Create moq for property in entity framework

[solai kannan]

hi i have a method is repository

 public bool UpdateEffectiveDate(int driverId, DateTime effectiveDate, string UserId)

        {

            db myentity=new myentity();

            Driver driver = db.Drivers.Find(driverId);

            driver.EffectiveDate = effectiveDate;

            driver.LastModifiedBy = UserId;

            driver.LastModifiedDate = DateTime.Now;

            db.Drivers.Attach(driver);

            db.Entry(driver).Property(x => x.EffectiveDate).IsModified = true;

            db.Entry(driver).Property(x => x.LastModifiedBy).IsModified = true;

            db.Entry(driver).Property(x => x.LastModifiedDate).IsModified = true;

            return (db.SaveChanges() > 0);

        }

the moq must be created for entity, can anyone say how to create a moq for this method.

and how to create moq to properties like " db.Entry(driver).Property(x => x.EffectiveDate).IsModified" .

thanks in advance