EasyMock - EasyMockSupport

EasyMockSupport est un utilitaire ou une classe d'assistance pour les classes de test. Il fournit les fonctionnalités suivantes:

• replayAll() - Enregistre tous les simulacres créés dans un lot.
• verifyAll() - Vérifie toutes les opérations simulées en un seul lot.
• resetAll() - Réinitialise toutes les opérations simulées en un seul lot.

Exemple

Step 1: Create an interface called CalculatorService to provide mathematical functions

Fichier: 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

Fichier: 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

Testons la classe MathApplication, en y injectant un simulacre de calculatorService. Mock sera créé par EasyMock.

Fichier: 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

Créez un fichier de classe Java nommé TestRunner dans C:\> EasyMock_WORKSPACE pour exécuter des cas de test.

Fichier: 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

Compilez les classes à l'aide du compilateur javac comme suit:

C:\EasyMock_WORKSPACE>javac MathApplicationTester.java

Maintenant, exécutez le Test Runner pour voir le résultat:

C:\EasyMock_WORKSPACE>java TestRunner

Vérifiez la sortie.

true