Skip autoupdater tests on Win32, we don't use electron autoUpdate there

spec/atom-environment-spec.coffee

@@ -401,6 +401,8 @@ describe "AtomEnvironment", ->
       subscription?.dispose()
 
     it "invokes onUpdateAvailable listeners", ->
+      return unless process.platform is 'darwin' # Test tied to electron autoUpdater, we use something else on Linux and Win32
+
       atom.listenForUpdates()
 
       updateAvailableHandler = jasmine.createSpy("update-available-handler")

spec/auto-update-manager-spec.js

@@ -5,6 +5,9 @@ import {remote} from 'electron'
 const electronAutoUpdater = remote.require('electron').autoUpdater
 
 describe('AutoUpdateManager (renderer)', () => {
+
+  if (process.platform !== 'darwin') return // Tests are tied to electron autoUpdater, we use something else on Linux and Win32
+
   let autoUpdateManager
 
   beforeEach(() => {