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ConnectionPoolTests.cs
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133 lines (123 loc) · 4.93 KB
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#region License
// The PostgreSQL License
//
// Copyright (C) 2015 The Npgsql Development Team
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NUnit.Framework;
namespace Npgsql.Tests
{
class ConnectionPoolTests : TestBase
{
[Test]
public void MinPoolSize()
{
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(ArgumentException))]
public void MinPoolSizeLargeThanMaxPoolSize()
{
var conn = new NpgsqlConnection(ConnectionString + ";MinPoolSize=2;MaxPoolSize=1");
conn.Open();
conn.Close();
}
[Test]
[ExpectedException(typeof(ArgumentException))]
public void MinPoolSizeLargeThanPoolSizeLimit()
{
var conn = new NpgsqlConnection(ConnectionString + ";MinPoolSize=1025;");
conn.Open();
conn.Close();
}
[Test, Description("Makes sure that when a pooled connection is closed it's properly reset, and that parameter settings aren't leaked")]
public void ResetOnClose()
{
var conn = new NpgsqlConnection(ConnectionString + ";SearchPath=public");
conn.Open();
ExecuteNonQuery("DROP SCHEMA IF EXISTS foo");
ExecuteNonQuery("CREATE SCHEMA foo");
try
{
ExecuteNonQuery("SET search_path=foo", conn);
conn.Close();
conn.Open();
Assert.That(ExecuteScalar("SHOW search_path", conn), Is.EqualTo("public"));
conn.Close();
}
finally
{
ExecuteNonQuery("DROP SCHEMA foo");
}
}
[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();
}
}
public ConnectionPoolTests(string backendVersion) : base(backendVersion) {}
}
}