doReturn
mockito5.4.0单元测试(11) --do when家族的方法们：doReturn()|doThrow()| doAnswer()| donnothing ()|doCallRealMethod()
mockito官方文档地址： https://www.javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#do_family_methods_stubs // mock一个对象 HashMap mockMap ......