复利计算--单元测试

场景分析，期待的返回值以及运行结果如下表：

注释：预期结果0.0，表示输入数据有误。即得不到正确的结果

测试模块	测试输入	预期结果	运行结果	BUG跟踪
复利计算	（100，10，0.03）	134.39	正确
单利计算		130.0
计算前期投入本金		76.92
计算多少年后翻倍	（100，200，0.03）	23.44
计算利率	（100，200，10）	0.073
按年定投		1180.77
按月定投		14169.35
每月还的本息		1.11

package unit;

import static org.junit.Assert.*;

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

import bin.compounding;



public class test {

    @SuppressWarnings("deprecation")
    @Test
    
    public void test() {
        double value1=compounding.test_one(100, 10, 0.03);
        assertEquals(134.39, value1, 0.1);
        
        double value2=compounding.test_two(100, 10, 0.03);
        assertEquals(130.0, value2, 0.1);    
        
        double value3=compounding.test_three(100, 10, 0.03);
        assertEquals(76.92, value3, 0.1);    
        
        double value4=compounding.test_four(100, 200, 0.03);
        assertEquals(23.44, value4, 0.1);    
        
        double value5=compounding.test_five(100, 200, 10);
        assertEquals(0.071, value5, 0.1);
        
        double value6_1=compounding.test_six1(100, 10, 0.03);
        assertEquals(1180.77, value6_1, 0.1);
        
        double value6_2=compounding.test_six2(100, 10, 0.03);
        assertEquals(14169.35, value6_2, 0.1);
        
        double value7=compounding.test_seven(100, 10, 0.03);
        assertEquals(1.11, value7, 0.1);
    }
    
    
    
}      

public static double test_one(double a,int b,double c) {
        double sum=a*Math.pow(1+c, b);
        return sum;
    }
    public static double test_two(double a,int b,double c) {
        double sum=a*c*b;
        return sum+a;
    }
    public static double test_three(double a,int b,double c) {
        double single=a/(1+b*c);
        return single;
    }
    public static double test_four(double a,double b,double c) {
        double years=Math.log(b/a)/Math.log(1+c);
        return years;
    }
    public static double test_five(double a,double b,int c) {
        double r=Math.pow((b/a), 1/c)-1;
        return r;
    }
    public static double test_six1(double a,int b,double c) {
        double sum=a*(1+c)*(-1+Math.pow(1+c, b))/c;
        return sum;
    }
    public static double test_six2(double a,int b,double c) {
        double sum=a*12*(1+c)*(-1+Math.pow(1+c, b))/c;
        return sum;
    }
    public static double test_seven(double a,int b,double c) {
        double sum=a*Math.pow(1+c, b);
        double monthMoney=sum/b/12;
        return monthMoney;
    }