Add POJO sample and switch to using that for testing

spring-cloud-function-samples/spring-cloud-function-sample-pojo/src/main/java/com/example/SampleApplication.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright 2013-2016 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 com.example;
+
+import java.util.function.Function;
+import java.util.function.Supplier;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+import reactor.core.publisher.Flux;
+
+@SpringBootApplication
+public class SampleApplication {
+
+	@Bean
+	public Function<Flux<Foo>, Flux<Bar>> uppercase() {
+		return flux -> flux.map(value -> new Bar(value.uppercase()));
+	}
+
+	@Bean
+	public Supplier<Flux<Bar>> words() {
+		return () -> Flux.fromArray(new Bar[] { new Bar("foo"), new Bar("bar") });
+	}
+
+	@Bean
+	public Function<Flux<Foo>, Flux<Bar>> lowercase() {
+		return flux -> flux.map(value -> new Bar(value.lowercase()));
+	}
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleApplication.class, args);
+	}
+
+}
+
+class Foo {
+
+	private String value;
+
+	Foo() {
+	}
+
+	public String lowercase() {
+		return value.toLowerCase();
+	}
+
+	public Foo(String value) {
+		this.value = value;
+	}
+
+	public String uppercase() {
+		return value.toUpperCase();
+	}
+
+	public String getValue() {
+		return value;
+	}
+
+	public void setValue(String value) {
+		this.value = value;
+	}
+}
+
+class Bar {
+
+	private String value;
+
+	Bar() {
+	}
+
+	public Bar(String value) {
+		this.value = value;
+	}
+
+	public String getValue() {
+		return value;
+	}
+
+	public void setValue(String value) {
+		this.value = value;
+	}
+
+}