Include test logic and configuration to terminate a (forked) Spring application so it does not run indefinitely.

spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/integration/SpringApplicationTerminatingIntegrationTests.java

@@ -0,0 +1,112 @@
+/*
+ *  Copyright 2019 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 org.springframework.data.gemfire.tests.integration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.IOException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Scanner;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.Profile;
+import org.springframework.data.gemfire.tests.process.ProcessWrapper;
+
+/**
+ * Integration Tests testing and asserting Spring Application termination configuration.
+ *
+ * @author John Blum
+ * @see java.time.Duration
+ * @see java.time.Instant
+ * @see org.junit.Test
+ * @see org.springframework.context.annotation.AnnotationConfigApplicationContext
+ * @see org.springframework.context.annotation.Bean
+ * @see org.springframework.context.annotation.Configuration
+ * @see org.springframework.context.annotation.Import
+ * @see org.springframework.context.annotation.Profile
+ * @see org.springframework.data.gemfire.tests.process.ProcessWrapper
+ * @since 0.0.24
+ */
+@SuppressWarnings("unused")
+public class SpringApplicationTerminatingIntegrationTests extends ForkingClientServerIntegrationTestsSupport {
+
+	private static Instant startTime;
+
+	private static ProcessWrapper springApplicationProcess;
+
+	@BeforeClass
+	public static void startSpringApplication() throws IOException {
+
+		springApplicationProcess = run(TestSpringApplicationConfiguration.class,
+			"-Dspring.profiles.active=SpringApplicationTerminator");
+
+		startTime = Instant.now();
+	}
+
+	@AfterClass
+	public static void assertSpringApplicationTerminated() {
+
+		Condition springApplicationTerminatedCondition = () -> springApplicationProcess.isNotRunning();
+
+		waitOn(springApplicationTerminatedCondition, Duration.ofSeconds(10L).toMillis());
+
+		assertThat(Duration.between(startTime, Instant.now())).isGreaterThan(Duration.ofSeconds(5));
+	}
+
+	@Test
+	public void springApplicationIsRunning() {
+
+		assertThat(springApplicationProcess).isNotNull();
+		assertThat(springApplicationProcess.isAlive()).isTrue();
+		assertThat(springApplicationProcess.isRunning()).isTrue();
+	}
+
+	@Configuration
+	@Profile("SpringApplicationTerminator")
+	@Import(SpringApplicationTerminatorConfiguration.class)
+	static class TestSpringApplicationConfiguration {
+
+		public static void main(String[] args) {
+
+			AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();
+
+			applicationContext.register(TestSpringApplicationConfiguration.class);
+			applicationContext.registerShutdownHook();
+
+			new Scanner(System.in).nextLine();
+		}
+
+		@Bean
+		SpringApplicationTerminatorConfigurer terminatorConfigurer() {
+
+			return new SpringApplicationTerminatorConfigurer() {
+
+				@Override
+				public Duration delay() {
+					return Duration.ofSeconds(5);
+				}
+			};
+		}
+	}
+}