Mockito/PowerMockito-模拟接收Lambda表达式作为参数的方法

如果您只想模拟函数参数,那么以下任一项都可以:

Mockito.when(convertStringtoInt(Matchers.anyList(), Mockito.any(Function.class))).thenReturn(myMockedList);

Mockito.when(convertStringtoInt(Matchers.anyList(), Mockito.<Function>anyObject())).thenReturn(myMockedList);

给定一个类, Foo ,其中包含方法: public List<String> convertStringtoInt(List<Integer> intList,Function<Integer, String> intToStringExpression) 以下测试用例通过:

@Test
public void test_withMatcher() {
    Foo foo = Mockito.mock(Foo.class);

    List<String> myMockedList = Lists.newArrayList("a", "b", "c");

    Mockito.when(foo.convertStringtoInt(Matchers.anyList(), Mockito.<Function>anyObject())).thenReturn(myMockedList);

    List<String> actual = foo.convertStringtoInt(Lists.newArrayList(1), new Function<Integer, String>() {
        @Override
        public String apply(Integer integer) {
            return null;
        }
    });

    assertEquals(myMockedList, actual);
}

thenAnswer() .