Finish tests for extension-store fetch and sync.

test/unit/extension-store-test.js

@@ -1,5 +1,18 @@
 const assert = require('assert')
+const sinon = require('sinon')
 
+const KEYS_TO_SYNC = ['KeyringController', 'PreferencesController']
+const mockSyncGetResult = 123
+const syncGetStub = sinon.stub().callsFake((str, cb) => cb(mockSyncGetResult))
+const syncSetStub = sinon.stub().callsFake((str, cb) => cb())
+
+window.storage = {
+  sync: {
+    get: syncGetStub,
+    set: syncSetStub,
+  },
+}
+window.runtime = {}
 const ExtensionStore = require('../../app/scripts/lib/extension-store')
 
 describe('Extension Store', function () {
@@ -11,19 +24,44 @@ describe('Extension Store', function () {
 
   describe('#fetch', function () {
     it('should return a promise', function () {
-
+      const extensionStoreFetchResult = extensionStore.fetch()
+      assert.ok(Promise.resolve(extensionStoreFetchResult) === extensionStoreFetchResult)
     })
-    it('after promise resolution, should have loaded the proper data from the extension', function () {
-
+    it('after promise resolution, should have loaded the proper data from the extension', function (done) {
+      extensionStore.fetch()
+        .then((result) => {
+          assert.deepEqual(syncGetStub.getCall(0).args[0], KEYS_TO_SYNC.slice(0))
+          assert.equal(result, mockSyncGetResult)
+          done()
+        })
     })
   })
 
   describe('#sync', function () {
     it('should return a promise', function () {
-
+      const extensionStoreSyncResult = extensionStore.sync()
+      assert.ok(Promise.resolve(extensionStoreSyncResult) === extensionStoreSyncResult)
     })
-    it('after promise resolution, should have synced the proper data from the extension', function () {
-
+    it('after promise resolution, should have synced the proper data from the extension', function (done) {
+      const mockState = {
+        data: {
+          KeyringController: 5,
+          PreferencesController: 6,
+          someOtherData: 7
+        },
+        someOtherProp: {
+          evenMoreData: 8,
+        },
+      }
+      const expectedDataToSync = {
+        KeyringController: 5,
+        PreferencesController: 6,
+      }
+      extensionStore.sync(mockState)
+        .then(() => {
+          assert.deepEqual(syncSetStub.getCall(0).args[0], expectedDataToSync)
+          done()
+        })
     })
   })
 })