我如何模拟在类级别实例化的变量..我想模拟GenUser,UserData。我该怎么做......
我有以下课程
public class Source {
private GenUser v1 = new GenUser();
private UserData v2 = new UserData();
private DataAccess v3 = new DataAccess();
public String createUser(User u) {
return v1.persistUser(u).toString();
}
}
我如何模仿我的v1就像这样
GenUser gu=Mockito.mock(GenUser.class);
PowerMockito.whenNew(GenUser.class).withNoArguments().thenReturn(gu);
我为单元测试和模拟编写的是
@Test
public void testCreateUser() {
Source scr = new Source();
//here i have mocked persistUser method
PowerMockito.when(v1.persistUser(Matchers.any(User.class))).thenReturn("value");
final String s = scr.createUser(new User());
Assert.assertEquals("value", s);
}
即使我已经模仿了GenUser v1的persistUser方法,那么它也没有返回“Value”作为我的返回值。
感谢adavanced .......:D
答案 0 :(得分:2)
看看https://code.google.com/p/mockito/wiki/MockingObjectCreation - 有一些想法可以帮到你。
答案 1 :(得分:2)
与fge的评论一样:
所有用法都需要在班级注释
@RunWith(PowerMockRunner.class)
和@PrepareForTest
。
确保您正在使用该测试运行器,并且已将@PrepareForTest(GenUser.class)
放在测试类上。
(资料来源:https://code.google.com/p/powermock/wiki/MockitoUsage13)
答案 2 :(得分:0)
我不知道mockito,但如果您不介意使用PowerMock和EasyMock,以下方法可行。
@Test
public void testCreateUser() {
try {
User u = new User();
String value = "value";
// setup the mock v1 for use
GenUser v1 = createMock(GenUser.class);
expect(v1.persistUser(u)).andReturn(value);
replay(v1);
Source src = new Source();
// Whitebox is a really handy part of PowerMock that allows you to
// to set private fields of a class.
Whitebox.setInternalState(src, "v1", v1);
assertEquals(value, src.createUser(u));
} catch (Exception e) {
// if for some reason, you get an exception, you want the test to fail
e.printStackTrack();
assertTrue(false);
}
}