Mockito - Vérification commandée
Mockito fournit la classe Inorder qui s'occupe de l'ordre des appels de méthode que le simulacre va faire au cours de son action.
Syntaxe
//create an inOrder verifier for a single mock
InOrder inOrder = inOrder(calcService);
//following will make sure that add is first called then subtract is called.
inOrder.verify(calcService).add(20.0,10.0);
inOrder.verify(calcService).subtract(20.0,10.0); 
    Exemple
Step 1 − Create an interface called CalculatorService to provide mathematical functions
File: 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
File: 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 Mockito.
Ici, nous avons ajouté deux appels de méthode fictive, add () et soustract (), à l'objet fictif via when (). Cependant, lors des tests, nous avons appelé soustract () avant d'appeler add (). Lorsque nous créons un objet fictif à l'aide de Mockito, l'ordre d'exécution de la méthode n'a pas d'importance. En utilisant la classe InOrder, nous pouvons garantir l'ordre des appels.
File: MathApplicationTester.java
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.inOrder;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InOrder;
import org.mockito.runners.MockitoJUnitRunner;
// @RunWith attaches a runner with the test class to initialize the test data
@RunWith(MockitoJUnitRunner.class)
public class MathApplicationTester {
	
   private MathApplication mathApplication;
   private CalculatorService calcService;
   @Before
   public void setUp(){
      mathApplication = new MathApplication();
      calcService = mock(CalculatorService.class);
      mathApplication.setCalculatorService(calcService);
   }
   @Test
   public void testAddAndSubtract(){
      //add the behavior to add numbers
      when(calcService.add(20.0,10.0)).thenReturn(30.0);
      //subtract the behavior to subtract numbers
      when(calcService.subtract(20.0,10.0)).thenReturn(10.0);
      //test the add functionality
      Assert.assertEquals(mathApplication.add(20.0, 10.0),30.0,0);
      //test the subtract functionality
      Assert.assertEquals(mathApplication.subtract(20.0, 10.0),10.0,0);
      //create an inOrder verifier for a single mock
      InOrder inOrder = inOrder(calcService);
      //following will make sure that add is first called then subtract is called.
      inOrder.verify(calcService).subtract(20.0,10.0);
      inOrder.verify(calcService).add(20.0,10.0);
   }
} 
    Step 4 − Execute test cases
Créez un fichier de classe Java nommé TestRunner dans C:\> Mockito_WORKSPACE pour exécuter des cas de test.
File: 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 en utilisant javac compilateur comme suit -
C:\Mockito_WORKSPACE>javac CalculatorService.java MathApplication.
   java MathApplicationTester.java TestRunner.java 
    Maintenant, lancez le Test Runner pour voir le résultat -
C:\Mockito_WORKSPACE>java TestRunner 
    Vérifiez la sortie.
testAddAndSubtract(MathApplicationTester): 
Verification in order failure
Wanted but not invoked:
calculatorService.add(20.0, 10.0);
-> at MathApplicationTester.testAddAndSubtract(MathApplicationTester.java:48)
Wanted anywhere AFTER following interaction:
calculatorService.subtract(20.0, 10.0);
-> at MathApplication.subtract(MathApplication.java:13)
false