Integration testing spring boot - spring-boot

Question

I'm trying to test my spring boot application.I'm doing integration testing but my test keeps on failing as the response returned by url cannot be jsonfied.please Help.
Here is the test function:
#Test
public void testRetrieveStudentCourse() throws JSONException {
HttpEntity<String> entity = new HttpEntity<String>(null, headers);
ResponseEntity<String> response = restTemplate.exchange(
createURLWithPort("/student/getdetails/id"),
HttpMethod.GET, entity, String.class);
String expected = "{\"id\":1,\"rollno\":\"2\",\"Address\":\"Chicago\"}";
JSONObject json = new JSONObject(response.getBody());
JSONAssert.assertEquals(expected, json, false);
}
Error:
org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject
at org.json.JSON.typeMismatch(JSON.java:111)
at org.json.JSONObject.<init>(JSONObject.java:159)
at org.json.JSONObject.<init>(JSONObject.java:172)
at testRetrieveStudentCourse(StudentControllerIT.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Answer 1

You can write a IT test as below.
#RunWith(SpringRunner.class)
#SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
#ActiveProfiles("test")
public class JmStudentServiceApplicationTests {
#Autowired
private TestRestTemplate restTemplate;
#Autowired
private StudentRepository studentRepository;
#Test
public void test() {
Student student = new Student();
student.setId("1");
student.setName("Test Student");
studentRepository.createStudent(student);
assertThat(studentRepository.getStudentById("1").getName().equals("Test Student"));
ResponseEntity<Student> responseEntity = restTemplate.getForEntity("/students/by-id/{id}",Student.class,"1");
assertThat(responseEntity.getBody().getName().equals("Test Student"));
}
}
This link IT test explains this in detail.

Answer 2

You receive an XML response. Therefore you cannot create a JSONObject from this response.
Please look at Why RestTemplate GET response is in JSON when should be in XML? for more information about how to get a JSON response.