migrate redux store

Summary: Migrating redux stores to TypeScript

Reviewed By: passy

Differential Revision: D16579796

fbshipit-source-id: e3e507f17f1bdd57eb45e30cb0b28aaee6c4521c

src/reducers/__tests__/connections.node.tsx

@@ -0,0 +1,27 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+import reducer from '../connections';
+import BaseDevice from '../../devices/BaseDevice';
+import {State} from '../connections';
+
+test('REGISTER_DEVICE doesnt remove error', () => {
+  const initialState: State = reducer(undefined, {
+    type: 'SERVER_ERROR',
+    payload: 'something went wrong',
+  });
+
+  // Precondition
+  expect(initialState.error).toEqual('something went wrong');
+
+  const endState = reducer(initialState, {
+    type: 'REGISTER_DEVICE',
+    payload: new BaseDevice('serial', 'physical', 'title'),
+  });
+
+  expect(endState.error).toEqual('something went wrong');
+});