What is the best way to test that a spring application context fails to start?

Question

I use the spring-boot-starter-web and spring-boot-starter-test.

Let\'s say I have a class for binding configuration properties:

@ConfigurationPropert         


        

Answer 1

I think the easiest way is:

public class InvalidUrlTest {

    @Rule
    public DisableOnDebug testTimeout = new DisableOnDebug(new Timeout(5, TimeUnit.SECONDS));
    @Rule
    public ExpectedException expected = ExpectedException.none();

    @Test
    public void shouldFailOnStartIfUrlInvalid() {
        // configure ExpectedException
        expected.expect(...

        MyApplication.main("--dummy.url=123:456");
    }

// other cases
}