First commit

node_modules/ldapjs/test/corked_emitter.test.js

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+'use strict'
+
+const { test } = require('tap')
+const CorkedEmitter = require('../lib/corked_emitter')
+
+function gatherEventSequence (expectedNumber) {
+  const gatheredEvents = []
+  let callback
+  const finished = new Promise(function (resolve) {
+    callback = function (...args) {
+      gatheredEvents.push(...args)
+      if (gatheredEvents.length >= expectedNumber) {
+        // Prevent result mutation after our promise is resolved:
+        resolve(gatheredEvents.slice())
+      }
+    }
+  })
+  return {
+    finished,
+    callback
+  }
+}
+
+test('normal emit flow', function (t) {
+  const emitter = new CorkedEmitter()
+  const expectedSequence = [
+    ['searchEntry', { data: 'a' }],
+    ['searchEntry', { data: 'b' }],
+    ['end']
+  ]
+  const gatherer = gatherEventSequence(3)
+  emitter.on('searchEntry', function (...args) {
+    gatherer.callback(['searchEntry', ...args])
+  })
+  emitter.on('end', function (...args) {
+    gatherer.callback(['end', ...args])
+  })
+  emitter.emit('searchEntry', { data: 'a' })
+  emitter.emit('searchEntry', { data: 'b' })
+  emitter.emit('end')
+  gatherer.finished.then(function (gatheredEvents) {
+    expectedSequence.forEach(function (expectedEvent, i) {
+      t.equal(JSON.stringify(expectedEvent), JSON.stringify(gatheredEvents[i]))
+    })
+    t.end()
+  })
+})
+
+test('reversed listener registration', function (t) {
+  const emitter = new CorkedEmitter()
+  const expectedSequence = [
+    ['searchEntry', { data: 'a' }],
+    ['searchEntry', { data: 'b' }],
+    ['end']
+  ]
+  const gatherer = gatherEventSequence(3)
+  // This time, we swap the event listener registrations.
+  // The order of emits should remain unchanged.
+  emitter.on('end', function (...args) {
+    gatherer.callback(['end', ...args])
+  })
+  emitter.on('searchEntry', function (...args) {
+    gatherer.callback(['searchEntry', ...args])
+  })
+  emitter.emit('searchEntry', { data: 'a' })
+  emitter.emit('searchEntry', { data: 'b' })
+  emitter.emit('end')
+  gatherer.finished.then(function (gatheredEvents) {
+    expectedSequence.forEach(function (expectedEvent, i) {
+      t.equal(JSON.stringify(expectedEvent), JSON.stringify(gatheredEvents[i]))
+    })
+    t.end()
+  })
+})
+
+test('delayed listener registration', function (t) {
+  const emitter = new CorkedEmitter()
+  const expectedSequence = [
+    ['searchEntry', { data: 'a' }],
+    ['searchEntry', { data: 'b' }],
+    ['end']
+  ]
+  const gatherer = gatherEventSequence(3)
+  emitter.emit('searchEntry', { data: 'a' })
+  emitter.emit('searchEntry', { data: 'b' })
+  emitter.emit('end')
+  // The listeners only appear after a brief delay - this simulates
+  //  the situation described in https://github.com/ldapjs/node-ldapjs/issues/602
+  //  and in https://github.com/ifroz/node-ldapjs/commit/5239f6c68827f2c25b4589089c199d15bb882412
+  setTimeout(function () {
+    emitter.on('end', function (...args) {
+      gatherer.callback(['end', ...args])
+    })
+    emitter.on('searchEntry', function (...args) {
+      gatherer.callback(['searchEntry', ...args])
+    })
+  }, 50)
+  gatherer.finished.then(function (gatheredEvents) {
+    expectedSequence.forEach(function (expectedEvent, i) {
+      t.equal(JSON.stringify(expectedEvent), JSON.stringify(gatheredEvents[i]))
+    })
+    t.end()
+  })
+})