public void ThrowsArgumentNullException_WhenPassedIdDoesntExist()
{
// Arrange
var visitsServiceMock = new Mock <IVisitsService>();
var municipalitiesServiceMock = new Mock <IMunicipalitiesService>();
var usersServiceMock = new Mock <IUserService>();
var pageServiceMock = new Mock <IPageService <Visit> >();
var controller = new VisitsController(visitsServiceMock.Object, municipalitiesServiceMock.Object, usersServiceMock.Object, pageServiceMock.Object);
var testId = Guid.NewGuid();
visitsServiceMock.Setup(v => v.GetById(It.IsAny <Guid>())).Returns((Visit)null);
// Act & Assert
Assert.ThrowsException <ArgumentNullException>(() => controller.Open(testId));
}
