Mockito Stubbing - junit

Question

Listed below is a method I am trying to test using Junit and Mockito
Java Code
public String getAuthenticationService() {
Authentication endpoint;
String token = "";
try {
URL wsdlURL = new URL(authenticationURL);
SoapService service = new SoapService(wsdlURL,
new QName("SomeQName",
"SoapService"));
endpoint = service.getAuthenticationPort();
token = endpoint.authenticate(username, password);
} catch (Exception e) {
throw new GenericException(
"OpenText AuthenticationService not working Error is "
+ e.toString());
}
return token;
}
Junit method
public void testGetAuthenticationService()
throws AuthenticationException_Exception {
AuthenticationService mockService = Mockito
.mock(AuthenticationService.class);
Authentication mockEndpoint = Mockito.mock(Authentication.class);
Mockito.when(mockService.getAuthenticationPort()).thenReturn(
mockEndpoint);
Mockito.when(mockEndpoint.authenticate(username, password)).thenReturn(
token);
}
When I run the Junit test case the endpoint.authenticate tries to connect to the actaul soap service, and the method stubbing is not working, what am I doing wrong here

Answer 1

Your mockService seems to be a good replacement for your SoapService, but you aren't giving yourself an opportunity to refer to it in your code. Your test calls the code, which calls the SoapService constructor, so you get a real service. Consider this refactor:
public String getAuthenticationService() {
try {
URL wsdlURL = new URL(authenticationURL);
SoapService service = new SoapService(wsdlURL,
new QName("SomeQName", "SoapService"));
return getAuthenticationService(service);
} catch (Exception e) {
throw new GenericException(
"OpenText AuthenticationService not working Error is "
+ e.toString());
}
}
/** package-private for testing - call this from your test instead */
String getAuthenticationService(AuthenticationService service) {
try {
Authentication endpoint = service.getAuthenticationPort();
String token = endpoint.authenticate(username, password);
return token;
} catch (Exception e) {
throw new GenericException(
"OpenText AuthenticationService not working Error is "
+ e.toString());
}
}
Now you can pass your mockService into getAuthenticationService(service) and your code will use your mock rather than the SoapService it creates inline.
As as alternative, you can also give yourself a seam by wrapping the SoapService constructor:
/** overridden in tests */
protected AuthenticationService createSoapService(String url, QName qname) {
return new SoapService(url, qname);
}
public String getAuthenticationService() {
try {
URL wsdlURL = new URL(authenticationURL);
SoapService service = createSoapService(wsdlURL,
new QName("SomeQName", "SoapService"));
Authentication endpoint = service.getAuthenticationPort();
String token = endpoint.authenticate(username, password);
return token;
} catch (Exception e) {
throw new GenericException(
"OpenText AuthenticationService not working Error is "
+ e.toString());
}
}
// in your test:
SystemUnderTest yourSystem = new YourSystem() {
#Override protected AuthenticationService createAuthenticationService(
String url, QName qname) {
return mockService;
}
}