JMock初體驗

以下範例為測試 PreMathM.all() 的行為：

1.  呼叫MathM.returnOne()
2. 檢驗return Value == 1
3. 呼叫_mockMathM.echo(3)
4. 檢驗return Value == 3

 
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.Sequence;
import org.jmock.integration.junit4.JMock;
import org.jmock.integration.junit4.JUnit4Mockery;
import org.jmock.lib.legacy.ClassImposteriser;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;


@SuppressWarnings("deprecation")
@RunWith(JMock.class)
public class JMockTest {


 Mockery _context = new JUnit4Mockery(){{
        setImposteriser(ClassImposteriser.INSTANCE);
    }};
 MathM _mockMathM  = _context.mock(MathM.class);

 public class PreMathM{
  MathM _mathm;
  public PreMathM(MathM mathm){
   _mathm = mathm;
  }
  public void all(int echov){
   _mathm.returnOne();
   _mathm.echo(echov);
  }  
 }
 public class MathM {
  public int returnOne() {
   return 1;
  }

  public int echo(int echov) {
   return echov;
  }
 }

 @Before
 public void setUp() throws Exception {
  
 }

 @After
 public void tearDown() throws Exception {
 }

 @Test
 public void testSequenceOneEcho() {
  final Sequence sequenceOneEcho = _context.sequence("sequenceOneEcho");
  _context.checking(new Expectations() {
   {
    atLeast(1).of(_mockMathM).returnOne();
    inSequence(sequenceOneEcho);
    will(returnValue(1));
//    oneOf(_mockMathM).echo(3);
    atLeast(1).of(_mockMathM).echo(3);
    inSequence(sequenceOneEcho);
    will(returnValue(3));
   }
  });
  
  PreMathM mall = new PreMathM(_mockMathM);
  mall.all(3);
 }

}

上述範例中，每次呼叫inSequence(sequenceOneEcho)，都是為了確保每一個行為是【按順序】執行呼叫