Injector Extension

InjectorExtension is JUnit Jupiter extension that allows binding mock objects to the Injector. It’s the JUnit Jupiter counterpart of the old InjectorRule.

Creating the extension

Like with any extension, the only thing you need to do in order to incorporate it in your test class is to add an @ExtendWith annotation.

In order to bind a mock, simply annotate the mocked object with an @InjectedMock annotation:

@ExtendWith(InjectorExtension.class)
public class MyTest{
    @Mock
    @InjectedMock
    public OsRepository osRepository;