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'use strict'; const common = require('../common'); const assert = require('assert'); const cp = require('child_process'); const fs = require('fs'); const path = require('path'); const CODE = 'setTimeout(() => { for (let i = 0; i < 100000; i++) { "test" + i } }, 1)'; const tmpdir = require('../common/tmpdir'); tmpdir.refresh(); const FILE_NAME = path.join(tmpdir.path, 'node_trace.1.log'); const proc = cp.spawn(process.execPath, [ '--trace-events-enabled', '-e', CODE ], { cwd: tmpdir.path }); proc.once('exit', common.mustCall(() => { assert(fs.existsSync(FILE_NAME)); fs.readFile(FILE_NAME, common.mustCall((err, data) => { const traces = JSON.parse(data.toString()).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.startsWith('V8.')) return false; return true; })); // 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; })); // 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; })); })); }));