Ivan - Add reducer test [skip ci]

client/src/reducers/__tests__/reducer-test.js

@@ -0,0 +1,56 @@
+const Reducer = require('reducers/reducer');
+
+
+class SomeReducer extends Reducer {
+    getTypeHandlers() {
+        return {
+            'ACTION_1': this.handleAction1
+        };
+    }
+    
+    getInitialState() {
+        return {
+            prop1: 0,
+            prop2: '',
+            prop3: false
+        };
+    }
+
+    handleAction1(state, payload) {
+        return {
+            state: state,
+            payload: payload,
+            prop1: 5,
+            prop2: 'hello',
+            prop3: true
+        };
+    }
+}
+
+describe('Reducer class', function () {
+    let reducer;
+    
+    before(function () {
+        reducer = SomeReducer.getInstance();
+    });
+    
+    it('should call correct handlers for each type', function () {
+        let result = reducer(undefined, {});
+        expect(result).to.deep.equal({
+            prop1: 0,
+            prop2: '',
+            prop3: false
+        });
+
+        result = reducer({prop4: true}, {type: 'ACTION_1', payload: 'PAYLOAD'});
+        expect(result).to.deep.equal({
+            state: {
+                prop4: true
+            },
+            payload: 'PAYLOAD',
+            prop1: 5,
+            prop2: 'hello',
+            prop3: true
+        });
+    });
+});