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// Flags: --expose-internals
'use strict';
const common = require('../common');
common.skipIfInspectorDisabled();
common.skipIf32Bits();
const { NodeInstance } = require('../common/inspector-helper.js');
const assert = require('assert');
common.skipIfWorker(); // Signal starts a server for a main thread inspector
const script = `
process._rawDebug('Waiting until a signal enables the inspector...');
let waiting = setInterval(waitUntilDebugged, 50);
function waitUntilDebugged() {
const { internalBinding } = require('internal/test/binding');
if (!internalBinding('inspector').isEnabled()) return;
clearInterval(waiting);
// At this point, even though the Inspector is enabled, the default async
// call stack depth is 0. We need a chance to call
// Debugger.setAsyncCallStackDepth *before* activating the actual timer for
// async stack traces to work. Directly using a debugger statement would be
// too brittle, and using a longer timeout would unnecessarily slow down the
// test on most machines. Triggering a debugger break through an interval is
// a faster and more reliable way.
process._rawDebug('Signal received, waiting for debugger setup');
waiting = setInterval(() => { debugger; }, 50);
}
// This function is called by the inspector client (session)
function setupTimeoutWithBreak() {
clearInterval(waiting);
process._rawDebug('Debugger ready, setting up timeout with a break');
setTimeout(() => { debugger; }, 50);
}
`;
async function waitForInitialSetup(session) {
console.error('[test]', 'Waiting for initial setup');
await session.waitForBreakOnLine(16, '[eval]');
}
async function setupTimeoutForStackTrace(session) {
console.error('[test]', 'Setting up timeout for async stack trace');
await session.send([
{ 'method': 'Runtime.evaluate',
'params': { expression: 'setupTimeoutWithBreak()' } },
{ 'method': 'Debugger.resume' }
]);
}
async function checkAsyncStackTrace(session) {
console.error('[test]', 'Verify basic properties of asyncStackTrace');
const paused = await session.waitForBreakOnLine(23, '[eval]');
assert(paused.params.asyncStackTrace,
`${Object.keys(paused.params)} contains "asyncStackTrace" property`);
assert(paused.params.asyncStackTrace.description, 'Timeout');
assert(paused.params.asyncStackTrace.callFrames
.some((frame) => frame.functionName === 'setupTimeoutWithBreak'));
}
async function runTests() {
const instance = await NodeInstance.startViaSignal(script);
const session = await instance.connectInspectorSession();
await session.send([
{ 'method': 'Runtime.enable' },
{ 'method': 'Debugger.enable' },
{ 'method': 'Debugger.setAsyncCallStackDepth',
'params': { 'maxDepth': 10 } },
{ 'method': 'Debugger.setBlackboxPatterns',
'params': { 'patterns': [] } },
{ 'method': 'Runtime.runIfWaitingForDebugger' }
]);
await waitForInitialSetup(session);
await setupTimeoutForStackTrace(session);
await checkAsyncStackTrace(session);
console.error('[test]', 'Stopping child instance');
session.disconnect();
instance.kill();
}
runTests();
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