INT-1188, moved to the sandbox for further investigation.

spring-integration-core/src/test/java/org/springframework/integration/core/TimeBasedUUIDGeneratorTests.java

@@ -1,106 +0,0 @@
-/*
- * Copyright 2002-2010 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.integration.core;
-
-import java.util.UUID;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.springframework.util.StopWatch;
-
-/**
- * @author Oleg Zhurakousky
- *
- */
-public class TimeBasedUUIDGeneratorTests {
-
-	@Test
-	public void testGreaterThen(){
-
-		UUID id = TimeBasedUUIDGenerator.generateId();
-		for (int i = 0; i < 1000; i++) {
-			UUID newId = TimeBasedUUIDGenerator.generateId();
-			//System.out.println(newId);
-			// tests, that newly created UUID is always greater then the previous one.
-			Assert.assertTrue(newId.compareTo(id) == 1);
-			id = newId;
-		}
-	}
-	@Test
-	public void testUniqueness(){
-		long timestamp = System.currentTimeMillis();
-		UUID id = TimeBasedUUIDGenerator.generateIdFromTimestamp(timestamp);
-		for (int i = 0; i < 1000; i++) {
-			UUID newId = TimeBasedUUIDGenerator.generateIdFromTimestamp(timestamp);
-			// tests, that newly created UUID is always greater then the previous one.
-			Assert.assertTrue(newId.compareTo(id) == 1);
-			id = newId;
-		}
-	}
-	@Test
-	public void performanceTestSynch(){
-		StopWatch stopWatch = new StopWatch();
-		stopWatch.start();
-		for (int i = 0; i < 10000; i++) {
-			TimeBasedUUIDGenerator.generateId();
-		}
-		stopWatch.stop();
-		System.out.println("Generated 10000 UUID (sync) via TimeBasedUUIDGenerator.generateId(): in " + stopWatch.getTotalTimeSeconds() + " seconds");
-		
-		stopWatch = new StopWatch();
-		stopWatch.start();
-		for (int i = 0; i < 10000; i++) {
-			UUID.randomUUID();
-		}
-		stopWatch.stop();
-		System.out.println("Generated 10000 UUID  (sync) via UUID.randomUUID(): in " + stopWatch.getTotalTimeSeconds() + " seconds");
-	}
-	@Test
-	public void performanceTestAsynch() throws Exception {
-		ExecutorService executor = Executors.newFixedThreadPool(1);
-		StopWatch stopWatch = new StopWatch();
-		stopWatch.start();
-		for (int i = 0; i < 10000; i++) {
-			executor.execute(new Runnable() {
-				public void run() {
-					TimeBasedUUIDGenerator.generateId();
-				}
-			});
-		}
-		executor.shutdown();
-		executor.awaitTermination(10, TimeUnit.SECONDS);
-		stopWatch.stop();
-		System.out.println("Generated 10000 UUID (async) via TimeBasedUUIDGenerator.generateId(): in " + stopWatch.getTotalTimeSeconds() + " seconds");
-		
-		executor = Executors.newFixedThreadPool(1);
-		stopWatch = new StopWatch();
-		stopWatch.start();
-		for (int i = 0; i < 10000; i++) {
-			executor.execute(new Runnable() {
-				public void run() {
-					UUID.randomUUID();
-				}
-			});
-		}
-		executor.shutdown();
-		executor.awaitTermination(10, TimeUnit.SECONDS);
-		stopWatch.stop();
-		System.out.println("Generated 10000 UUID (async) via UUID.randomUUID(): in " + stopWatch.getTotalTimeSeconds() + " seconds");
-	}
-}