public void UpdateAuditInfo_should_retrieve_username_from_principal() { // Arrange var service = new TestClass(null, CurrentUserPrincipal()); var actual = new Lot(); // Act service.TestUpdateAuditInfo(actual); // Assert actual.AuditInfo.Username.Should().Be("jeremyholt"); actual.AuditInfo.Updated.Should().BeCloseTo(DateTime.Now, 2000); }