integration testing spring controllers
Post on 03-Jan-2016
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Lightning Talk by Ted Young
Integration Testing Spring Controllers
What is Integration Testing?
Unit Test Integration Test
Isolation Entire Stack
Unit Versus Integration Tests
Unit Test Integration Test
Isolation Entire Stack
Inject Mocks Inject Implementations
Unit Versus Integration Tests
Unit Test Integration Test
Isolation Entire Stack
Inject Mocks Inject Implementations
Verifies Code Verifies Application
Unit Versus Integration Tests
public void persist(Foo foo) {entityManager.persist(foo);
}
public List<Foo> find() {return entityManager
.createQuery("from Foo").getResultList();}
public List<Foo> findByName(String name) {CriteriaBuilder cb = entityManager.getCriteriaBuilder();CriteriaQuery<Foo> query = cb.createQuery(Foo.class);Root<Foo> root = query.from(Foo.class);query.where(cb.equal(root.get(Foo_.name), name));return entityManager.createQuery(query).getResultList();
}
Unit Tests Aren’t Always Best
External Tool (e.g. JMeter) Test Harness (e.g. JUnit)
External Tool IDE, Maven, CI, etc.
Integration Testing Controllers
External Tool (e.g. JMeter) Test Harness (e.g. JUnit)
External Tool IDE, Maven, CI, etc.
Script Actions Build Requests in Java
Integration Testing Controllers
External Tool (e.g. JMeter) Test Harness (e.g. JUnit)
External Tool IDE, Maven, CI, etc.
Script Actions Build Requests in Java
No Knowledge of Application Intimate Knowledge of Application:• Security System• Data Model• Make Use of Spring
Integration Testing Controllers
External Tool (e.g. JMeter) Test Harness (e.g. JUnit)
External Tool IDE, Maven, CI, etc.
Script Actions Build Requests in Java
No Knowledge of Application Intimate Knowledge of Application:• Security System• Data Model• Make Use of Spring
Refactor = Rewrite Make Use of IDE Tools
Integration Testing Controllers
External Tool (e.g. JMeter) Test Harness (e.g. JUnit)
External Tool IDE, Maven, CI, etc.
Script Actions Build Requests in Java
No Knowledge of Application Intimate Knowledge of Application:• Security System• Data Model• Make Use of Spring
Refactor = Rewrite Make Use of IDE Tools
Errors at Runtime Errors at Compiletime
Integration Testing Controllers
Testing a Controller
Servlet Container
Controller
Testing a Spring MVC Controller
Servlet Container
Controller
Spring MVC
Testing a Spring MVC Controller
Servlet Container
Controller
Spring MVC
View Resolution
Transactions Request Mapping
Testing a Spring MVC Controller
Servlet Container
Controller
Spring MVC
View Resolution
Transactions Request Mapping
DispatcherServlet
Mocking DispatcherServlet
DispatcherServlet
Mocking DispatcherServlet
DispatcherServlet
WebApplicationContext
Mocking DispatcherServlet
DispatcherServlet
WebApplicationContext
ServletConfig ServletContext
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring.xml")
public class SomeControllerTests {
...
}
Spring and JUnit
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring.xml",
loader=MockWebApplicationContextLoader.class)
public class SomeControllerTests {
...
}
Spring and JUnit
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring.xml",
loader=MockWebApplicationContextLoader.class)
@MockWebApplication(name="some-controller",webapp="/src/main/webapp")
public class SomeControllerTests {
...
}
Spring and JUnit
How Many Use:
• JSPs
• Velocity
• Freemarker
• Facelets
View Technologies
@Autowired
private DispatcherServlet servlet;
@Autowired
private SomeRepository repository;
@Test
public void viewTest() throws Exception {
MockHttpServletRequest request =
new MockHttpServletRequest("GET", "/view");
request.addParameter("id", "0");
MockHttpServletResponse response =
new MockHttpServletResponse();
servlet.service(request, response);
String results = response.getContentAsString().trim();
Assert.assertEquals(
"<html><body>Hello World!</body></html>",
results);
}
An Example Test
@Testpublic void saveTest() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("POST", "/");
request.addParameter("name", "Ted");
MockHttpServletResponse response = new MockHttpServletResponse();
servlet.service(request, response);
Assert.assertEquals("Ted", repository.find(1).getName());}
Prepare and Review Model
@Test(expected=NestedServletException.class)public void saveFailedTest() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("POST", "/");
request.addParameter("name", "");
MockHttpServletResponse response = new MockHttpServletResponse();
servlet.service(request, response);}
Test Validation
@Test(expected=NestedServletException.class)public void secureFailedTest() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/secure/view");
MockHttpServletResponse response = new MockHttpServletResponse();
servlet.service(request, response);}
Test Security
@Testpublic void secureTest() throws Exception {
SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(
"Ted", "password"));
MockHttpServletRequest request = new MockHttpServletRequest("GET", "/secure/view");
MockHttpServletResponse response = new MockHttpServletResponse();
servlet.service(request, response);
String results = response.getContentAsString().trim();
Assert.assertEquals("<html><body>Hello Ted!</body></html>",results);
}
Test Security
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