add navigation reducer test

test/unit/redux/navigation.test.js

@@ -7,11 +7,20 @@ const {
     setLoginOpen,
     setRegistrationOpen,
     setSearchTerm,
-    toggleLoginOpen
+    toggleLoginOpen,
+    handleRegistrationRequested
 } = require('../../../src/redux/navigation');
 
 
 describe('unit test lib/validate.js', () => {
+    beforeEach(() => {
+        // override existing window.location definition, to make it testable
+        Object.defineProperty(global.window, 'location', {
+            value: '/',
+            writable: true
+        });
+    });
+
     test('initialState', () => {
         let defaultState;
         /* navigationReducer(state, action) */
@@ -238,4 +247,28 @@ describe('unit test lib/validate.js', () => {
         const resultState = navigationReducer(initialState, action);
         expect(resultState.loginOpen).toBe(false);
     });
+
+    test('handleRegistrationRequested with useScratch3Registration true navigates user to /join, ' +
+        'and does NOT open scratch 2 registration', () => {
+        const initialState = {
+            registrationOpen: false,
+            useScratch3Registration: true
+        };
+        const action = handleRegistrationRequested();
+        const resultState = navigationReducer(initialState, action);
+        expect(resultState.registrationOpen).toBe(false);
+        expect(global.window.location).toEqual('/join');
+    });
+
+    test('handleRegistrationRequested with useScratch3Registration false does NOT navigate user away, ' +
+        'DOES open scratch 2 registration', () => {
+        const initialState = {
+            registrationOpen: false,
+            useScratch3Registration: false
+        };
+        const action = handleRegistrationRequested();
+        const resultState = navigationReducer(initialState, action);
+        expect(resultState.registrationOpen).toBe(true);
+        expect(global.window.location).toEqual('/');
+    });
 });