Don’t load/save config if enablePersistence option is false

spec/config-spec.coffee

@@ -11,8 +11,12 @@ describe "Config", ->
     spyOn(atom.config, "save")
     dotAtomPath = temp.path('dot-atom-dir')
     atom.config.configDirPath = dotAtomPath
+    atom.config.enablePersistence = true
     atom.config.configFilePath = path.join(atom.config.configDirPath, "atom.config.cson")
 
+  afterEach ->
+    atom.config.enablePersistence = false
+
   describe ".get(keyPath, {scope, sources, excludeSources})", ->
     it "allows a key path's value to be read", ->
       expect(atom.config.set("foo.bar.baz", 42)).toBe true

spec/jasmine-test-runner.coffee

@@ -18,7 +18,11 @@ module.exports = ({logFile, headless, testPaths, buildAtomEnvironment}) ->
   applicationDelegate = new ApplicationDelegate()
   applicationDelegate.setRepresentedFilename = ->
   applicationDelegate.setWindowDocumentEdited = ->
-  window.atom = buildAtomEnvironment({applicationDelegate, window, document})
+  window.atom = buildAtomEnvironment({
+    applicationDelegate, window, document,
+    configDirPath: process.env.ATOM_HOME
+    enablePersistence: false
+  })
 
   require './spec-helper'
   disableFocusMethods() if process.env.JANKY_SHA1 or process.env.CI

src/atom-environment.coffee

@@ -116,7 +116,7 @@ class AtomEnvironment extends Model
 
   # Call .loadOrCreate instead
   constructor: (params={}) ->
-    {@applicationDelegate, @window, @document, configDirPath} = params
+    {@applicationDelegate, @window, @document, configDirPath, @enablePersistence} = params
 
     @state = {version: @constructor.version}
 
@@ -133,7 +133,7 @@ class AtomEnvironment extends Model
 
     @notifications = new NotificationManager
 
-    @config = new Config({configDirPath, resourcePath, notificationManager: @notifications})
+    @config = new Config({configDirPath, resourcePath, notificationManager: @notifications, @enablePersistence})
     @setConfigSchema()
 
     @keymaps = new KeymapManager({configDirPath, resourcePath, notificationManager: @notifications})

src/config.coffee

@@ -334,8 +334,8 @@ class Config
     value
 
   # Created during initialization, available as `atom.config`
-  constructor: ({@configDirPath, @resourcePath, @notificationManager}={}) ->
-    if @configDirPath?
+  constructor: ({@configDirPath, @resourcePath, @notificationManager, @enablePersistence}={}) ->
+    if @enablePersistence?
       @configFilePath = fs.resolve(@configDirPath, 'config', ['json', 'cson'])
       @configFilePath ?= path.join(@configDirPath, 'config.cson')
     @clear()
@@ -360,7 +360,7 @@ class Config
       @save()
     debouncedSave = _.debounce(save, 100)
 
-  shouldNotAccessFileSystem: -> not @configDirPath?
+  shouldNotAccessFileSystem: -> not @enablePersistence
 
   ###
   Section: Config Subscription

src/initialize-application-window.coffee

@@ -16,7 +16,12 @@ process.env.NODE_ENV ?= 'production' unless devMode
 
 AtomEnvironment = require './atom-environment'
 ApplicationDelegate = require './application-delegate'
-window.atom = new AtomEnvironment({applicationDelegate: new ApplicationDelegate, window, document, configDirPath: process.env.ATOM_HOME})
+window.atom = new AtomEnvironment({
+  window, document,
+  applicationDelegate: new ApplicationDelegate,
+  configDirPath: process.env.ATOM_HOME
+  enablePersistence: true
+})
 
 atom.displayWindow()
 atom.loadStateSync()