Mocking the Qualified beans using mockito for a spring-boot application - spring

Question

consider my scenario
public class SomeClass {
#Autowired #Qualifier("converter1") private IConverter converter1;
#Autowired #Qualifier("converter2") private IConverter converter2;
public void doSomeAction(String mimeType) {
converter1.execute();
converter2.execute();
}
}
This is my code.
In order to test this
#RunWith(MockitoJUnitRunner.class)
public class SomeClassTest {
#Mock(name="converter1") IConverter converter1;
#Mock(name="converter2") IConverter converter2;
#InjectMocks SomeClass class = new SomeClass();
#Test
public void testGetListOfExcelConverters() throws Exception {
class.doSomeAction("abcd");
}
}
Here the mocks are not getting injected, please help with the proper mechanism for mocking a qualified beans.
If this is not the right way to code using spring, please let me know the correct method for using this.

Answer 1

Not sure what error you are getting, but your test class doesn't compile because you have what looks like you intend to be a variable name using the keyword class. This worked for me:
#RunWith(MockitoJUnitRunner.class)
public class SomeClassTest {
#Mock(name="converter1") IConverter converter1;
#Mock(name="converter2") IConverter converter2;
#InjectMocks
SomeClass clazz = new SomeClass();
#Test
public void testGetListOfExcelConverters() throws Exception {
clazz.doSomeAction("abcd");
verify(converter1).execute();
verify(converter2).execute();
}
}
And by "worked for me" I mean that the test actually ran and passed. Note I added a couple of verify statements to assert that the injected mocks got called.
I used the SomeClass code you provided as-is.

Answer 2

For me, both existing answers were insufficient.
#riddy 's answer did not take into account different test cases.
#jhericks ' answer did not use the Spring context, which caused other issues down the line.
Here's my solution:
#MockBean
#Qualifier("myNamedBean")
private SomeBean someBean;
As simple as that.

Answer 3

You can mock beans using a test configuration:
#Configuration
public class TestConfig {
#Bean
public MyService myService() {
return Mockito.mock( MyService.class );
}
}

Answer 4

I've found this solution:
#RunWith(MockitoJUnitRunner.class)
public class SomeClassTest {
#Mock()
#Qualifier("converter1")
IConverter converter1;
#Mock()
#Qualifier("converter1")
IConverter converter2;
#InjectMocks SomeClassTest testObj = new SomeClassTest();
#Test
public void testGetListOfExcelConverters() throws Exception {
testObj.doSomeAction("abcd");
verify(converter1).execute();
verify(converter2).execute();
}
}
BTW, I haven't found this in doc.

Answer 5

In my app, the #Autowired beans are passed as constructor args. None of the variations (albeit JUnit 5 version) were working. Instead, I had to "kick it old school" and simply instantiate the mocks directly.
public class SomeClass {
private final IConverter converter1;
private final IConverter converter2;
public SomemClass( #Autowired #Qualifier("converter1") conv1,
#Autowired #Qualifier("converter2") conv2 ) {
this.converter1 = conv1;
this.converter2 = conv2;
}
public void doSomeAction(String mimeType) {
converter1.execute();
converter2.execute();
}
}
public class SomeClassTest {
IConverter converter1;
IConverter converter2;
SomeClass pojo;
#BeforeEach
public void setup() {
converter1 = Mockito.mock( IConverter.class );
converter2 = Mockito.mock( IConverter.class );
pojo = new SomeClass( converter1, converter2 );
}
#Test
public void testGetListOfExcelConverters() throws Exception {
pojo.doSomeAction("abcd");
}
}