英文:
Error mocking @Inject classes JUnit Mockito
问题
以下是您要翻译的内容：
我在使用JUnit和Mockito时遇到了一些问题。首先，我会提供我拥有的所有信息。
JWTValidator.java
@Inject
JWTUtils jwtUtils;
public void validateJWT(String jwt) { // 主要函数返回true、false或异常
[...]
Claims claims = jwtUtils.getClaims(jwt); // 这里claims = null！
[...]
}
JWTUtils.java
public void getClaims(jwt) { // 这应该返回一个带有我在JWTTestServlet.java中使用的JWT的异常
[...]
}
JWTTestServlet.java
@InjectMocks
private JWTValidator jwtValidator;
@Mock
private JWTUtils jwtUtils;
@Before
public void setup() throws Exception {
MockitoAnnotations.initMocks(this);
}
@Test(expected=Exception.class)
public void testJWTWithoutGUID() {
final String jwt = ""; // 一些JWT
String message = "";
try {
jwtValidator.validateJWT(jwt);
} catch (Exception e) {
message = e.getMessage();
System.out.println(message);
}
assertTrue(message.contains(MSG_WITHOUT_GUID));
}
问题是，当我调用JWTUtils的getClaims函数时，它不起作用，我收到一个空字段。
我尝试过许多不同的注释，但也没有起作用。JWTUtils要么为空，要么该函数返回空。
我可以调试JWTValidator，但无法调试JWTUtils。
您能帮助我吗？
非常感谢
最好的问候
英文:
I'm having some troubles using JUnit with Mockito. First of all I give you all the info that I have.
JWTValidator.java
@Inject
JWTUtils jwtUtils;
public void validateJWT(String jwt) { //The main function returns true, false or an exception
[...]
Claims claims = jwtUtils.getClaims(jwt); //claims = null here!
[...]
}
JWTUtils.java
public void getClaims(jwt) { //This should return an Exception with the JWT that I use on the JWTTestServlet.java
[...]
}
JWTTestServlet.java
@InjectMocks
private JWTValidator jwtValidator;
@Mock
private JWTUtils jwtUtils;
@Before
public void setup() throws Exception {
MockitoAnnotations.initMocks(this);
}
@Test(expected=Exception.class)
public void testJWTWithoutGUID() {
final String jwt = ""; //Some JWT
String message = "";
try {
jwtValidator.validateJWT(jwt);
} catch (Exception e) {
message = e.getMessage();
System.out.println(message);
}
assertTrue(message.contains(MSG_WITHOUT_GUID));
}
The point is when I call the getClaims function of JWTUtils, it doesn't work, I receive a null field.
I've tried with many different annotations but it doesn't work either. JWTUtils is null or the function returns a null.
I can debug JWTValidator but I can't debug JWTUtils.
Can you please help me?
Thank you so much
Best regards
答案1
得分: 1
解决！
解决方法是我必须定义模拟类（JWTUtils）的行为
when(jwtUtils.getJWTClaims(jwt)).thenReturn(new DefaultClaims());
现在当我调用这个函数时，我就不会得到一个空对象了。
非常感谢！
英文:
Solved!
The solution was that I have to define the behaviour of the mocked class (JWTUtils)
when(jwtUtils.getJWTClaims(jwt)).thenReturn(new DefaultClaims());
Now when I call this function I don't have a null object.
Thank you very much!
答案2
得分: -2
默认情况下，模拟对象的所有方法都返回“未初始化”或“空”值，例如，对于数值类型（包括原始类型和包装类型），返回零；对于布尔值，返回false；对于大多数其他类型，返回null。
我认为你需要的不是一个Mock对象，而是一个Spy对象：https://stackoverflow.com/questions/15976008/using-mockito-to-stub-and-execute-methods-for-testing
英文:
By default, all methods of a mock return “uninitialized” or “empty” values, e.g., zeros for numeric types (both primitive and boxed), false for booleans, and nulls for most other types.
I think what you need is not a Mock but a Spy: https://stackoverflow.com/questions/15976008/using-mockito-to-stub-and-execute-methods-for-testing
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