Add integration tests to the pojo sample

spring-cloud-function-samples/spring-cloud-function-sample-pojo/src/test/java/com/example/SampleApplicationTests.java

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+/*
+ * Copyright 2016-2017 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
+ *
+ *      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 org.junit.Test;
+import org.junit.runner.RunWith;
+
+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.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
+public class SampleApplicationTests {
+
+	@LocalServerPort
+	private int port;
+
+	@Test
+	public void words() {
+		assertThat(new TestRestTemplate()
+				.getForObject("http://localhost:" + port + "/words", String.class))
+						.isEqualTo("{\"value\":\"foo\"}{\"value\":\"bar\"}");
+	}
+
+	@Test
+	public void uppercase() {
+		assertThat(new TestRestTemplate().postForObject(
+				"http://localhost:" + port + "/uppercase", "{\"value\":\"foo\"}",
+				String.class)).isEqualTo("{\"value\":\"FOO\"}");
+	}
+
+}