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// project created on 30/11/2002 at 22:00
//
// Author:
// Francisco Figueiredo Jr. <fxjrlists@yahoo.com>
//
// Copyright (C) 2002 The Npgsql Development Team
// npgsql-general@gborg.postgresql.org
// http://gborg.postgresql.org/project/npgsql/projdisplay.php
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using Npgsql;
using System.Data;
using System.Resources;
using NUnit.Framework;
using System.Collections.Generic;
using NpgsqlTypes;
namespace NpgsqlTests
{
[TestFixture]
public class ConnectionTests : TestBase
{
public ConnectionTests(string backendVersion) : base(backendVersion) { }
[Test]
public void ChangeDatabase()
{
Conn.ChangeDatabase("template1");
var command = new NpgsqlCommand("select current_database()", Conn);
var result = (String)command.ExecuteScalar();
Assert.AreEqual("template1", result);
}
[Test]
public void ChangeDatabaseTestConnectionCache()
{
using (var conn1 = new NpgsqlConnection(ConnectionString))
using (var conn2 = new NpgsqlConnection(ConnectionString))
{
// connection 1 change database
conn1.Open();
conn1.ChangeDatabase("template1");
var command = new NpgsqlCommand("select current_database()", conn1);
var db1 = (String)command.ExecuteScalar();
Assert.AreEqual("template1", db1);
// connection 2 's database should not changed, so should different from conn1
conn2.Open();
command = new NpgsqlCommand("select current_database()", conn2);
var db2 = (String)command.ExecuteScalar();
Assert.AreNotEqual(db1, db2);
}
}
[Test]
[ExpectedException(typeof(InvalidOperationException))]
public void NestedTransaction()
{
using (Conn.BeginTransaction())
{
using (Conn.BeginTransaction())
{
}
}
}
[Test]
public void SequencialTransaction()
{
Conn.BeginTransaction().Rollback();
Conn.BeginTransaction();
}
[Test]
public void ConnectionRefused()
{
try
{
var conn = new NpgsqlConnection("Server=127.0.0.1;Port=44444;User Id=npgsql_tets;Password=j");
conn.Open();
}
catch (NpgsqlException e)
{
var type_NpgsqlState = typeof(NpgsqlConnection).Assembly.GetType("Npgsql.NpgsqlState");
var resman = new ResourceManager(type_NpgsqlState);
var expected = string.Format(resman.GetString("Exception_FailedConnection"), "127.0.0.1");
Assert.AreEqual(expected, e.Message);
}
}
[Test]
[ExpectedException(typeof(NpgsqlException))]
public void ConnectionStringWithEqualSignValue()
{
var conn = new NpgsqlConnection("Server=127.0.0.1;Port=44444;User Id=npgsql_tets;Password=j==");
conn.Open();
}
[Test]
[ExpectedException(typeof(NpgsqlException))]
public void ConnectionStringWithSemicolonSignValue()
{
var conn = new NpgsqlConnection("Server=127.0.0.1;Port=44444;User Id=npgsql_tets;Password='j;'");
conn.Open();
}
[Test]
public void ConnectionMinPoolSize()
{
var conn = new NpgsqlConnection(ConnectionString + ";MinPoolSize=30;MaxPoolSize=30");
conn.Open();
conn.Close();
conn = new NpgsqlConnection(ConnectionString + ";MaxPoolSize=30;MinPoolSize=30");
conn.Open();
conn.Close();
}
[Test]
[ExpectedException(typeof(ArgumentOutOfRangeException))]
public void ConnectionMinPoolSizeLargeThanMaxPoolSize()
{
var conn = new NpgsqlConnection(ConnectionString + ";MinPoolSize=2;MaxPoolSize=1");
conn.Open();
conn.Close();
}
[Test]
[ExpectedException(typeof(ArgumentOutOfRangeException))]
public void ConnectionMinPoolSizeLargeThanPoolSizeLimit()
{
var conn = new NpgsqlConnection(ConnectionString + ";MinPoolSize=1025;");
conn.Open();
conn.Close();
}
[Test]
public void SearchPathSupport()
{
using (var conn = new NpgsqlConnection(ConnectionString + ";searchpath=public"))
{
conn.Open();
var c = new NpgsqlCommand("show search_path", conn);
var searchpath = (String)c.ExecuteScalar();
//Note, public is no longer implicitly added to paths, so this is no longer "public, public".
