Extract out and export onWindowPrompt function and unit test it

Author: Alex Robinson

app/browser/tabMessageBox.js

@@ -14,6 +14,23 @@ const cleanupCallback = (tabId) => {
   return false
 }
 
+const onWindowPrompt = show => (webContents, extraData, title, message, defaultPromptText,
+                               shouldDisplaySuppressCheckbox, isBeforeUnloadDialog, isReload, muonCb) => {
+  const tabId = webContents.getId()
+  const detail = {
+    message,
+    title,
+    buttons: [locale.translation('messageBoxOk'), locale.translation('messageBoxCancel')],
+    cancelId: 1,
+    suppress: false,
+    allowInput: true,
+    defaultPromptText,
+    showSuppress: shouldDisplaySuppressCheckbox
+  }
+
+  show(tabId, detail, muonCb)
+}
+
 const tabMessageBox = {
   init: (state, action) => {
     process.on('window-alert', (webContents, extraData, title, message, defaultPromptText,
@@ -45,22 +62,7 @@ const tabMessageBox = {
       tabMessageBox.show(tabId, detail, muonCb)
     })
 
-    process.on('window-prompt', (webContents, extraData, title, message, defaultPromptText,
-         shouldDisplaySuppressCheckbox, isBeforeUnloadDialog, isReload, muonCb) => {
-      const tabId = webContents.getId()
-      const detail = {
-        message,
-        title,
-        buttons: [locale.translation('messageBoxOk'), locale.translation('messageBoxCancel')],
-        cancelId: 1,
-        suppress: false,
-        allowInput: true,
-        defaultPromptText,
-        showSuppress: shouldDisplaySuppressCheckbox
-      }
-
-      tabMessageBox.show(tabId, detail, muonCb)
-    })
+    process.on('window-prompt', onWindowPrompt(tabMessageBox.show))
 
     return state
   },
@@ -145,3 +147,4 @@ const tabMessageBox = {
 }
 
 module.exports = tabMessageBox
+module.exports.onWindowPrompt = onWindowPrompt

test/unit/app/browser/tabMessageBoxTest.js

@@ -38,8 +38,13 @@ describe('tabMessageBox unit tests', function () {
       useCleanCache: true
     })
 
+    const fakeLocale = {
+      translation: (token) => { return token }
+    }
+
     mockery.registerMock('electron', require('../../lib/fakeElectron'))
     mockery.registerMock('../common/state/tabMessageBoxState', fakeMessageBoxState)
+    mockery.registerMock('../../../js/l10n', fakeLocale)
     tabMessageBox = require('../../../../app/browser/tabMessageBox')
     appActions = require('../../../../js/actions/appActions')
 
@@ -224,4 +229,47 @@ describe('tabMessageBox unit tests', function () {
       })
     })
   })
+
+  describe('onWindowPrompt', () => {
+    const tabId = '123'
+    const webContents = {
+      getId: () => tabId
+    }
+    const extraData = undefined
+    const title = 'some title'
+    const message = 'some message'
+    const defaultPromptText = 'some prompt text'
+    const shouldDisplaySuppressCheckbox = true
+    const isBeforeUnloadDialog = undefined
+    const isReload = undefined
+    const muonCb = 'muonCb'
+
+    it('calls tabMessageBox.show', () => {
+      const mockShow = sinon.stub()
+      const expectecDetail = {
+        message,
+        title,
+        buttons: ['MESSAGEBOXOK', 'MESSAGEBOXCANCEL'],
+        cancelId: 1,
+        suppress: false,
+        allowInput: true,
+        defaultPromptText,
+        showSuppress: shouldDisplaySuppressCheckbox
+      }
+
+      tabMessageBox.onWindowPrompt(mockShow)(
+        webContents,
+        extraData,
+        title,
+        message,
+        defaultPromptText,
+        shouldDisplaySuppressCheckbox,
+        isBeforeUnloadDialog,
+        isReload,
+        muonCb
+      )
+
+      assert.equal(mockShow.withArgs(tabId, expectecDetail, muonCb).calledOnce, true)
+    })
+  })
 })