Unit test notes

get

MvcResult mvcResult = mockMvc.perform(MockMvcRequestBuilders.get("")
                    .headers(new HttpHeaders())
                    .contentType(MediaType.APPLICATION_JSON))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andReturn();
            String contentAsString = mvcResult.getResponse().getContentAsString(StandardCharsets.UTF_8);

post

MvcResult mvcResult = mockMvc.perform(MockMvcRequestBuilders.post("")
                    .headers(new HttpHeaders())
                    .content("")//json character string 
                    .contentType(MediaType.APPLICATION_JSON))
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andReturn();
            String contentAsString = mvcResult.getResponse().getContentAsString(StandardCharsets.UTF_8);