Assert.AreEqual("public", searchpath);
}
}
[Test]
public void ConnectorNotInitializedException1000581()
{
var command = new NpgsqlCommand();
command.CommandText = @"SELECT 123";
for (var i = 0; i < 2; i++)
{
using (var connection = new NpgsqlConnection(ConnectionString))
{
connection.Open();
command.Connection = connection;
command.Transaction = connection.BeginTransaction();
command.ExecuteScalar();
command.Transaction.Commit();
}
}
}
[Test]
public void UseAllConnectionsInPool()
{
// As this method uses a lot of connections, clear all connections from all pools before starting.
// This is needed in order to not reach the max connections allowed and start to raise errors.
NpgsqlConnection.ClearAllPools();
try
{
var openedConnections = new List<NpgsqlConnection>();
// repeat test to exersize pool
for (var i = 0; i < 10; ++i)
{
try
{
// 18 since base class opens two and the default pool size is 20
for (var j = 0; j < 18; ++j)
{
var connection = new NpgsqlConnection(ConnectionString);
connection.Open();
openedConnections.Add(connection);
}
}
finally
{
openedConnections.ForEach(delegate(NpgsqlConnection con) { con.Dispose(); });
openedConnections.Clear();
}
}
}
finally
{
NpgsqlConnection.ClearAllPools();
}
}
[Test]
[ExpectedException]
public void ExceedConnectionsInPool()
{
var openedConnections = new List<NpgsqlConnection>();
try
{
// exceed default pool size of 20
for (var i = 0; i < 21; ++i)
{
var connection = new NpgsqlConnection(ConnectionString + ";Timeout=1");
connection.Open();
openedConnections.Add(connection);
}
}
finally
{
openedConnections.ForEach(delegate(NpgsqlConnection con) { con.Dispose(); });
NpgsqlConnection.ClearAllPools();
}
}
[Test]
[Ignore]
public void NpgsqlErrorRepro1()
{
using (var connection = new NpgsqlConnection(ConnectionString))
{
connection.Open();
using (var transaction = connection.BeginTransaction())
{
var largeObjectMgr = new LargeObjectManager(connection);
try
{
var largeObject = largeObjectMgr.Open(-1, LargeObjectManager.READWRITE);
transaction.Commit();
}
catch
{
// ignore the LO failure
}
} // *1* sometimes it throws "System.NotSupportedException: This stream does not support seek operations"
using (var command = connection.CreateCommand())
{
command.CommandText = "SELECT * FROM pg_database";
using (var reader = command.ExecuteReader())
{
Assert.IsTrue(reader.Read()); // *2* this fails if the initial connection is used
}
}
} // *3* sometimes it throws "System.NotSupportedException: This stream does not support seek operations"
}
[Test]
public void Bug1011001()
{
//[#1011001] Bug in NpgsqlConnectionStringBuilder affects on cache and connection pool
var csb1 = new NpgsqlConnectionStringBuilder(@"Server=server;Port=5432;User Id=user;Password=passwor;Database=database;");
var cs1 = csb1.ToString();
var csb2 = new NpgsqlConnectionStringBuilder(cs1);
var cs2 = csb2.ToString();
Assert.IsTrue(cs1 == cs2);
}
[Test]
public void Bug1011241_DiscardAll()
{
var connection = new NpgsqlConnection(ConnectionString + ";SearchPath=public");
connection.Open();
if (connection.PostgreSqlVersion < new Version(8, 3, 0)
|| new NpgsqlConnectionStringBuilder(ConnectionString).Protocol == ProtocolVersion.Version2)
{
connection.Close();
return;
}
