xUnit with Moq. Test CRUD operation (generic dataservice) Entity Framework Core 6 - entity-framework-6

Question

I am trying to test my project using ef 6. here is the situation: I have the mold class and have some generic services like GetAll,GetById,Create,Update, Delete. trying to test these methods using xUnit. Stuck in mocking.
public partial class TblPtsVMold :IMoldObject
{
public int MoldId { get; set; }
public string? MoldType { get; set; }
public string? Plant { get; set; }
}
public partial class PTSProdContext : DbContext
{
private IConfiguration _configuration { get; set; }
public PTSProdContext()
{
}
public PTSProdContext(DbContextOptions<PTSProdContext> options)
: base(options)
{
}
public virtual DbSet<TblPtsVMold> TblPtsVMolds { get; set; } = null!;
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
if (!optionsBuilder.IsConfigured)
{
optionsBuilder.UseSqlServer
(_configuration.GetConnectionString
(_configuration["EnvionmentString:ENVIRONMENT"]));
}
}
}
public class PTSContextFactory
{
public string DbConnectionString { get; set; }
public PTSContextFactory(string dbConnectionString)
{
DbConnectionString = dbConnectionString;
}
public PTSProdContext CreateDbContext()
{
DbContextOptionsBuilder<PTSProdContext> options = new DbContextOptionsBuilder<PTSProdContext>();
options.UseSqlServer(DbConnectionString);
return new PTSProdContext(options.Options);
}
public interface IDataService<T>
{
IEnumerable<T> GetAll();
IEnumerable<T> GetAllWithID(List<int> Ids);
T Get(int id);
T Create(T entity);
}
generic dataservice class
public class GenericDataService<T> : IDataService<T> where T : class, IDomainObject
{
public readonly PTSContextFactory _contextFactory;
public GenericDataService(PTSContextFactory contextFactory)
{
_contextFactory = contextFactory;
}
public GenericDataService()
{
}
public IEnumerable<T> GetAllWithID(List<int> Ids)
{
using (PTSProdContext context = _contextFactory.CreateDbContext())
{
IEnumerable<T> entities = context.Set<T>().Where(e => Ids.Contains(e.Id)).ToList();
if (entities == null)
{
WeakReferenceMessenger.Default.Send(new LookupExceptionMessage(string.Format("Can't find record.")));
return default;
}
return entities;
}
}
public IEnumerable<T> GetAll()
{
using (PTSProdContext context = _contextFactory.CreateDbContext())
{
IEnumerable<T> results = context.Set<T>().ToList();
if (results == null)
{
return default;
}
return results;
}
}
Test:
[Fact]
public void GetAll_TestClassObjectPassed_ProperMethodCalled()
{
// Arrange
var testObject = new TblPtsVMold() { Id = 1 };
var testList = new List<TblPtsVMold>() { testObject };
var data = new List<TblPtsVMold>
{
new TblPtsVMold { MoldType = "test",Plant="testpass1" },
new TblPtsVMold { MoldType = "ZZZ",Plant="testpass2" },
new TblPtsVMold { MoldType = "AAA",Plant="testpass3" },
}.AsQueryable();
var dbSetMock = new Mock<DbSet<TblPtsVMold>>();
dbSetMock.As<IQueryable<TblPtsVMold>>().Setup(x => x.Provider).Returns(testList.AsQueryable().Provider);
dbSetMock.As<IQueryable<TblPtsVMold>>().Setup(x => x.Expression).Returns(testList.AsQueryable().Expression);
dbSetMock.As<IQueryable<TblPtsVMold>>().Setup(x => x.ElementType).Returns(testList.AsQueryable().ElementType);
dbSetMock.As<IQueryable<TblPtsVMold>>().Setup(x => x.GetEnumerator()).Returns(testList.AsQueryab`your text`le().GetEnumerator());
var context = new Mock<PTSProdContext>();
context.Setup(x => x.Set<TblPtsVMold>()).Returns(dbSetMock.Object);
// Act
var context = new Mock<PTSContextFactory>();
context.Setup(x => x.DbConnectionString).Returns(string.Empty);
var service = new GenericDataService<TblPtsVMold>(context.Object);
var result = service.GetAll();
// Assert
Assert.Equal(testList, result.ToList());
}
context.Setup(x => x.DbConnectionString).Returns(string.Empty); is not correct.
getting error:pportedException : Unsupported expression: x => x.DbConnectionString Non-overridable members (here: PTSContextFactory.get_DbConnectionString) may not be used in setup verification expressions.
How to test GetAll or create method. Is anything wrong here?