public async Task using_ISqlConnectionController_extension_methods_asynchronous()
{
string tableName = "CK.t" + Guid.NewGuid().ToString( "N" );
var create = new SqlCommand( $"create table {tableName} ( id int, name varchar(10) ); insert into {tableName}(id,name) values (1,'One'), (2,'Two'), (3,'Three');" );
var scalar = new SqlCommand( $"select name from {tableName} where id=@Id;" );
scalar.Parameters.AddWithValue( "@Id", 3 );
var row = new SqlCommand( $"select top 1 id, name from {tableName} order by id;" );
var reader = new SqlCommand( $"select id, name from {tableName} order by id;" );
var clean = new SqlCommand( $"drop table {tableName};" );
using( var ctx = new SqlStandardCallContext( TestHelper.Monitor ) )
{
ISqlConnectionController c = ctx[TestHelper.GetConnectionString()];
c.Connection.State.Should().Be( ConnectionState.Closed );
await c.ExecuteNonQueryAsync( create );
(await c.ExecuteScalarAsync( scalar )).Should().Be( "Three" );
var rowResult = await c.ExecuteSingleRowAsync( row, r => Tuple.Create( r.GetInt32( 0 ), r.GetString( 1 ) ) );
rowResult.Item1.Should().Be( 1 );
rowResult.Item2.Should().Be( "One" );
var readerResult = await c.ExecuteReaderAsync( reader, r => Tuple.Create( r.GetInt32( 0 ), r.GetString( 1 ) ) );
readerResult.Should().HaveCount( 3 );
readerResult[0].Item1.Should().Be( 1 );
readerResult[1].Item2.Should().Be( "Two" );
readerResult[2].Item2.Should().Be( "Three" );
await c.ExecuteNonQueryAsync( clean );
}
}
void AsyncCallCatch <TException>(string cmd, string connectionString = null)
{
using (IDisposableSqlCallContext c = new SqlStandardCallContext(TestHelper.Monitor))
using (var command = new SqlCommand(cmd))
{
ISqlConnectionController con = c[connectionString ?? TestHelper.GetConnectionString()];
try
{
// If the asynchronous process is lost (if the exception is not correctly managed),
// this test will fail with a task Cancelled exception after:
// - 30 second when testing for connection string.... because when trying to resolve a bad server name it takes a loooooooong time.
// - 1 second in other cases.
CancellationTokenSource source = new CancellationTokenSource();
source.CancelAfter(connectionString == null ? 1000 : 30 * 1000);
con.ExecuteNonQueryAsync(command, source.Token)
.Wait();
}
catch (AggregateException ex)
{
Assert.That(ex.GetBaseException(), Is.InstanceOf <TException>());
}
}
}