Shorten standalone sample names

samples/standalone/stream-source/src/main/java/com/example/source/ContractVerifierSampleStreamSourceApplication.java

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+package com.example.source;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+import org.springframework.cloud.stream.messaging.Source;
+import org.springframework.integration.support.MessageBuilder;
+
+@SpringBootApplication
+@EnableBinding(Source.class)
+public class ContractVerifierSampleStreamSourceApplication {
+
+	@Autowired
+	Source source;
+
+	public static void main(String[] args) {
+		SpringApplication.run(ContractVerifierSampleStreamSourceApplication.class, args);
+	}
+
+	public void poll() {
+		source.output().send(MessageBuilder.withPayload("{\"id\":\"99\",\"temperature\":\"123.45\"}").build());
+	}
+}

samples/standalone/stream-source/src/main/resources/application.properties

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+spring.cloud.stream.bindings.output.contentType=application/json

samples/standalone/stream-source/src/test/java/com/example/source/ContractVerifierSampleStreamSourceApplicationTests.java

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+package com.example.source;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest
+public class ContractVerifierSampleStreamSourceApplicationTests {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}

samples/standalone/stream-source/src/test/java/com/example/source/SensorSourceTestBase.java

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+/*
+ * Copyright 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.source;
+
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.cloud.contract.verifier.messaging.boot.AutoConfigureContractVerifierMessaging;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Base class for sensor autogenerated tests (used by Spring Cloud Contract).
+ *
+ * This bootstraps the Spring Boot application code.
+ *
+ * @author Marius Bogoevici
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = ContractVerifierSampleStreamSourceApplication.class, properties="spring.cloud.stream.bindings.output.destination=sensor-data")
+@AutoConfigureContractVerifierMessaging
+public abstract class SensorSourceTestBase {
+
+	@Autowired
+	ContractVerifierSampleStreamSourceApplication application;
+
+	public void createSensorData() {
+		application.poll();
+	}
+}

samples/standalone/stream-source/src/test/resources/contracts/shouldProduceValidSensorData.groovy

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+package contracts
+
+org.springframework.cloud.contract.spec.Contract.make {
+	// Human readable description
+	description 'Should produce valid sensor data'
+	// Label by means of which the output message can be triggered
+	label 'sensor1'
+	// input to the contract
+	input {
+		// the contract will be triggered by a method
+		triggeredBy('createSensorData()')
+	}
+	// output message of the contract
+	outputMessage {
+		// destination to which the output message will be sent
+		sentTo 'sensor-data'
+		headers {
+			header('contentType': 'application/json')
+		}
+		// the body of the output message
+		body ([
+				id: $(consumer(9), producer(regex("[0-9]+"))),
+				temperature: "123.45"
+		])
+	}
+}