Extract timeoutPromise into async-spec-helpers

Signed-off-by: Nathan Sobo <nathan@github.com>

spec/async-spec-helpers.js

@@ -48,6 +48,12 @@ export function conditionPromise (condition)  {
   })
 }
 
+export function timeoutPromise (timeout) {
+  return new Promise(function (resolve) {
+    global.setTimeout(resolve, timeout)
+  })
+}
+
 function waitsForPromise (fn) {
   const promise = fn()
   // This timeout is 3 minutes. We need to bump it back down once we fix

spec/main-process/atom-application.test.js

@@ -7,6 +7,7 @@ import fs from 'fs-plus'
 import path from 'path'
 import AtomApplication from '../../src/main-process/atom-application'
 import parseCommandLine from '../../src/main-process/parse-command-line'
+import {timeoutPromise} from '../async-spec-helpers'
 
 const ATOM_RESOURCE_PATH = path.resolve(__dirname, '..', '..')
 
@@ -271,7 +272,7 @@ describe('AtomApplication', function () {
       await window1.loadedPromise
 
      // wait a bit just to make sure we don't pass due to querying the render process before it loads
-      await getTimeoutPromise(1000)
+      await timeoutPromise(1000)
 
       const itemCount = await evalInWebContents(window1.browserWindow.webContents, function (sendBackToMainProcess) {
         sendBackToMainProcess(atom.workspace.getActivePane().getItems().length)
@@ -399,12 +400,6 @@ describe('AtomApplication', function () {
     })
   }
 
-  function getTimeoutPromise (timeout) {
-    return new Promise(function (resolve) {
-      global.setTimeout(resolve, timeout)
-    })
-  }
-
   function clearElectronSession () {
     return new Promise(function (resolve) {
       electron.session.defaultSession.clearStorageData(function () {

spec/text-editor-component-spec.js

@@ -5085,12 +5085,6 @@ describe('TextEditorComponent', function () {
     }
   }
 
-  function timeoutPromise (timeout) {
-    return new Promise(function (resolve) {
-      window.setTimeout(resolve, timeout)
-    })
-  }
-
   function nextAnimationFramePromise () {
     return new Promise(function (resolve) {
       window.requestAnimationFrame(resolve)