add hw2

node_modules/pino/test/stdout-protection.test.js

@@ -0,0 +1,39 @@
+'use strict'
+
+const { test } = require('tap')
+const { join } = require('path')
+const { fork } = require('child_process')
+const { once } = require('./helper')
+const writer = require('flush-write-stream')
+const pino = require('..')
+
+test('do not use SonicBoom is someone tampered with process.stdout.write', async ({ not }) => {
+  let actual = ''
+  const child = fork(join(__dirname, 'fixtures', 'stdout-hack-protection.js'), { silent: true })
+
+  child.stdout.pipe(writer((s, enc, cb) => {
+    actual += s
+    cb()
+  }))
+  await once(child, 'close')
+  not(actual.match(/^hack/), null)
+})
+
+test('do not use SonicBoom is someone has passed process.stdout to pino', async ({ equal }) => {
+  const logger = pino(process.stdout)
+  equal(logger[pino.symbols.streamSym], process.stdout)
+})
+
+test('do not crash if process.stdout has no fd', async ({ teardown }) => {
+  const fd = process.stdout.fd
+  delete process.stdout.fd
+  teardown(function () { process.stdout.fd = fd })
+  pino()
+})
+
+test('use fd=1 if process.stdout has no fd in pino.destination() (worker case)', async ({ teardown }) => {
+  const fd = process.stdout.fd
+  delete process.stdout.fd
+  teardown(function () { process.stdout.fd = fd })
+  pino.destination()
+})