BigDecimalMathLibraryTest.java

/*
 * Copyright (c) 2009-2015
 * IT-Consulting Stephan Schloepke (http://www.schloepke.de/)
 * klemm software consulting Mirko Klemm (http://www.klemm-scs.com/)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.jbasics.math;

import static org.junit.Assert.*;
import org.junit.Test;

import java.math.BigDecimal;
import java.math.MathContext;

/**
 * Created by stephan on 01.09.16.
 */
public class BigDecimalMathLibraryTest {

	@Test
	public void testPow() {
		MathContext mc = MathContext.DECIMAL64;
		assertEquals(BigDecimal.ONE, BigDecimalMathLibrary.pow(BigDecimal.ZERO, BigDecimal.ZERO).valueToPrecision(mc));
		assertEquals(BigDecimal.ZERO, BigDecimalMathLibrary.pow(BigDecimal.ZERO, BigDecimal.ONE).valueToPrecision(mc));
		try {
			assertEquals(BigDecimal.ZERO, BigDecimalMathLibrary.pow(BigDecimalMathLibrary.CONSTANT_MINUS_ONE, BigDecimal.ONE).valueToPrecision(mc));
			fail("Negativ base should result in exception");
		} catch(ArithmeticException e) {
			// good
		}
	}

}