Add Hello RSocket Sample

Fixes gh-7504

samples/boot/hellorsocket/src/integration-test/java/sample/HelloRSocketApplicationITests.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2002-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package sample;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.rsocket.context.RSocketServerInitializedEvent;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.ApplicationListener;
+import org.springframework.messaging.rsocket.RSocketRequester;
+import org.springframework.security.rsocket.metadata.BasicAuthenticationEncoder;
+import org.springframework.security.rsocket.metadata.UsernamePasswordMetadata;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+import reactor.core.publisher.Mono;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.springframework.security.rsocket.metadata.UsernamePasswordMetadata.BASIC_AUTHENTICATION_MIME_TYPE;
+
+/**
+ * @author Rob Winch
+ * @since 5.0
+ */
+@RunWith(SpringRunner.class)
+@TestPropertySource(properties = "spring.rsocket.server.port=0")
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+public class HelloRSocketApplicationITests {
+
+	@Autowired
+	RSocketRequester.Builder requester;
+
+	@Test
+	public void messageWhenAuthenticatedThenSuccess() {
+		UsernamePasswordMetadata credentials = new UsernamePasswordMetadata("user", "password");
+		RSocketRequester requester = this.requester
+				.rsocketStrategies(builder -> builder.encoder(new BasicAuthenticationEncoder()))
+				.setupMetadata(credentials, BASIC_AUTHENTICATION_MIME_TYPE)
+				.connectTcp("localhost", getPort())
+				.block();
+
+		String message = requester.route("message")
+				.data(Mono.empty())
+				.retrieveMono(String.class)
+				.block();
+
+		assertThat(message).isEqualTo("Hello");
+	}
+
+	@Test
+	public void messageWhenNotAuthenticatedThenError() {
+		RSocketRequester requester = this.requester
+				.connectTcp("localhost", getPort())
+				.block();
+
+		assertThatThrownBy(() -> requester.route("message")
+				.data(Mono.empty())
+				.retrieveMono(String.class)
+				.block())
+				.isNotNull();
+	}
+
+	// FIXME: Waiting for @LocalRSocketServerPort
+	// https://github.com/spring-projects/spring-boot/pull/18287
+
+	@Autowired
+	Config config;
+
+	private int getPort() {
+		return this.config.port;
+	}
+
+	@TestConfiguration
+	static class Config implements ApplicationListener<RSocketServerInitializedEvent> {
+		private int port;
+
+		@Override
+		public void onApplicationEvent(RSocketServerInitializedEvent event) {
+			this.port = event.getrSocketServer().address().getPort();
+		}
+	}
+}