Integration test status quo for SpEL 'selector' support in messaging

See gh-30550

spring-websocket/src/test/java/org/springframework/web/socket/config/annotation/WebSocketMessageBrokerConfigurationSupportTests.java

@@ -35,6 +35,7 @@ import org.springframework.messaging.handler.annotation.MessageMapping;
 import org.springframework.messaging.handler.annotation.SendTo;
 import org.springframework.messaging.simp.SimpMessageType;
 import org.springframework.messaging.simp.annotation.SubscribeMapping;
+import org.springframework.messaging.simp.broker.DefaultSubscriptionRegistry;
 import org.springframework.messaging.simp.broker.SimpleBrokerMessageHandler;
 import org.springframework.messaging.simp.config.MessageBrokerRegistry;
 import org.springframework.messaging.simp.stomp.StompCommand;
@@ -60,6 +61,7 @@ import org.springframework.web.socket.server.support.WebSocketHttpRequestHandler
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.InstanceOfAssertFactories.BOOLEAN;
+import static org.assertj.core.api.InstanceOfAssertFactories.type;
 import static org.mockito.Mockito.mock;
 
 /**
@@ -67,6 +69,7 @@ import static org.mockito.Mockito.mock;
  *
  * @author Rossen Stoyanchev
  * @author Sebastien Deleuze
+ * @author Sam Brannen
  */
 class WebSocketMessageBrokerConfigurationSupportTests {
 
@@ -161,6 +164,32 @@ class WebSocketMessageBrokerConfigurationSupportTests {
 		assertThat(handler.getHeartbeatValue()).containsExactly(15000, 15000);
 	}
 
+	@Test
+	void selectorHeaderEnabledByDefault() {
+		ApplicationContext context = createContext(TestChannelConfig.class, TestConfigurer.class);
+		SimpleBrokerMessageHandler simpleBrokerMessageHandler = simpleBrokerMessageHandler(context);
+
+		assertThat(simpleBrokerMessageHandler.getSubscriptionRegistry())
+				.asInstanceOf(type(DefaultSubscriptionRegistry.class))
+				.extracting(DefaultSubscriptionRegistry::getSelectorHeaderName)
+				.isEqualTo("selector");
+	}
+
+	@Test
+	void selectorHeaderDisabled() {
+		ApplicationContext context = createContext(TestChannelConfig.class, SelectorHeaderConfigurer.class);
+		SimpleBrokerMessageHandler simpleBrokerMessageHandler = simpleBrokerMessageHandler(context);
+
+		assertThat(simpleBrokerMessageHandler.getSubscriptionRegistry())
+				.asInstanceOf(type(DefaultSubscriptionRegistry.class))
+				.extracting(DefaultSubscriptionRegistry::getSelectorHeaderName)
+				.isNull();
+	}
+
+	private static SimpleBrokerMessageHandler simpleBrokerMessageHandler(ApplicationContext context) {
+		return context.getBean("simpleBrokerMessageHandler", SimpleBrokerMessageHandler.class);
+	}
+
 	@Test
 	void webSocketMessageBrokerStats() {
 		ApplicationContext context = createContext(TestChannelConfig.class, TestConfigurer.class);
@@ -243,6 +272,22 @@ class WebSocketMessageBrokerConfigurationSupportTests {
 		}
 	}
 
+	@Configuration
+	static class SelectorHeaderConfigurer implements WebSocketMessageBrokerConfigurer {
+
+		@Override
+		public void registerStompEndpoints(StompEndpointRegistry registry) {
+			registry.addEndpoint("/simpleBroker");
+		}
+
+		@Override
+		public void configureMessageBroker(MessageBrokerRegistry registry) {
+			// Explicitly disable selector header support
+			registry.enableSimpleBroker().setSelectorHeaderName(null);
+		}
+
+	}
+
 	@Configuration
 	static class TestChannelConfig extends DelegatingWebSocketMessageBrokerConfiguration {
 

spring-websocket/src/test/java/org/springframework/web/socket/messaging/StompWebSocketIntegrationTests.java

@@ -105,12 +105,15 @@ class StompWebSocketIntegrationTests extends AbstractWebSocketIntegrationTests {
 	}
 
 	@ParameterizedWebSocketTest  // SPR-10930
-	void sendMessageToBrokerAndReceiveReplyViaTopic(WebSocketTestServer server, WebSocketClient webSocketClient, TestInfo testInfo) throws Exception {
+	void sendMessageToBrokerAndReceiveReplyViaTopicWithSelectorHeader(WebSocketTestServer server, WebSocketClient webSocketClient, TestInfo testInfo) throws Exception {
 		super.setup(server, webSocketClient, testInfo);
 
+		String destination = "destination:/topic/foo";
+		String selector = "selector:headers.foo == 'bar'";
+
 		TextMessage m0 = create(StompCommand.CONNECT).headers("accept-version:1.1").build();
-		TextMessage m1 = create(StompCommand.SUBSCRIBE).headers("id:subs1", "destination:/topic/foo").build();
+		TextMessage m1 = create(StompCommand.SUBSCRIBE).headers("id:subs1", destination, selector).build();
-		TextMessage m2 = create(StompCommand.SEND).headers("destination:/topic/foo").body("5").build();
+		TextMessage m2 = create(StompCommand.SEND).headers(destination, "foo:bar").body("5").build();
 
 		TestClientWebSocketHandler clientHandler = new TestClientWebSocketHandler(2, m0, m1, m2);