ContextRefreshedEvent fired too early in Spring integration test
ContextRefreshedEvent fired too early in Spring integration test
I want to test a class like Example that handles a ContextRefreshedEvent and connects to a server in the handler method:
Example
ContextRefreshedEvent
public class Example
@EventListener
public void onApplicationEvent(ContextRefreshedEvent event)
startWebSocketConnection();
// ...
But in the integration test the application context is built before the web socket server is up and running, so I get an exception saying that the connection failed (java.net.ConnectException: Connection refused: no further information in this case).
java.net.ConnectException: Connection refused: no further information
The test looks like this:
@ExtendWith(SpringExtension.class)
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
@SpringBootTest
public class WebSocketDataSourceTest
@Autowired
private Example example;
@Autowired
private WebSocketServer server; // created too late
// ...
Is it somehow possible to suppress the ContextRefreshedEvent or to defer the creation of the application context, so that the web socket server can start before? Or is there another solution?
ContextRefreshedEvent
1 Answer
1
There seems to be no way to suppress an event fired by the Spring framework or to defer the application context creation. So I came up with the following workaround:
import org.springframework.core.env.Environment;
public class Example
private boolean skipNextEvent;
@Autowired
public Example(Environment environment)
skipNextEvent = environment.acceptsProfiles("test");
@EventListener
public void onApplicationEvent(ContextRefreshedEvent event)
if (skipNextEvent)
skipNextEvent = false;
return;
startWebSocketConnection();
// ...
The test triggers the event handler manually.
@ExtendWith(SpringExtension.class)
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
@SpringBootTest
@ActiveProfiles("test") // set profile "test"
public class WebSocketDataSourceTest
@Autowired
private Example example;
@Autowired
private WebSocketServer server;
@Test
public void shouldWork()
// ...
example.onApplicationEvent(null); // trigger manually
// ...
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