How to test constructor of a class that has a @PostConstruct method using Spring?

Question

If I have a class with a @PostConstruct method, how can I test its constructor and thus its @PostConstruct method using JUnit and Spring? I can\'t simply use new ClassName(param

Answer 1

Have a look at Spring JUnit Runner.

You need to inject your class in your test class so that spring will construct your class and will also call post construct method. Refer the pet clinic example.

eg:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:your-test-context-xml.xml")
public class SpringJunitTests {

    @Autowired
    private Connection c;

    @Test
    public void tests() {
        assertEquals("arf arf arf", c.getX1();
    }

    // ...