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BigDecimalTest.java
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BigDecimalTest.java
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/**
* Copyright (C) 2012 - 2013 Xeiam LLC http://xeiam.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 com.xeiam.xchange.utils;
import static org.fest.assertions.api.Assertions.assertThat;
import java.math.BigDecimal;
import org.junit.Test;
/**
* Tests various BigMoney and BigDecimal behavior
*/
public class BigDecimalTest {
@Test
public void test() {
int BTC_VOLUME_AND_AMOUNT_INT_2_DECIMAL_FACTOR = 100000000;
long amount_int = 23385868;
// FYI DO NOT divide like this
BigDecimal testAmount = new BigDecimal((double) amount_int / BTC_VOLUME_AND_AMOUNT_INT_2_DECIMAL_FACTOR);
assertThat(testAmount.toPlainString()).isEqualTo("0.2338586800000000132104815975253586657345294952392578125");
// FYI DO divide like this
BigDecimal testAmount2 = new BigDecimal(amount_int).divide(new BigDecimal(BTC_VOLUME_AND_AMOUNT_INT_2_DECIMAL_FACTOR));
assertThat(testAmount2.toPlainString()).isEqualTo("0.23385868");
}
}