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test: add test for dynamically enabling node.async_hooks tracing
PR-URL: #26062 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: James M Snell <[email protected]>
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'use strict'; | ||
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const common = require('../common'); | ||
if (!process.binding('config').hasTracing) | ||
common.skip('missing trace events'); | ||
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const assert = require('assert'); | ||
const cp = require('child_process'); | ||
const fs = require('fs'); | ||
const path = require('path'); | ||
const util = require('util'); | ||
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const enable = `require("trace_events").createTracing( | ||
{ categories: ["node.async_hooks"] }).enable();`; | ||
const code = | ||
'setTimeout(() => { for (var i = 0; i < 100000; i++) { "test" + i } }, 1)'; | ||
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const tmpdir = require('../common/tmpdir'); | ||
const filename = path.join(tmpdir.path, 'node_trace.1.log'); | ||
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tmpdir.refresh(); | ||
const proc = cp.spawnSync( | ||
process.execPath, | ||
['-e', enable + code ], | ||
{ | ||
cwd: tmpdir.path, | ||
env: Object.assign({}, process.env, { | ||
'NODE_DEBUG_NATIVE': 'tracing', | ||
'NODE_DEBUG': 'tracing' | ||
}) | ||
}); | ||
console.log(proc.signal); | ||
console.log(proc.stderr.toString()); | ||
assert.strictEqual(proc.status, 0); | ||
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assert(fs.existsSync(filename)); | ||
const data = fs.readFileSync(filename, 'utf-8'); | ||
const traces = JSON.parse(data).traceEvents; | ||
assert(traces.length > 0); | ||
// V8 trace events should be generated. | ||
assert(!traces.some((trace) => { | ||
if (trace.pid !== proc.pid) | ||
return false; | ||
if (trace.cat !== 'v8') | ||
return false; | ||
if (trace.name !== 'V8.ScriptCompiler') | ||
return false; | ||
return true; | ||
})); | ||
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// C++ async_hooks trace events should be generated. | ||
assert(traces.some((trace) => { | ||
if (trace.pid !== proc.pid) | ||
return false; | ||
if (trace.cat !== 'node,node.async_hooks') | ||
return false; | ||
return true; | ||
})); | ||
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// JavaScript async_hooks trace events should be generated. | ||
assert(traces.some((trace) => { | ||
if (trace.pid !== proc.pid) | ||
return false; | ||
if (trace.cat !== 'node,node.async_hooks') | ||
return false; | ||
if (trace.name !== 'Timeout') | ||
return false; | ||
return true; | ||
})); | ||
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// Check args in init events | ||
const initEvents = traces.filter((trace) => { | ||
return (trace.ph === 'b' && !trace.name.includes('_CALLBACK')); | ||
}); | ||
for (const trace of initEvents) { | ||
console.log(trace); | ||
if (trace.args.data.executionAsyncId > 0 && | ||
trace.args.data.triggerAsyncId > 0) { | ||
continue; | ||
} | ||
assert.fail('Unexpected initEvent: ', | ||
util.inspect(trace, { depth: Infinity })); | ||
} |