OpenShiftContextTest.java

/*******************************************************************************
 * Copyright (c) 2015 Red Hat, Inc. Distributed under license by Red Hat, Inc.
 * All rights reserved. This program is made available under the terms of the
 * Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: Red Hat, Inc.
 ******************************************************************************/
package com.openshift.restclient;

import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotSame;
import static junit.framework.Assert.assertNull;

import org.junit.After;
import org.junit.Test;

/**
 * 
 * @author Fred Bricon
 *
 */
public class OpenShiftContextTest {

	@After
	public void tearDown() {
		OpenShiftContext.get().clear();
	}
	
	@Test
	public void testGetValue() {
		String value = "bar";
		OpenShiftContext.get().put("foo", value);
		assertEquals(value, OpenShiftContext.get().get("foo"));
	}
	
	@Test
	public void testRemove() {
		OpenShiftContext.get().put("foo", "bar");
		OpenShiftContext.get().remove("foo");
		assertNull(OpenShiftContext.get().get("foo"));
	}
	
	@Test
	public void testClear() {
		OpenShiftContext.get().put("foo", "bar");
		OpenShiftContext.get().clear();
		assertNull(OpenShiftContext.get().get("foo"));
	}
	
	@Test
	public void testConcurrency() throws Exception {
		OpenShiftContext[] contexts = new OpenShiftContext[2];
		Thread t0 = new SomeThread(0, contexts);
		Thread t1 = new SomeThread(1, contexts);
		
		t0.start();
		t1.start();		
		t0.join();
		t1.join();
		
		assertNotSame(contexts[0], contexts[1]);
		assertEquals(t0.getName(), contexts[0].get("foo"));
		assertEquals(t1.getName(), contexts[1].get("foo"));
	}
	
	static class SomeThread extends Thread {
		
		private int index;
		private OpenShiftContext[] contexts;

		SomeThread(int index, OpenShiftContext[] contexts) {
			super("Thread-"+index);
			this.index = index;
			this.contexts = contexts;
		}
		
		public void run() {
			assertNull(OpenShiftContext.get().get("foo"));
			OpenShiftContext.get().put("foo", getName());
			contexts[index] = OpenShiftContext.get();
		};
	}
}