add test cases for ungit-config and path reducers

Author: AllenFang

src-react/__tests__/reducers/path.test.js

@@ -0,0 +1,73 @@
+import * as types from 'constants/action-types';
+
+import path from 'reducers/path';
+
+describe('path.js reducers', () => {
+  let initialState;
+  const DECREASE_PENDING_ACTIONS = [
+    types.RECEIVE_UNGIT_CONFIG,
+    types.RECEIVE_USER_CONFIG,
+    types.RECEIVE_GIT_VERSION, 
+    types.RECEIVE_LATEST_VERSION 
+  ];
+
+  beforeEach(() => {
+    initialState = {
+      pending: null,
+      errMessage: []
+    };
+  });
+
+  it('should return original state if action doesn\'t match any case' , function() {
+    const state = path(initialState, { type: 'no-op' });
+    expect(state.pending).toEqual(initialState.pending);
+    expect(state.errMessage.length).toEqual(initialState.errMessage.length);
+  });
+
+  describe('when PATH_PAGE_PENDING action dispatch', () => {
+    it('pending state should be calculated correctly', function() {
+      const action1 = { type: types.PATH_PAGE_PENDING, payload: 1 };
+      const action2 = { type: types.PATH_PAGE_PENDING, payload: 3 };
+
+      const state1 = path(initialState, action1);
+      expect(state1.pending).toEqual(initialState.pending + action1.payload);
+
+      const state2 = path(state1, action2);
+      expect(state2.pending).toEqual(state1.pending + action2.payload);
+    });
+  });
+
+  DECREASE_PENDING_ACTIONS.forEach(actionName => {
+    describe(`when ${actionName} action dispatch`, () => {
+      beforeEach(() => {
+        initialState = {
+          pending: 1,
+          errMessage: []
+        };
+      });
+      it('pending state should be minused one', () => {
+        const action = { type: actionName };
+
+        const state = path(initialState, action);
+        expect(state.pending).toEqual(initialState.pending - 1);
+      });
+    });
+  });
+  
+  describe('when PATH_PAGE_API_ERR action dispatch', () => {
+    it('pending state should be minused one', function() {
+      const action = { type: types.PATH_PAGE_API_ERR, payload: 'error message' };
+
+      const state = path(initialState, action);
+      expect(state.pending).toEqual(initialState.pending - 1);
+    });
+
+    it('errMessage state should correct content', function() {
+      const action = { type: types.PATH_PAGE_API_ERR, payload: 'error message' };
+
+      const state = path(initialState, action);
+      expect(state.errMessage.length).toEqual(initialState.errMessage.length + 1);
+      expect(state.errMessage[0]).toEqual(action.payload);
+    });
+  });
+});

src-react/__tests__/reducers/ungit-config.test.js

@@ -0,0 +1,32 @@
+import * as types from 'constants/action-types';
+
+import ungitConfig from 'reducers/ungit-config';
+
+describe('ungit-config.js reducers', () => {
+  let initialState;
+
+  it('should return original state if action doesn\'t match any case' , function() {
+    const state = ungitConfig(initialState, { type: 'no-op' });
+    expect(state).toEqual({});
+  });
+
+  describe('when RECEIVE_UNGIT_CONFIG action dispatch', () => {
+    it('state should have ungit configuration correctly', function() {
+      // TODO: consider to use sinon to mock data and make mock data reuseable and meaningful
+      const action = { type: types.RECEIVE_UNGIT_CONFIG, payload: {
+        config: {
+          allowCheckoutNodes: false,
+          autoStashAndPop: true
+        },
+        platform: 'darwin',
+        userHash: '69d23970c3b39b2a8d68a70c30cab99a2bf46e74',
+        version: 'dev-1.1.16-071f30a',
+        pluginApiVersion: '0.2.0'
+      } };
+
+      const state = ungitConfig(initialState, action);
+      expect(JSON.stringify(state)).toEqual(JSON.stringify(action.payload));
+    });
+  });
+
+});