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April 21, 2013 23:52
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UNTreF - Ejemplo de Pruebas: Clase Calculadora, método contarDivisores()
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package ar.edu.untref.pruebas; | |
public class Calculadora { | |
public int contarDivisores(int numero) { | |
if (numero <= 0) { | |
Error numeroNoValido = | |
new Error("El número debe ser mayor a cero"); | |
throw numeroNoValido; | |
} | |
int divisores = 0; | |
for (int i = numero; i >= 1; i--) { | |
if (numero%i == 0) { | |
divisores++; | |
} | |
} | |
return divisores; | |
} | |
} |
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package ar.edu.untref.pruebas; | |
import org.junit.Assert; | |
import org.junit.Test; | |
public class CalculadoraTests { | |
@Test(expected=Error.class) | |
public void testQueContarDivisoresNoAdmiteNegativos() { | |
Calculadora miCalculadora = new Calculadora(); | |
miCalculadora.contarDivisores(-1); | |
} | |
@Test(expected=Error.class) | |
public void testQueContarDivisoresNoAdmiteCero() { | |
Calculadora miCalculadora = new Calculadora(); | |
miCalculadora.contarDivisores(0); | |
} | |
@Test | |
public void testQueContarDivisoresParaUnoEsUno() { | |
Calculadora miCalculadora = new Calculadora(); | |
int cantidadDivisores = miCalculadora.contarDivisores(1); | |
Assert.assertEquals("Los divisores de 1 son [1]", 1, cantidadDivisores); | |
} | |
@Test | |
public void testQueContarDivisoresParaDosEsDos() { | |
Calculadora miCalculadora = new Calculadora(); | |
int cantidadDivisores = miCalculadora.contarDivisores(2); | |
Assert.assertEquals("Los divisores de 2 son [2, 1]", 2, cantidadDivisores); | |
} | |
@Test | |
public void testQueContarDivisoresParaNueveEsTres() { | |
Calculadora miCalculadora = new Calculadora(); | |
int cantidadDivisores = miCalculadora.contarDivisores(9); | |
Assert.assertEquals("Los divisores de 9 son [9, 3, 1]", 3, cantidadDivisores); | |
} | |
} |
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