UtilTest.java

/*
 * Copyright (c) 2013, SRI International
 * All rights reserved.
 * Licensed under the The BSD 3-Clause License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 * 
 * http://opensource.org/licenses/BSD-3-Clause
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 * modification, are permitted provided that the following conditions
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 * Redistributions of source code must retain the above copyright
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 * Redistributions in binary form must reproduce the above copyright
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 * documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the aic-util nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package com.sri.ai.test.util;

import org.junit.Assert;
import org.junit.Test;

import com.sri.ai.util.Util;

public class UtilTest {

	@Test
	public void testCastOrThrowError() {
		Integer i = 10;
		Object iObject = i;
		Integer j = Util.castOrThrowError(Integer.class, iObject, "Got %s, which should have been an instance of %s but is instead an instance of %s");
		Assert.assertEquals(i, j);

		try {
			Util.castOrThrowError(String.class, iObject, "Got %s, which should have been an instance of %s but is instead an instance of %s");
		} catch (Error e) {
			Assert.assertEquals("Got 10, which should have been an instance of String but is instead an instance of Integer", e.getMessage());
			return;
		}
		
		Assert.fail("Util.castOrThrowError should have throw error when attempting to cast Integer into String but did not.");
	}
}