EasyMock - EasyMockSupport
EasyMockSupport es una clase de utilidad o ayuda para clases de prueba. Proporciona las siguientes funcionalidades:
- replayAll() - Registra todos los simulacros creados en un lote.
- verifyAll() - Verifica todas las operaciones simuladas en un lote.
- resetAll() - Restablece todas las operaciones simuladas en un lote.
Ejemplo
Step 1: Create an interface called CalculatorService to provide mathematical functions
Archivo: CalculatorService.java
public interface CalculatorService {
public double add(double input1, double input2);
public double subtract(double input1, double input2);
public double multiply(double input1, double input2);
public double divide(double input1, double input2);
}
Step 2: Create a JAVA class to represent MathApplication
Archivo: MathApplication.java
public class MathApplication {
private CalculatorService calcService;
public void setCalculatorService(CalculatorService calcService){
this.calcService = calcService;
}
public double add(double input1, double input2){
return calcService.add(input1, input2);
}
public double subtract(double input1, double input2){
return calcService.subtract(input1, input2);
}
public double multiply(double input1, double input2){
return calcService.multiply(input1, input2);
}
public double divide(double input1, double input2){
return calcService.divide(input1, input2);
}
}
Step 3: Test the MathApplication class
Probemos la clase MathApplication, inyectando en ella una simulación de calculatorService. Mock será creado por EasyMock.
Archivo: MathApplicationTester.java
import org.easymock.EasyMockRunner;
import org.easymock.EasyMockSupport;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(EasyMockRunner.class)
public class MathApplicationTester extends EasyMockSupport {
private MathApplication mathApplication1;
private MathApplication mathApplication2;
private CalculatorService calcService1;
private CalculatorService calcService2;
@Before
public void setUp(){
mathApplication1 = new MathApplication();
mathApplication2 = new MathApplication();
calcService1 = createNiceMock(CalculatorService.class);
calcService2 = createNiceMock(CalculatorService.class);
mathApplication1.setCalculatorService(calcService1);
mathApplication2.setCalculatorService(calcService2);
}
@Test
public void testCalcService(){
//activate all mocks
replayAll();
//test the add functionality
Assert.assertEquals(mathApplication1.add(20.0, 10.0),0.0,0);
//test the subtract functionality
Assert.assertEquals(mathApplication1.subtract(20.0, 10.0),0.0,0);
//test the multiply functionality
Assert.assertEquals(mathApplication1.divide(20.0, 10.0),0.0,0);
//test the divide functionality
Assert.assertEquals(mathApplication1.multiply(20.0, 10.0),0.0,0);
//test the add functionality
Assert.assertEquals(mathApplication2.add(20.0, 10.0),0.0,0);
//test the subtract functionality
Assert.assertEquals(mathApplication2.subtract(20.0, 10.0),0.0,0);
//test the multiply functionality
Assert.assertEquals(mathApplication2.divide(20.0, 10.0),0.0,0);
//test the divide functionality
Assert.assertEquals(mathApplication2.multiply(20.0, 10.0),0.0,0);
//verify all the mocks
verifyAll();
}
}
Step 4: Execute test cases
Cree un archivo de clase java llamado TestRunner en C:\> EasyMock_WORKSPACE para ejecutar casos de prueba.
Archivo: TestRunner.java
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
public class TestRunner {
public static void main(String[] args) {
Result result = JUnitCore.runClasses(MathApplicationTester.class);
for (Failure failure : result.getFailures()) {
System.out.println(failure.toString());
}
System.out.println(result.wasSuccessful());
}
}
Step 5: Verify the Result
Compile las clases usando el compilador javac de la siguiente manera:
C:\EasyMock_WORKSPACE>javac MathApplicationTester.java
Ahora ejecute Test Runner para ver el resultado:
C:\EasyMock_WORKSPACE>java TestRunner
Verifique la salida.
true