data rest crud, angular fe (#1199)

* data rest crud, angular fe

* fix formatting, remove extra imports

* fix config

* change student entity to employee

* expose ids

* update boot version, removes ids, check null id

spring-rest-angular/src/test/java/org/baeldung/web/service/EmployeeCRUDRepositoryIntegrationTest.java

@@ -0,0 +1,47 @@
+package org.baeldung.web.service;
+
+import static org.junit.Assert.*;
+
+import org.baeldung.web.entity.Employee;
+import org.baeldung.web.main.Application;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = Application.class, webEnvironment = WebEnvironment.DEFINED_PORT)
+public class EmployeeCRUDRepositoryIntegrationTest {
+
+    @Autowired
+    private TestRestTemplate template;
+
+    private static final String EMPLOYEE_ENDPOINT = "http://localhost:8080/employees/";
+    private static int EMPLOYEE_ID = 1;
+    private static int EMPLOYEE_AGE = 25;
+
+    @Test
+    public void whenEmployeeCRUDOperations_thenCorrect() {
+        Employee Employee = new Employee(EMPLOYEE_ID, "Bryan", 20);
+        ResponseEntity<Employee> postResponse = template.postForEntity(EMPLOYEE_ENDPOINT, Employee, Employee.class, "");
+        assertEquals("status is not 201", HttpStatus.CREATED, postResponse.getStatusCode());
+
+        Employee.setAge(EMPLOYEE_AGE);
+        Employee patchResponse = template.patchForObject(EMPLOYEE_ENDPOINT + "/" + EMPLOYEE_ID, Employee, Employee.class);
+        assertEquals("age is not 25", Integer.valueOf(EMPLOYEE_AGE), patchResponse.getAge());
+
+        ResponseEntity<Employee> getResponse = template.getForEntity(EMPLOYEE_ENDPOINT + "/" + EMPLOYEE_ID, Employee.class, "");
+        assertEquals("status is not 200", HttpStatus.OK, getResponse.getStatusCode());
+
+        template.delete(EMPLOYEE_ENDPOINT + "/" + EMPLOYEE_ID);
+
+        getResponse = template.getForEntity(EMPLOYEE_ENDPOINT + "/" + EMPLOYEE_ID, Employee.class, "");
+        assertEquals("status is not 404", HttpStatus.NOT_FOUND, getResponse.getStatusCode());
+
+    }
+}