in src/it/java/com/epam/digital/data/platform/starter/security/WebSecurityConfigIT.java [107:116]
public void shouldReturn401() throws Exception {
String responseBody = mockMvc.perform(MockMvcRequestBuilders.get("/test"))
.andExpect(status().is(401)).andReturn().getResponse().getContentAsString();
assertThat(responseBody).isNotNull();
ErrorRestResponseDto errorRestResponseDto = objectMapper
.readValue(responseBody, ErrorRestResponseDto.class);
assertThat(errorRestResponseDto.getError().getCode()).isEqualTo("401");
assertThat(errorRestResponseDto.getError().getMessage()).isEqualTo("Unauthorized");
}