1、手动测试：

2、代码测试：

1 package invest; 2  3 import static org.junit.Assert.*; 4 import static org.hamcrest.CoreMatchers.*; 5 import org.junit.Test; 6  7 public class CompundingTest { 8  9     10     11     @Test12     public void testCompunding() {13         double F=Compunding.compunding(50000, 0.05, 10,1);14         assertThat(F, is(81444.7313388721));15     }16 17     @Test18     public void testSimple_interest() {19         double F=Compunding.simple_interest(50000, 0.05, 10);20         assertThat(F, is(75000.0));21     }22 23     @Test24     public void testCount_Deposit() {25         double P=Compunding.Deposit(50000, 0.05, 10,1);26         assertThat(P, is(30695.66267703796));27     }28 29     30     31     @Test32     public void testCount_invest() {33         double F=Compunding.invest(10000, 0.1, 10,1);34         assertThat(F, is(175311.67061100024));35     }36     37     @Test38     public void testCount_refunt() {39         double P1=Compunding.year_refunt(1000000,0.09, 20);40         //double P2=Compunding.month_refunt(1000000,0.09, 20);41         assertThat(P1, is(98100.0000));42         //assertThat(P2, is(7556.2500));43     }44 45 }