public void CallingProcessWithPerformDbOperationExpressionWhenInPreviewOnlyModeWillNotMakeDbChanges()
{
var output = new StringWriter();
var connection = new NpgsqlConnection(IntegrationTestOptions.Postgres.ConnectionString);
var processor = new PostgresProcessor(
connection,
new PostgresGenerator(),
new TextWriterAnnouncer(output),
new ProcessorOptions {
PreviewOnly = true
},
new PostgresDbFactory());
bool tableExists;
try
{
var expression =
new PerformDBOperationExpression
{
Operation = (con, trans) =>
{
var command = con.CreateCommand();
command.CommandText = "CREATE TABLE processtesttable (test int NULL) ";
command.Transaction = trans;
command.ExecuteNonQuery();
}
};
processor.BeginTransaction();
processor.Process(expression);
var com = connection.CreateCommand();
com.CommandText = "";
tableExists = processor.TableExists("public", "processtesttable");
}
finally
{
processor.RollbackTransaction();
}
tableExists.ShouldBeFalse();
output.ToString().ShouldBe(
@"/* Beginning Transaction */
/* Performing DB Operation */
/* Rolling back transaction */
");
}
protected static void ExecuteWithPostgres(Action <IMigrationProcessor> test, IntegrationTestOptions.DatabaseServerOptions serverOptions, Boolean tryRollback)
{
if (!serverOptions.IsEnabled)
{
return;
}
var connection = new NpgsqlConnection(serverOptions.ConnectionString);
var processor = new PostgresProcessor(connection, new PostgresGenerator(), new TextWriterAnnouncer(System.Console.Out), new ProcessorOptions(), new PostgresDbFactory());
test(processor);
if (!processor.WasCommitted)
{
processor.RollbackTransaction();
}
}