upgrade system pref spec

spec/api-system-preferences-spec.js

@@ -2,41 +2,37 @@ const assert = require('assert')
 const {remote} = require('electron')
 const {systemPreferences} = remote
 
-describe('systemPreferences module', function () {
-  describe('systemPreferences.getAccentColor', function () {
-    if (process.platform !== 'win32') {
-      return
-    }
+describe('systemPreferences module', () => {
+  describe('systemPreferences.getAccentColor', () => {
+    if (process.platform !== 'win32') return
 
-    it('should return a non-empty string', function () {
+    it('should return a non-empty string', () => {
       let accentColor = systemPreferences.getAccentColor()
       assert.notEqual(accentColor, null)
       assert(accentColor.length > 0)
     })
   })
 
-  describe('systemPreferences.getColor(id)', function () {
-    if (process.platform !== 'win32') {
-      return
-    }
+  describe('systemPreferences.getColor(id)', () => {
+    if (process.platform !== 'win32') return
 
-    it('throws an error when the id is invalid', function () {
-      assert.throws(function () {
+    it('throws an error when the id is invalid', () => {
+      assert.throws(() => {
         systemPreferences.getColor('not-a-color')
       }, /Unknown color: not-a-color/)
     })
 
-    it('returns a hex RGB color string', function () {
+    it('returns a hex RGB color string', () => {
       assert.equal(/^#[0-9A-F]{6}$/i.test(systemPreferences.getColor('window')), true)
     })
   })
 
-  describe('systemPreferences.getUserDefault(key, type)', function () {
+  describe('systemPreferences.getUserDefault(key, type)', () => {
     if (process.platform !== 'darwin') {
       return
     }
 
-    it('returns values for known user defaults', function () {
+    it('returns values for known user defaults', () => {
       const locale = systemPreferences.getUserDefault('AppleLocale', 'string')
       assert.equal(typeof locale, 'string')
       assert(locale.length > 0)
@@ -46,7 +42,7 @@ describe('systemPreferences module', function () {
       assert(languages.length > 0)
     })
 
-    it('returns values for unknown user defaults', function () {
+    it('returns values for unknown user defaults', () => {
       assert.equal(systemPreferences.getUserDefault('UserDefaultDoesNotExist', 'boolean'), false)
       assert.equal(systemPreferences.getUserDefault('UserDefaultDoesNotExist', 'integer'), 0)
       assert.equal(systemPreferences.getUserDefault('UserDefaultDoesNotExist', 'float'), 0)
@@ -60,12 +56,9 @@ describe('systemPreferences module', function () {
   })
 
   describe('systemPreferences.setUserDefault(key, type, value)', () => {
-    if (process.platform !== 'darwin') {
-      return
-    }
+    if (process.platform !== 'darwin') return
 
     const KEY = 'SystemPreferencesTest'
-
     const TEST_CASES = [
       ['string', 'abc'],
       ['boolean', true],
@@ -101,9 +94,7 @@ describe('systemPreferences module', function () {
   })
 
   describe('systemPreferences.setUserDefault(key, type, value)', () => {
-    if (process.platform !== 'darwin') {
-      return
-    }
+    if (process.platform !== 'darwin') return
 
     it('removes keys', () => {
       const KEY = 'SystemPreferencesTest'
@@ -117,8 +108,8 @@ describe('systemPreferences module', function () {
     })
   })
 
-  describe('systemPreferences.isInvertedColorScheme()', function () {
-    it('returns a boolean', function () {
+  describe('systemPreferences.isInvertedColorScheme()', () => {
+    it('returns a boolean', () => {
       assert.equal(typeof systemPreferences.isInvertedColorScheme(), 'boolean')
     })
   })