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 );
}

}