Fix Saving Configuration Bug

tests/lib/themeManager.test.js

@@ -0,0 +1,103 @@
+/**
+ * @fileoverview Unit test for browser/main/lib/ThemeManager.js
+ */
+const { chooseTheme, applyTheme } = require('browser/main/lib/ThemeManager')
+jest.mock('../../browser/main/lib/ConfigManager', () => {
+  return {
+    set: () => {}
+  }
+})
+
+const originalDate = Date
+let context = {}
+
+beforeAll(() => {
+  const constantDate = new Date('2017-11-27T14:33:42Z')
+  global.Date = class extends Date {
+    constructor() {
+      super()
+      return constantDate
+    }
+  }
+})
+
+beforeEach(() => {
+  context = {
+    ui: {
+      theme: 'white',
+      scheduledTheme: 'dark',
+      enableScheduleTheme: true,
+      defaultTheme: 'monokai'
+    }
+  }
+})
+
+afterAll(() => {
+  global.Date = originalDate
+})
+
+test("enableScheduleTheme is false, theme shouldn't change", () => {
+  context.ui.enableScheduleTheme = false
+
+  const beforeTheme = context.ui.theme
+  chooseTheme(context)
+  const afterTheme = context.ui.theme
+
+  expect(afterTheme).toBe(beforeTheme)
+})
+
+// NOT IN SCHEDULE
+test("scheduleEnd is bigger than scheduleStart and not in schedule, theme shouldn't change", () => {
+  const beforeTheme = context.ui.defaultTheme
+  context.ui.scheduleStart = 720 // 12:00
+  context.ui.scheduleEnd = 870 // 14:30
+  chooseTheme(context)
+  const afterTheme = context.ui.theme
+
+  expect(afterTheme).toBe(beforeTheme)
+})
+
+test("scheduleStart is bigger than scheduleEnd and not in schedule, theme shouldn't change", () => {
+  const beforeTheme = context.ui.defaultTheme
+  context.ui.scheduleStart = 960 // 16:00
+  context.ui.scheduleEnd = 600 // 10:00
+  chooseTheme(context)
+  const afterTheme = context.ui.theme
+
+  expect(afterTheme).toBe(beforeTheme)
+})
+
+// IN SCHEDULE
+test('scheduleEnd is bigger than scheduleStart and in schedule, theme should change', () => {
+  const beforeTheme = context.ui.scheduledTheme
+  context.ui.scheduleStart = 720 // 12:00
+  context.ui.scheduleEnd = 900 // 15:00
+  chooseTheme(context)
+  const afterTheme = context.ui.theme
+
+  expect(afterTheme).toBe(beforeTheme)
+})
+
+test('scheduleStart is bigger than scheduleEnd and in schedule, theme should change', () => {
+  const beforeTheme = context.ui.scheduledTheme
+  context.ui.scheduleStart = 1200 // 20:00
+  context.ui.scheduleEnd = 900 // 15:00
+  chooseTheme(context)
+  const afterTheme = context.ui.theme
+
+  expect(afterTheme).toBe(beforeTheme)
+})
+
+test("theme to apply is not a supported theme, theme shouldn't change", () => {
+  applyTheme('notATheme')
+  const afterTheme = document.body.dataset.theme
+
+  expect(afterTheme).toBe('default')
+})
+
+test('theme to apply is a supported theme, theme should change', () => {
+  applyTheme(context.ui.defaultTheme)
+  const afterTheme = document.body.dataset.theme
+
+  expect(afterTheme).toBe(context.ui.defaultTheme)
+})