Add test for ShowsReducer

Author: codeBelt

src/stores/shows/ShowsReducer.spec.js

@@ -0,0 +1,61 @@
+import ActionUtility from '../../utilities/ActionUtility';
+import ShowsReducer from './ShowsReducer';
+import ShowsAction from './ShowsAction';
+import ShowModel from './models/shows/ShowModel';
+import EpisodeModel from './models/episodes/EpisodeModel';
+import CastModel from './models/cast/CastModel';
+
+describe('ShowsReducer', () => {
+  const showsReducer = new ShowsReducer();
+
+  it('returns default state with invalid action type', () => {
+    const action = ActionUtility.createAction('');
+
+    expect(showsReducer.reducer(undefined, action)).toEqual(showsReducer.initialState);
+  });
+
+  describe(ShowsAction.REQUEST_SHOW_FINISHED, () => {
+    it('should update show state', () => {
+      const payload = new ShowModel({});
+      const action = ActionUtility.createAction(ShowsAction.REQUEST_SHOW_FINISHED, payload);
+
+      const actualResult = showsReducer.reducer(showsReducer.initialState, action);
+      const expectedResult = {
+        ...showsReducer.initialState,
+        show: payload,
+      };
+
+      expect(actualResult).toEqual(expectedResult);
+    });
+  });
+
+  describe(ShowsAction.REQUEST_EPISODES_FINISHED, () => {
+    it('should update episodes state', () => {
+      const payload = [new EpisodeModel({})];
+      const action = ActionUtility.createAction(ShowsAction.REQUEST_EPISODES_FINISHED, payload);
+
+      const actualResult = showsReducer.reducer(showsReducer.initialState, action);
+      const expectedResult = {
+        ...showsReducer.initialState,
+        episodes: payload,
+      };
+
+      expect(actualResult).toEqual(expectedResult);
+    });
+  });
+
+  describe(ShowsAction.REQUEST_CAST_FINISHED, () => {
+    it('should update cast state', () => {
+      const payload = [new CastModel({})];
+      const action = ActionUtility.createAction(ShowsAction.REQUEST_CAST_FINISHED, payload);
+
+      const actualResult = showsReducer.reducer(showsReducer.initialState, action);
+      const expectedResult = {
+        ...showsReducer.initialState,
+        actors: payload,
+      };
+
+      expect(actualResult).toEqual(expectedResult);
+    });
+  });
+});