Provide new config options for streams enabling composition

User can switch off source or sink behaviour (the default is to bind
to input and output streams), and then configure the name of a
supplier (for a source) or consumer (for a sink).

spring-cloud-function-web/src/test/java/org/springframework/cloud/function/web/DefaultRouteTests.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2012-2015 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
+ *
+ *      http://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 org.springframework.cloud.function.web;
+
+import java.net.URI;
+import java.util.function.Function;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.context.embedded.LocalServerPort;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.RequestEntity;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import reactor.core.publisher.Flux;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, properties = "")
+public class DefaultRouteTests {
+
+	@LocalServerPort
+	private int port;
+	@Autowired
+	private TestRestTemplate rest;
+
+	@Test
+	public void explicit() throws Exception {
+		ResponseEntity<String> result = rest.exchange(
+				RequestEntity.post(new URI("/uppercase")).body("foo"), String.class);
+		assertThat(result.getStatusCode()).isEqualTo(HttpStatus.OK);
+		assertThat(result.getBody()).isEqualTo("FOO");
+	}
+
+	@Test
+	public void implicit() throws Exception {
+		ResponseEntity<String> result = rest.exchange(
+				RequestEntity.post(new URI("/")).body("foo"), String.class);
+		assertThat(result.getStatusCode()).isEqualTo(HttpStatus.OK);
+		assertThat(result.getBody()).isEqualTo("FOO");
+	}
+
+	@EnableAutoConfiguration
+	@org.springframework.boot.test.context.TestConfiguration
+	protected static class TestConfiguration {
+		@Bean
+		public Function<Flux<String>, Flux<String>> uppercase() {
+			return flux -> flux.map(value -> value.toUpperCase());
+		}
+	}
+}