Insere produto com dados válidos quando logado como admin

    @Test
    public void insertShouldReturnProductDtoWhenValidDataAndLoggedAsAdmin() throws Exception {

        //converter o DTO para JSON
        String jsonBody = objectMapper.writeValueAsString(productDTO);


        ResultActions result =
                mockMvc.perform(post("/products")
                        // como usamos token, colocamos a header
                        .header("Authorization", "Bearer " + adminToken)
                        .content(jsonBody)
                        .contentType(MediaType.APPLICATION_JSON)
                        .accept(MediaType.APPLICATION_JSON))
                                .andDo(MockMvcResultHandlers.print());

        result.andExpect(status().isCreated());
        result.andExpect(jsonPath("$.id").value(26L));
        result.andExpect(jsonPath("$.name").value("Console Playstation 5"));
        result.andExpect(jsonPath("$.description").value("Lorem ipsum, dolor sit amet consectetur adipisicing elit."));
        result.andExpect(jsonPath("$.price").value(3999.90));
        result.andExpect(jsonPath("$.imgUrl").value("https://raw.githubusercontent.com/devsuperior/dscatalog-resources/master/backend/img/1-big.jpg"));
        //acessando a lista de categorias do JSON
        result.andExpect(jsonPath("$.categories[0].id").value(2L));
    }