anchor.diff:  [source,java,indent=0]
   [subs="verbatim,quotes"]
   ----
  -	@RunWith(SpringRunner.class)
  +	@ExtendWith(SpringExtension.class)
   
   	// defaults to "file:src/main/webapp"
   	@WebAppConfiguration
  
positive.code: [subs="verbatim,quotes"]
  ----
  	@DirtiesContext(classMode = AFTER_EACH_TEST_METHOD) <1>
  	public class ContextDirtyingTests {
  		// some tests that result in the Spring container being dirtied
  	}
  ----
  
negative.code: ----
  	WebClient webClient;
  
  	@BeforeEach
  	void setup() {
  		webClient = MockMvcWebClientBuilder
  			// demonstrates applying a MockMvcConfigurer (Spring Security)
  			.webAppContextSetup(context, springSecurity())
  