public void ShouldAllowSettingServerGeneratedPropertiesWithIdentityInsert()
{
using (var trans = _context.Database.BeginTransaction())
{
var product = TestHelpers.CreateProduct("1");
var g = Guid.NewGuid();
product.Rowguid = g;
product.ProductId = 99999;
_context.Product.Add(product);
Assert.Equal(g, product.Rowguid);
var sql = $"SET IDENTITY_INSERT " +
$"{_context.GetSqlServerTableName<Product>()} ON";
_context.Database.ExecuteSqlCommand(sql);
_context.SaveChanges();
sql = $"SET IDENTITY_INSERT " +
$"{_context.GetSqlServerTableName<Product>()} OFF";
_context.Database.ExecuteSqlCommand(sql);
Assert.Equal(g, product.Rowguid);
Assert.Equal(99999, product.ProductId);
trans.Rollback();
}
}
public void ShouldThrowErrorWithConcurrencyViolation()
{
using (var transaction = _context.Database.BeginTransaction())
{
var product = TestHelpers.CreateProduct("1");
_context.Product.Add(product);
_context.SaveChanges();
string sql = $"UPDATE {_context.GetSqlServerTableName<Product>()} " +
$"SET Name = 'Foo' WHERE {nameof(Product.ProductId)} = {product.ProductId}";
_context.Database.ExecuteSqlCommand(sql);
product.MakeFlag = false;
try
{
_context.SaveChanges();
}
catch (DbUpdateConcurrencyException ex)
{
//Get Current value for name
var entityInError = ex.Entries[0];
PropertyValues originalValues = entityInError.OriginalValues;
PropertyValues proposedValues = entityInError.CurrentValues;
//This makes a database call to get the current values in the database
PropertyValues databaseValues = entityInError.GetDatabaseValues();
Debug.WriteLine("Name");
Debug.WriteLine($"Original Name: {originalValues.GetValue<string>(nameof(Product.Name))}");
Debug.WriteLine($"Proposed Name: {proposedValues.GetValue<string>(nameof(Product.Name))}");
Debug.WriteLine($"Database Name: {databaseValues.GetValue<string>(nameof(Product.Name))}");
Debug.WriteLine("Make Flag");
//this is just a different syntax to above
Debug.WriteLine(
$"Original Make Flag: {entityInError.Property(nameof(Product.MakeFlag)).OriginalValue}");
Debug.WriteLine(
$"Proposed Make Flag: {entityInError.Property(nameof(Product.MakeFlag)).CurrentValue}");
var modifiedProperties = entityInError.Properties.Where(p => p.IsModified).ToList();
foreach (var p in modifiedProperties)
{
Debug.WriteLine($"{p.Metadata.Name}:{p.OriginalValue}:{p.CurrentValue}");
}
//This reloads the entity from the database, discarding any proposed changes
//entityInError.Reload();
}
transaction.Rollback();
}
}
public void ShouldGetSqlServerSchemaAndTableName()
{
var schemaTableName = _context.GetSqlServerTableName <Product>();
Assert.Equal("Production.Product", schemaTableName);
}