using (var command = connection.CreateCommand())
{
command.CommandText = "SHOW SEARCH_PATH";
Assert.AreEqual("public", command.ExecuteScalar());
command.CommandText = "SET SEARCH_PATH = \"$user\"";
command.ExecuteNonQuery();
command.CommandText = "SHOW SEARCH_PATH";
Assert.AreEqual("\"$user\"", command.ExecuteScalar());
}
connection.Close();
connection.Open();
using (var command = connection.CreateCommand())
{
command.CommandText = "SHOW SEARCH_PATH";
Assert.AreEqual("public", command.ExecuteScalar());
}
connection.Close();
}
[Test]
public void NpgsqlErrorRepro2()
{
var connection = new NpgsqlConnection(ConnectionString);
connection.Open();
var transaction = connection.BeginTransaction();
var largeObjectMgr = new LargeObjectManager(connection);
try
{
var largeObject = largeObjectMgr.Open(-1, LargeObjectManager.READWRITE);
transaction.Commit();
}
catch
{
// ignore the LO failure
try
{
transaction.Dispose();
}
catch
{
// ignore dispose failure
}
try
{
connection.Dispose();
}
catch
{
// ignore dispose failure
}
}
using (connection = new NpgsqlConnection(ConnectionString))
{
connection.Open();
using (var command = connection.CreateCommand())
{
command.CommandText = "SELECT * FROM pg_database";
using (var reader = command.ExecuteReader())
{
Assert.IsTrue(reader.Read());
// *1* this fails if the connection for the pool happens to be the bad one from above
Assert.IsTrue(!String.IsNullOrEmpty((string)reader["datname"]));
}
}
}
}
[Test]
public void GetSchemaForeignKeys()
{
var dt = Conn.GetSchema("ForeignKeys");
Assert.IsNotNull(dt);
}
[Test]
public void ChangeState()
{
using (var c = new NpgsqlConnection(ConnectionString))
{
var stateChangeCalledForOpen = false;
var stateChangeCalledForClose = false;
c.StateChange += new StateChangeEventHandler(delegate(object sender, StateChangeEventArgs e)
{
if (e.OriginalState == ConnectionState.Closed && e.CurrentState == ConnectionState.Open)
stateChangeCalledForOpen = true;
if (e.OriginalState == ConnectionState.Open && e.CurrentState == ConnectionState.Closed)
stateChangeCalledForClose = true;
});
c.Open();
c.Close();
Assert.IsTrue(stateChangeCalledForOpen);
Assert.IsTrue(stateChangeCalledForClose);
}
}
[Test]
public void GetSchemaParameterMarkerFormats()
{
ExecuteNonQuery(@"INSERT INTO data (field_int4) VALUES (4)");
var dt = Conn.GetSchema("DataSourceInformation");
var parameterMarkerFormat = (string)dt.Rows[0]["ParameterMarkerFormat"];
using (var connection = new NpgsqlConnection(ConnectionString))
{
connection.Open();
using (var command = connection.CreateCommand())
{
const String parameterName = "p_field_int4";
command.CommandText = "SELECT * FROM data WHERE field_int4=" + String.Format(parameterMarkerFormat, parameterName);
command.Parameters.Add(new NpgsqlParameter(parameterName, 4));
using (var reader = command.ExecuteReader())
{
Assert.IsTrue(reader.Read());
// This is OK, when no exceptions are occurred.
}
}
}
}
[Test]
public void CheckExtraFloatingDigitsHigherThanTwo()
{
using (NpgsqlCommand c = new NpgsqlCommand("show extra_float_digits", Conn))
{
string extraDigits = (string) c.ExecuteScalar();
if (Conn.PostgreSqlVersion >= new Version(9, 0, 0))
{
Assert.AreEqual(extraDigits, "3");
}
else
{
Assert.AreEqual(extraDigits, "2");
}
}
}
}
}