Open pom.xml and you will find pom.xml under the root directory of the project itself.

You will be able to see some tabs at the bottom of the pom.xml file; select the Dependencies tab and click on the Add button of the Dependencies section.

A Select Dependency window will appear; enter Group Id as com.jayway.jsonpath, Artifact Id as json-path-assert, and Version as 0.8.1. Select Scope as test, click on the OK button, and save pom.xml.

Now create a class called CartRestControllerTest under the com.packt.webstore.controller package in the source folder, src/test/java. Now add the following code to it:

package com.packt.webstore.controller;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
import static org.springframework.test.web.servlet...