public void GetCurrentUserOid_ShouldReturnOid_WhenOidExists()
        {
            var okOid = new Guid("7DFC890F-F82B-4E2D-B81B-41D6C103F83B");
            var dut   = new CurrentUserProvider();

            dut.SetCurrentUserOid(okOid);

            var oid = dut.GetCurrentUserOid();

            Assert.AreEqual(okOid, oid);
        }
        public void GetCurrentUserOid_ThrowsException_WhenOidDoesNotExist()
        {
            var dut = new CurrentUserProvider();

            Assert.ThrowsException <Exception>(() => dut.GetCurrentUserOid());
        }