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我第一次使用JUnit。不知道該怎麼辦 始終未能得到第17行 有1次失敗： 1）testBigRealNumberSum（BigRealNumberUtilityTest） java.lang.AssertionError：預期：< 1>卻被：java.lang.AssertionError：expected：<1>但是：<BigRealNumber @ 67424e82>
FAILURES！ 試驗運行：1，失敗：1
import org.junit.Assert;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
public class BigRealNumberUtilityTest {
@Test
public void testBigRealNumberSum(){
BigRealNumber test1 = new BigRealNumber("5");
BigRealNumber test2 = new BigRealNumber("4");
BigRealNumber result = BigRealNumberUtility.subtract(test1,test2);
Assert.assertEquals("1", result);
}
}
/*
*這個類是用於 * BigRealNumber類的實例的工具類。它包含用於BigRealNumber類實例的算術運算 *的方法。 **/
公共類BigRealNumberUtility {
/*
*This method computes for the sum of an array of BigRealNumber instances.
*
*@param numbers This is an array of big decimal real numbers.
*@return realNum This is the BigRealNumber value used to represent the sum of all
*the instances of the BigRealNumber class in the method parameter.
**/
公共靜態BigRealNumber總和（BigRealNumber ...數字）{ 雙總和= 0;
for(int i = 0; i < numbers.length; i++){
sum = sum + numbers[i].decimalValue;
}
String s = Double.toString(sum);
BigRealNumber realNum = new BigRealNumber(s);
return realNum;
}
/*
*This method computes for the difference of two BigRealNumber instances
*used in its parameter.
*
*@param n1 This is the minuend used in the calculation
*@param n2 This is the subtrahend used in the calculation
*
*@return realNum This is the BigRealNumber value used to represent
*the calculated difference between the decimal values used in the method.
**/
公共靜態BigRealNumber減法（BigRealNumber N1，N2 BigRealNumber）{ 雙差= n1.decimalValue - n2.decimalValue;
String s = Double.toString(difference);
BigRealNumber realNum = new BigRealNumber(s);
return realNum;
}
/* *此方法計算兩個BigRealNumber實例的產物。 * * @ param n1這是一個因子，用於計算兩個十進制小數的乘積*實數。 * @ param n2這是一個因子，用於計算兩個十進制小數的乘積*實數。 * * @ return realNum這是在方法中使用的十進制值之間計算的產品 *的BigRealNumber表示形式。 **/ public static BigRealNumber product（BigRealNumber n1，BigRealNumber n2）{ double product = n1.decimalValue * n2.decimalValue;
String s = Double.toString(product);
BigRealNumber realNum = new BigRealNumber(s);
return realNum;
}}