Mockito使用

import static org.mockito.Mockito.*;

/**
* Created by Administrator on 2015/12/30.
*/
public class MockTest {

protected static final Logger logger = Logger.getLogger(MockTest.class);
//@Test
public void easyMockTest() {
List list = EasyMock.createMock(List.class);
// 录制过程

// 期望方法list.set(0,1)执行2次，返回null，不抛出异常
expect1:
EasyMock.expect(list.set(0, 1)).andReturn(null).times(2);
// 期望方法list.set(0,1)执行1次，返回null，不抛出异常
expect2:
EasyMock.expect(list.set(0, 1)).andReturn(1);

// 执行测试代码
EasyMock.replay(list);
// 执行list.set(0,1)，匹配expect1期望，会返回null
Assert.assertNull(list.set(0, 1));
// 执行list.set(0,1)，匹配expect1（因为expect1期望执行此方法2次），会返回null
Assert.assertNull(list.set(0, 1));
// 执行list.set(0,1)，匹配expect2，会返回1
Assert.assertEquals(1, list.set(0, 1));

// 验证期望
EasyMock.verify(list);

Integer i1 = 100;
Integer i2 = 100;

if (i1 == i2)
System.out.println("i1 and i2 is equal");
else
System.out.println("i1 and i2 is not equal ");

byte a = 127;
byte b = 127;
byte c = 0;
c = (byte) (b + a);
System.out.println(c); // error : cannot convert from int to byte
b += a; // ok
System.out.println(b);

System.out.println(3 * 0.1);
}

@Test
public void mockitoTest() {
//也可以Mock具体的类，而不仅仅是接口
LinkedList mockedList = mock(LinkedList.class);

//Stub
when(mockedList.get(0)).thenReturn("first"); // 设置返回值
when(mockedList.get(1)).thenThrow(new RuntimeException()); // 抛出异常

//第一个会打印 "first"
System.out.println(mockedList.get(0));

//接下来会抛出runtime异常
System.out.println(mockedList.get(1));

//接下来会打印"null",这是因为没有stub get(999)
System.out.println(mockedList.get(999));

// 可以选择性地验证行为，比如只关心是否调用过get(0)，而不关心是否调用过get(1)
verify(mockedList).get(0);

}

@Rule
public ExpectedException thrown = ExpectedException.none();

@Test
public void exceptionTest() {
thrown.expect(RuntimeException.class);
thrown.expectMessage("Runtime exception occurred");
throw new RuntimeException("Runtime exception occurred");
}