public void BeginnenMetEenContext()
{
using (var context = new SeriesContext(options))
{
context.Database.Migrate();
var serie = new Serie
{
Id = 0,
Title = $"Narcos{Guid.NewGuid()}"
};
context.Series.Add(serie);
var season = new Season
{
Id = 0,
Title = "Season 1"
};
serie.Seasons.Add(season);
var episode = new Episode
{
Id = 0,
Title = "Descenso"
};
season.Episodes.Add(episode);
context.SaveChanges();
}
}
public void DeTitleVanEenSerieMoetUniekZijn()
{
using (var connection = new SqlConnection(@"Server=.\SQLEXPRESS;Database=Series;Trusted_Connection=true"))
{
connection.Open();
using (var tx = connection.BeginTransaction())
{
var options = new DbContextOptionsBuilder <SeriesContext>()
.UseSqlServer(connection)
.Options;
// Arrange
using (var context = new SeriesContext(options))
{
context.Database.UseTransaction(tx);
context.Series.Add(new Serie {
Title = "UNIEK"
});
context.SaveChanges();
}
using (var context = new SeriesContext(options))
{
context.Database.UseTransaction(tx);
context.Series.Add(new Serie {
Title = "UNIEK"
});
var ex = Assert.Throws <DbUpdateException>(() => context.SaveChanges());
Assert.Contains("duplicate", ex.InnerException.Message);
Assert.Contains("UNIEK", ex.InnerException.Message);
}
}
}
}
public void HoeWerkenTransactionsEnUniqueConstraintsTegenSqlite()
{
var file = "test.db";
File.Delete(file);
using (var connection = new SqliteConnection($"FileName={file}"))
{
connection.Open();
var options = new DbContextOptionsBuilder <SeriesContext>()
.UseSqlite(connection)
.Options;
using (var context = new SeriesContext(options))
{
context.Database.EnsureCreated();
}
using (var tx = connection.BeginTransaction())
{
// Arrange
using (var context = new SeriesContext(options))
{
context.Database.UseTransaction(tx);
context.Series.Add(new Serie {
Title = "UNIEK"
});
context.SaveChanges();
}
using (var context = new SeriesContext(options))
{
context.Database.UseTransaction(tx);
context.Series.Add(new Serie {
Title = "UNIEK"
});
var ex = Assert.Throws <DbUpdateException>(() => context.SaveChanges());
Assert.Contains("UNIQUE", ex.InnerException.Message);
}
}
}
}