added find reviews by vehicle route

typescript-express-reviews/src/api/Review/findByVehicle.ts

@@ -0,0 +1,11 @@
+import express, { Request, Response } from 'express';
+import Review from '../../models/review';
+
+async function findByVehicle (request: Request, response: Response) {
+  const limit = request.body.limit != null ? request.body.limit : 5;
+  const skip = request.body.skip != null ? request.body.skip : 5;
+  const reviews = await Review.find({ vehicleId: request.body.vehicleId }).sort({ createdAt: -1 }).skip(skip).limit(limit);
+  return response.status(200).json({ reviews: reviews });
+};
+
+export default findByVehicle;

typescript-express-reviews/src/api/Vehicle/findById.ts

@@ -3,7 +3,7 @@ import Vehicle from '../../models/vehicle';
 import Review from '../../models/review';
 
 async function last5(request: Request, response: Response) {
-  const limit = request.body.limit ? request.body.limit : 5;
+  const limit = request.body.limit != null ? request.body.limit : 5;
   const vehicle = await Vehicle.findById({ _id: request.body.vehicleId });
   const reviews = await Review.find({ vehicleId: request.body.vehicleId }).sort({ createdAt: -1 }).limit(limit);
 

typescript-express-reviews/src/api/index.ts

@@ -3,6 +3,7 @@ import register from './User/register';
 import login from './User/login';
 import create from './Review/create';
 import last5 from './Vehicle/findById';
+import findByVehicle from './Review/findByVehicle';
 import bodyParser from 'body-parser';
 import connect from '../models/connect';
 
@@ -22,6 +23,7 @@ void async function main() {
   app.use('/login', login);
   app.use('/review/create', create);
   app.use('/vehicle/recent/reviews', last5);
+  app.use('/vehicle/reviews', findByVehicle);
 
   await app.listen(port);
   console.log('Listening on port ' + port);

typescript-express-reviews/tests/Vehicle.test.ts

@@ -4,6 +4,7 @@ import Review from '../src/models/review';
 import User from '../src/models/user';
 import { describe, it } from 'mocha';
 import last5 from '../src/api/Vehicle/findById';
+import findByVehicle from '../src/api/Review/findByVehicle';
 import assert from 'assert';
 import sinon from 'sinon';
 
@@ -60,4 +61,51 @@ describe('Vehicle', function() {
     assert.equal(res.json.getCall(0).args[0].reviews.length, 5);
     assert(res.json.getCall(0).args[0].reviews[0].text.endsWith('6'));
   });
+
+  it('Should find all the reviews for the given vehicleId, adhering to the skip and limit parameters', async function() {
+    const mockRequest = (body) => ({
+      body
+    })
+    const mockResponse = (): ResponseStub => {
+      const res: ResponseStub = {
+        status: sinon.stub().returnsThis(),
+        json: sinon.stub().returnsThis()
+      };
+      return res;
+    };
+    const user = await User.create({
+      email: 'test@localhost.com',
+      firstName: 'Test',
+      lastName: 'Testerson'
+    });
+    const vehicle = await Vehicle.create(
+      {
+        make: 'Tesla',
+        model: 'Model S',
+        year: 2022,
+        images: [
+          'https://tesla-cdn.thron.com/delivery/public/image/tesla/6139697c-9d6a-4579-837e-a9fc5df4a773/bvlatuR/std/1200x628/Model-3-Homepage-Social-LHD',
+          'https://www.tesla.com/sites/default/files/images/blogs/models_blog_post.jpg'
+        ],
+        numReviews: 0,
+        averageReview: 0
+      },
+    );
+    for (let i = 0; i < 7; i++) {
+      await Review.create({
+        rating: i > 5 ? 5 : i, 
+        text: 'This is a review that must have length greater than 30. ' + i, 
+        vehicleId: vehicle._id,
+        userId: user._id
+      });
+    }
+    vehicle.numReviews = 6;
+    vehicle.averageReview = 3;
+    await vehicle.save();
+    const req = mockRequest({ vehicleId: vehicle._id, limit: 0, skip: 0 });
+    const res = mockResponse();
+    await findByVehicle(req, res);
+    assert.equal(res.json.getCall(0).args[0].reviews.length, 7);
+    assert(res.json.getCall(0).args[0].reviews[0].text.endsWith('6'));
+  });
 });