session);
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console.error('[test]', 'Stopping child instance');
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session.disconnect();
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instance.kill();
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}
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runTests();
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