public void GraphNewAndExistingEntities()
{
using (SakilaLiteUpdateContext context = new SakilaLiteUpdateContext())
{
context.InitContext();
Actor actorNoId, actor;
context.Attach(actorNoId = new Actor {
FirstName = "PENELOPE", LastName = "GUINESS"
});
context.Attach(actor = new Actor {
ActorId = 21, FirstName = "KIRSTEN", LastName = "PALTROW"
});
var changes = context.ChangeTracker.Entries();
Assert.Equal(2, changes.Count());
Assert.Collection(changes,
item =>
{
Assert.Equal(EntityState.Added, item.State);
},
item =>
{
Assert.Equal(EntityState.Unchanged, item.State);
});
context.SaveChanges();
var list = context.Actor.ToList();
Assert.Equal(1, list.Count);
}
}
public void GraphNewAndExistingEntities()
{
using (SakilaLiteUpdateContext context = new SakilaLiteUpdateContext())
{
context.InitContext();
Actor actorNoId, actor;
context.Attach(actorNoId = new Actor {
FirstName = "PENELOPE", LastName = "GUINESS"
});
context.Attach(actor = new Actor {
ActorId = 21, FirstName = "KIRSTEN", LastName = "PALTROW"
});
var changes = context.ChangeTracker.Entries();
Assert.AreEqual(2, changes.Count());
Assert.That(changes.Select(c => c.State), Has.Exactly(1).Matches <EntityState>(state => state.Equals(EntityState.Added)));
Assert.That(changes.Select(c => c.State), Has.Exactly(1).Matches <EntityState>(state => state.Equals(EntityState.Unchanged)));
context.SaveChanges();
var list = context.Actor.ToList();
Assert.AreEqual(1, list.Count);
}
}
public void StringInterpolationInSqlCommands()
{
using (SakilaLiteUpdateContext context = new SakilaLiteUpdateContext())
{
context.InitContext();
int id = 1;
string firstName = "PENELOPE";
string lastName = "GUINESS";
DateTime lastUpdate = DateTime.Parse("2006-02-15 04:34:33");
context.Database.ExecuteSqlCommand($"INSERT INTO actor(actor_id, first_name, last_name, last_update) VALUES ({id}, {firstName}, {lastName}, {lastUpdate:u})");
Actor actor = context.Set <Actor>().FromSql($"SELECT * FROM actor WHERE actor_id={id} and last_name={lastName}").First();
Assert.Equal(id, actor.ActorId);
Assert.Equal(firstName, actor.FirstName);
}
}
public void TransactionScopeTest()
{
using (var context = new SakilaLiteUpdateContext())
{
context.InitContext(false);
}
using (TransactionScope scope = new TransactionScope(TransactionScopeOption.Required,
new TransactionOptions {
IsolationLevel = IsolationLevel.ReadCommitted
}))
{
using (MySqlConnection connection = new MySqlConnection(MySQLTestStore.GetContextConnectionString <SakilaLiteUpdateContext>()))
{
connection.Open();
MySqlCommand command = connection.CreateCommand();
command.CommandText = "DELETE FROM actor";
command.ExecuteNonQuery();
var options = new DbContextOptionsBuilder <SakilaLiteUpdateContext>()
.UseMySQL(connection)
.Options;
using (TransactionScope innerScope = new TransactionScope(TransactionScopeOption.Required))
{
using (var context = new SakilaLiteUpdateContext(options))
{
context.Actor.Add(new Actor
{
FirstName = "PENELOPE",
LastName = "GUINESS"
});
context.SaveChanges();
innerScope.Complete();
}
}
// Commit transaction if all commands succeed, transaction will auto-rollback
// when disposed if either commands fails
scope.Complete();
}
}
}
public void TransactionTest()
{
using (var context = new SakilaLiteUpdateContext())
{
context.InitContext(false);
MySqlTrace.LogInformation(9966, "EF Model CREATED");
}
using (MySqlConnection connection = new MySqlConnection(MySQLTestStore.GetContextConnectionString <SakilaLiteUpdateContext>()))
{
connection.Open();
using (MySqlTransaction transaction = connection.BeginTransaction())
{
MySqlCommand command = connection.CreateCommand();
command.CommandText = "DELETE FROM actor";
command.ExecuteNonQuery();
var options = new DbContextOptionsBuilder <SakilaLiteUpdateContext>()
.UseMySQL(connection)
.Options;
using (var context = new SakilaLiteUpdateContext(options))
{
context.Database.UseTransaction(transaction);
context.Actor.Add(new Actor
{
FirstName = "PENELOPE",
LastName = "GUINESS"
});
context.SaveChanges();
}
transaction.Commit();
}
}
}