Circulo

    Circulo
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package figura.circulo;

public class Circulo {
   
    double radio; double pi = 3.1416;
   
    public Circulo(double dato1){
        radio = dato1;
    }
    public double area(){
        return pi * (Math.pow(radio, 2));
    }
    public double perimetro(){
        return ((2*radio)*(pi));
    }
    public double obtenerRadio(){
        return radio;
    }
    public void modificarRadio(double dato1){
        radio = dato1;
    }
   
}
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package Pruebas;

import figura.circulo.Circulo;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;

public class CirculoTest {
   
    static Circulo circulo;
   
    public CirculoTest() {
    }
   
   @BeforeClass
    public static void setUpClass() throws Exception {
        circulo = new Circulo(5.0);
    }
   
    @AfterClass
    public static void tearDownClass() throws Exception {
    }
   
    @Before
    public void setUp() {
    }
   
    @After
    public void tearDown() {
    }
    // TODO add test methods here.
    // The methods must be annotated with annotation @Test. For example:
    //
    // @Test
    // public void hello() {}
   
    @Test public void areaTest(){
        assertEquals(circulo.area(),78.53999999999999,0);
    }
    @Test public void perimetroTest(){
    assertEquals(circulo.perimetro(),31.416,0);
    }
    @Test public void obtenerLadosTest(){
        assertEquals(circulo.obtenerRadio(),5,0);
    }
    @Test public void modificarLadosTest(){
        circulo.modificarRadio(6.0);
        assertEquals(circulo.obtenerRadio(),6,0);
    }
    @Test public void nuevoTest(){
        System.out.println(circulo.obtenerRadio());
    }
   
}