1// Flags: --no-warnings 2 3'use strict'; 4const common = require('../common'); 5const assert = require('assert'); 6const cp = require('child_process'); 7const path = require('path'); 8const fs = require('fs'); 9const tmpdir = require('../common/tmpdir'); 10 11// This tests the emission of node.environment trace events 12 13const names = new Set([ 14 'Environment', 15 'RunAndClearNativeImmediates', 16 'CheckImmediate', 17 'RunTimers', 18 'BeforeExit', 19 'RunCleanup', 20 'AtExit' 21]); 22 23if (process.argv[2] === 'child') { 24 // This is just so that the child has something to do. 25 1 + 1; 26 // These ensure that the RunTimers, CheckImmediate, and 27 // RunAndClearNativeImmediates appear in the list. 28 setImmediate(() => { 1 + 1; }); 29 setTimeout(() => { 1 + 1; }, 1); 30} else { 31 tmpdir.refresh(); 32 33 const proc = cp.fork(__filename, 34 [ 'child' ], { 35 cwd: tmpdir.path, 36 execArgv: [ 37 '--trace-event-categories', 38 'node.environment' 39 ] 40 }); 41 42 proc.once('exit', common.mustCall(async () => { 43 const file = path.join(tmpdir.path, 'node_trace.1.log'); 44 const checkSet = new Set(); 45 46 assert(fs.existsSync(file)); 47 const data = await fs.promises.readFile(file); 48 JSON.parse(data.toString()).traceEvents 49 .filter((trace) => trace.cat !== '__metadata') 50 .forEach((trace) => { 51 assert.strictEqual(trace.pid, proc.pid); 52 assert(names.has(trace.name)); 53 checkSet.add(trace.name); 54 }); 55 56 assert.deepStrictEqual(names, checkSet); 57 })); 58} 59