如何正确匹配 Mockito 中的可变参数

2022-01-08 00:00:00 mocking mockito java variadic-functions

我一直在尝试使用 Mockito 模拟具有可变参数参数的方法:

I've been trying to get to mock a method with vararg parameters using Mockito:

interface A {
  B b(int x, int y, C... c);
}

A a = mock(A.class);
B b = mock(B.class);

when(a.b(anyInt(), anyInt(), any(C[].class))).thenReturn(b);
assertEquals(b, a.b(1, 2));

这不起作用，但是如果我这样做:

This doesn't work, however if I do this instead:

when(a.b(anyInt(), anyInt())).thenReturn(b);
assertEquals(b, a.b(1, 2));

这可行，尽管我在存根方法时完全省略了可变参数参数.

This works, despite that I have completely omitted the varargs argument when stubbing the method.

有什么线索吗?

推荐答案

Mockito 1.8.1 引入 anyVararg() 匹配器:

Mockito 1.8.1 introduced anyVararg() matcher:

when(a.b(anyInt(), anyInt(), Matchers.<String>anyVararg())).thenReturn(b);

另请参阅历史记录:https://code.google.com/存档/p/mockito/issues/62

编辑弃用后的新语法:

when(a.b(anyInt(), anyInt(), ArgumentMatchers.<String>any())).thenReturn(b);

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