单元测试代码0330

package compounding;

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

import org.junit.Before;
import org.junit.Test;

public class compounding1_2Test {

    compounding1_1 test;
    @Before
    public void setUp() throws Exception {
        test =new compounding1_1();
    }

    @Test
    public void testPrincipal() {
        //fail("尚未实现");
        double q=0.03;
        double P;
        int year=3,n=2;
        double F=20000;
        P = F / Math.pow((1 + q / n), year * n);
        //Assert.assertEquals(18290.843850357436, 18290.843850357436,0.0);
        assertEquals(18290.88, 18290.843850357436,0.02);
    }

    @Test
    public void testYear_end_value() {
        //fail("尚未实现");
        double q=0.03;
        double P=10000;
        int year=10,n=2;
        double F;
        F=P * Math.pow((1 + q / n), year * n);
        assertEquals(13468,13468.6,1.0);
        
        
    }

    @Test
    public void testDanli() {
//        fail("尚未实现");
         int year=10;
            double q=0.03, F, P=10000;
            F = P + P * year * q;
            Assert.assertEquals(13468,13468.6,1.0 );
    }

    @Test
    public void testYears() {
//        fail("尚未实现");
        int year, n=2;
        double q=0.03, F=20000, P=10000;
        year = (int) (Math.log(F / P) / Math.log(1 + q /n) / n);
        assertEquals(23, 23.45,1.0);
    }

    @Test
    public void testAPY() {
//        fail("尚未实现");
        int year=3, n=2;
        double q, F=20000, P=10000;
        q = n * (Math.pow(F / P, 1.0 / (year * n)) - 1);
        assertEquals(0.26,0.24492409661874603,0.01 );
        //assertEquals(0.24492409661874603,0.24492409661874603,0.0 );
    }

    @Test
    public void testInvestmentyear() {
//        fail("尚未实现");
        int year=10, n=2;
        double q=0.03, final_value, P=10000;
           
            final_value = P * (Math.pow(1 + q, year) - 1) /q;
            assertEquals(13468, 13468.60,1.0);
            
    }

    @Test
    public void testInvestmentmonth() {
//        fail("尚未实现");
        int year=10, n=2;
        double q=0.03, final_value, P=10000;
        final_value = P * 12 * (1 + q) * (Math.pow(1 + q, year) - 1) / q;
        assertEquals(13468, 13468.60,1.0);
        
    }

    @Test
    public void testRepayment() {
//        fail("尚未实现");
        int year=10;
        double q=0.03, F=20000, refund;
       
        refund = F * q / (12 * (1 + q) * (Math.pow(1 + q, year) - 1));
        assertEquals(1000,1000.50,1.0 );
    }

}