diff --git a/spec/integration/store/TimelineSpace.spec.js b/spec/integration/store/TimelineSpace.spec.js
new file mode 100644
index 00000000..1180614d
--- /dev/null
+++ b/spec/integration/store/TimelineSpace.spec.js
@@ -0,0 +1,242 @@
+import Mastodon from 'megalodon'
+import { createLocalVue } from '@vue/test-utils'
+import Vuex from 'vuex'
+import { ipcMain } from '~/spec/mock/electron'
+import TimelineSpace from '~/src/renderer/store/TimelineSpace'
+import unreadSettings from '~/src/constants/unreadNotification'
+
+jest.genMockFromModule('megalodon')
+jest.mock('megalodon')
+
+const state = () => {
+  return {
+    account: {
+      domain: '',
+      _id: '',
+      username: ''
+    },
+    loading: false,
+    emojis: [],
+    tootMax: 500,
+    unreadNotification: {
+      direct: true,
+      local: true,
+      public: true
+    },
+    useWebsocket: false,
+    pleroma: false
+  }
+}
+
+const homeStore = {
+  namespaced: true,
+  actions: {
+    fetchTimeline: jest.fn()
+  }
+}
+
+const notificationStore = {
+  namespaced: true,
+  actions: {
+    fetchNotifications: jest.fn()
+  }
+}
+
+const DMStore = {
+  namespaced: true,
+  actions: {
+    fetchTimeline: jest.fn()
+  }
+}
+
+const LocalStore = {
+  namespaced: true,
+  actions: {
+    fetchLocalTimeline: jest.fn()
+  }
+}
+
+const PublicStore = {
+  namespaced: true,
+  actions: {
+    fetchPublicTimeline: jest.fn()
+  }
+}
+
+const contentsStore = {
+  namespaced: true,
+  modules: {
+    Home: homeStore,
+    Notifications: notificationStore,
+    DirectMessages: DMStore,
+    Local: LocalStore,
+    Public: PublicStore
+  }
+}
+
+const initStore = () => {
+  return {
+    namespaced: true,
+    modules: {
+      Contents: contentsStore
+    },
+    state: state(),
+    actions: TimelineSpace.actions,
+    mutations: TimelineSpace.mutations
+  }
+}
+
+describe('TimelineSpace', () => {
+  let store
+  let localVue
+
+  beforeEach(() => {
+    localVue = createLocalVue()
+    localVue.use(Vuex)
+    store = new Vuex.Store({
+      modules: {
+        TimelineSpace: initStore()
+      }
+    })
+  })
+
+  describe('localAccount', () => {
+    describe('account already exists', () => {
+      beforeEach(() => {
+        ipcMain.once('get-local-account', (event, _id) => {
+          event.sender.send('response-get-local-account', {
+            username: 'test'
+          })
+        })
+      })
+      it('should be updated', async () => {
+        await store.dispatch('TimelineSpace/localAccount', 1)
+        expect(store.state.TimelineSpace.account.username).toEqual('test')
+      })
+    })
+
+    describe('account does not exist', () => {
+      beforeEach(() => {
+        ipcMain.once('get-local-account', (event, _id) => {
+          event.sender.send('response-get-local-account', {})
+        })
+        ipcMain.once('update-account', (event, _account) => {
+          event.sender.send('response-update-account', {
+            username: 'fetched'
+          })
+        })
+      })
+      it('should be fetched', async () => {
+        await store.dispatch('TimelineSpace/localAccount', 1)
+        expect(store.state.TimelineSpace.account.username).toEqual('fetched')
+      })
+    })
+  })
+
+  describe('detectPleroma', () => {
+    describe('API is pleroma', () => {
+      it('should be detected', async () => {
+        const mockResponse = {
+          version: 'Pleroma v0.9.9'
+        }
+        Mastodon.get.mockResolvedValue(mockResponse)
+        await store.dispatch('TimelineSpace/detectPleroma')
+        expect(store.state.TimelineSpace.pleroma).toEqual(true)
+        expect(store.state.TimelineSpace.useWebsocket).toEqual(true)
+      })
+    })
+    describe('API is not pleroma', () => {
+      it('should be detected', async () => {
+        const mockResponse = {
+          version: '2.7.0'
+        }
+        Mastodon.get.mockResolvedValue(mockResponse)
+        await store.dispatch('TimelineSpace/detectPleroma')
+        expect(store.state.TimelineSpace.pleroma).toEqual(false)
+        expect(store.state.TimelineSpace.useWebsocket).toEqual(false)
+      })
+    })
+  })
+
+  describe('fetchEmojis', () => {
+    it('should be updated', async () => {
+      const mockResponse = [
+        {
+          shortcode: 'emacs',
+          url: 'http://example.com/emacs'
+        },
+        {
+          shortcode: 'ruby',
+          url: 'http://example.com/ruby'
+        }
+      ]
+      Mastodon.get.mockResolvedValue(mockResponse)
+      await store.dispatch('TimelineSpace/fetchEmojis', {})
+      expect(store.state.TimelineSpace.emojis).toEqual([
+        {
+          name: ':emacs:',
+          image: 'http://example.com/emacs'
+        },
+        {
+          name: ':ruby:',
+          image: 'http://example.com/ruby'
+        }
+      ])
+    })
+  })
+
+  describe('fetchInstance', () => {
+    it('should be updated', async () => {
+      const mockResponse = {
+        max_toot_chars: 5000
+      }
+      Mastodon.get.mockResolvedValue(mockResponse)
+      await store.dispatch('TimelineSpace/fetchInstance', {})
+      expect(store.state.TimelineSpace.tootMax).toEqual(5000)
+    })
+  })
+
+  describe('loadUnreadNotification', () => {
+    describe('success', () => {
+      it('should be updated', async () => {
+        ipcMain.once('get-unread-notification', (event, _) => {
+          event.sender.send('response-get-unread-notification', {
+            direct: false,
+            local: false,
+            public: false
+          })
+        })
+        await store.dispatch('TimelineSpace/loadUnreadNotification')
+        expect(store.state.TimelineSpace.unreadNotification).toEqual({
+          direct: false,
+          local: false,
+          public: false
+        })
+      })
+    })
+    describe('error', () => {
+      it('should be set default', async () => {
+        ipcMain.once('get-unread-notification', (event, _) => {
+          event.sender.send('error-get-unread-notification', new Error())
+        })
+        await store.dispatch('TimelineSpace/loadUnreadNotification')
+        expect(store.state.TimelineSpace.unreadNotification).toEqual({
+          direct: unreadSettings.Direct.default,
+          local: unreadSettings.Local.default,
+          public: unreadSettings.Public.default
+        })
+      })
+    })
+  })
+
+  describe('fetchContentsTimelines', () => {
+    it('should be called', async () => {
+      await store.dispatch('TimelineSpace/fetchContentsTimelines', {})
+      expect(homeStore.actions.fetchTimeline).toHaveBeenCalled()
+      expect(notificationStore.actions.fetchNotifications).toHaveBeenCalled()
+      expect(DMStore.actions.fetchTimeline).toHaveBeenCalled()
+      expect(LocalStore.actions.fetchLocalTimeline).toHaveBeenCalled()
+      expect(PublicStore.actions.fetchPublicTimeline).toHaveBeenCalled()
+    })
+  })
+})