add tests for principal accessor

[github-actions]

Game-DB/api/test/java/com/StruckCroissant/GameDB/core/user/UserControllerTest.java

Line 176 in d536cdd

// TODO add tests for principal accessor

    assertThat(capturedGid).isEqualTo(UID);
  }


  @Test
  public void whenGetPrincpal_ThenReturnsPrincipal() throws Exception {
    // when
    MvcResult result = mockMvc
        .perform(
            MockMvcRequestBuilders.get(BASE_URL)
                .accept(MediaType.APPLICATION_JSON))
        .andExpect(status().isOk()
        ).andReturn();
    // TODO add tests for principal accessor
  }

}

[StruckCroissant]

Duplicate of #36