AmiToolsVersionTest.java

/*
 * Copyright 2008-2012 Amazon Technologies, Inc. 
 *
 * 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://aws.amazon.com/apache2.0
 *
 * This file 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.amazonaws.eclipse.ec2;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.junit.Test;


/**
 * Unit tests for the AmiToolsVersion class.
 */
public class AmiToolsVersionTest {
	
	/**
	 * Tests that known version numbers are parsed correctly. 
	 */
	@Test
	public void testParsing() throws Exception {
		AmiToolsVersion version = new AmiToolsVersion("1.3-123456");
		assertEquals(1, version.getMajorVersion());
		assertEquals(3, version.getMinorVersion());
		assertEquals(123456, version.getPatch());
		
		version = new AmiToolsVersion("1.3-20041 20071010\n");
		assertEquals(1, version.getMajorVersion());
		assertEquals(3, version.getMinorVersion());
		assertEquals(20041, version.getPatch());
	}

	/**
	 * Tests that a version number with non-numeric components will correctly
	 * cause a ParseException to be thrown.
	 */
	@Test(expected = java.text.ParseException.class)
	public void testParseExceptionNonNumeric() throws Exception {
		new AmiToolsVersion("1.X-12345");
	}

	/**
	 * Tests that a version number in the wrong format will correctly cause a
	 * ParseException to be thrown.
	 */
	@Test(expected = java.text.ParseException.class)
	public void testParseExceptionWrongFormat() throws Exception {
		new AmiToolsVersion("1.2.3.45");
	}

	/**
	 * Tests that the isGreaterThan method correctly compares versions with each
	 * other.
	 */
	@Test
	public void testIsGreaterThan() throws Exception {
		AmiToolsVersion a = new AmiToolsVersion("1.0-99999999");
		AmiToolsVersion b = new AmiToolsVersion("1.3-99999999");
		AmiToolsVersion c = new AmiToolsVersion("2.0-1");
		
		assertTrue(c.isGreaterThan(b));
		assertTrue(b.isGreaterThan(a));
		
		assertFalse(a.isGreaterThan(b));
		assertFalse(b.isGreaterThan(c));
	}
	
}