java - Mock Spring 的 MessageSource.getMessage 方法

Question

我试图模拟 Spring 的 MessageSource.getMessage方法但是 Mockito它提示一条无用的消息，我正在使用:

when(mockMessageSource.getMessage(anyString(), any(Object[].class), any(Locale.class)))
    .thenReturn(anyString());

错误信息是:

You cannot use argument matchers outside of verification or stubbing.
Examples of correct usage of argument matchers:

when(mock.get(anyInt())).thenReturn(null);
doThrow(new RuntimeException()).when(mock).someVoidMethod(anyObject());

verify(mock).someMethod(contains("foo"))

Also, this error might show up because you use argument matchers with methods 
that cannot be mocked Following methods *cannot* be stubbed/verified: final/private/equals()
/hashCode().

知道我做错了什么吗？

Answer 1

我相信问题在于 anyString()是在您的 thenReturn(...) 中用作参数时提示的匹配器称呼。如果您不在乎返回的内容，只需返回一个空字符串 a la thenReturn("") .