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ConnectionTests.cs
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963 lines (864 loc) · 38.3 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.Net.Sockets;
using System.Threading;
using System.Threading.Tasks;
using Npgsql;
using System.Data;
using System.Resources;
using NUnit.Framework;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net.Security;
using System.Text.RegularExpressions;
using NpgsqlTypes;
namespace Npgsql.Tests
{
[TestFixture]
public class ConnectionTests : TestBase
{
public ConnectionTests(string backendVersion) : base(backendVersion) { }
[Test, Description("Makes sure the connection goes through the proper state lifecycle")]
//[Timeout(5000)]
public void BasicLifecycle()
{
using (var conn = new NpgsqlConnection(ConnectionString))
{
bool eventOpen = false, eventClosed = false, eventBroken = false;
conn.StateChange += (s, e) =>
{
if (e.OriginalState == ConnectionState.Closed && e.CurrentState == ConnectionState.Open)
eventOpen = true;
if (e.OriginalState == ConnectionState.Open && e.CurrentState == ConnectionState.Closed)
eventClosed = true;
};
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
// TODO: Connecting state?
conn.Open();
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.Connector.State, Is.EqualTo(ConnectorState.Ready));
Assert.That(eventOpen, Is.True);
using (var cmd = new NpgsqlCommand("SELECT 1", conn))
using (var reader = cmd.ExecuteReader())
{
reader.Read();
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open | ConnectionState.Fetching));
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.Connector.State, Is.EqualTo(ConnectorState.Fetching));
}
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.Connector.State, Is.EqualTo(ConnectorState.Ready));
using (var cmd = CreateSleepCommand(conn, 1))
{
var exitFlag = false;
var pollingTask = Task.Factory.StartNew(() =>
{
while (true)
{
if (exitFlag) {
Assert.Fail("Connection did not reach the Executing state");
}
if (conn.Connector.State == ConnectorState.Executing)
{
Assert.That(conn.FullState & ConnectionState.Executing, Is.Not.EqualTo(0));
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
return;
}
}
});
cmd.ExecuteNonQuery();
exitFlag = true;
pollingTask.Wait();
}
conn.Close();
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
Assert.That(eventClosed, Is.True);
conn.Open();
Assert.That(conn.State, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open));
Assert.That(conn.Connector.State, Is.EqualTo(ConnectorState.Ready));
// Use another connection to kill our connection
ExecuteNonQuery(string.Format("SELECT pg_terminate_backend({0})", conn.ProcessID));
conn.StateChange += (sender, args) =>
{
if (args.CurrentState == ConnectionState.Closed)
eventBroken = true;
};
Assert.That(() => ExecuteScalar("SELECT 1", conn), Throws.Exception.TypeOf<IOException>());
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Broken));
Assert.That(eventBroken, Is.True);
}
}
#region Connection Errors
[Test]
[TestCase(true, TestName = "Pooled")]
[TestCase(false, TestName = "NonPooled")]
public void ConnectionRefused(bool pooled)
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Port = 44444, Pooling = pooled };
using (var conn = new NpgsqlConnection(csb)) {
Assert.That(() => conn.Open(), Throws.Exception
.TypeOf<SocketException>()
.With.Property("SocketErrorCode").EqualTo(SocketError.ConnectionRefused)
);
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
}
}
[Test]
[TestCase(true, TestName = "Pooled")]
[TestCase(false, TestName = "NonPooled")]
public void ConnectionRefusedAsync(bool pooled)
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Port = 44444, Pooling = pooled };
using (var conn = new NpgsqlConnection(csb))
{
Assert.That(async () => await conn.OpenAsync(), Throws.Exception
.TypeOf<SocketException>()
.With.Property("SocketErrorCode").EqualTo(SocketError.ConnectionRefused)
);
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
}
}
[Test]
[Ignore("Fails in a non-determinstic manner and only on the build server... investigate...")]
public void InvalidUserId()
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Username = "unknown", Pooling = false };
using (var conn = new NpgsqlConnection(csb))
{
Assert.That(conn.Open, Throws.Exception
.TypeOf<NpgsqlException>()
.With.Property("Code").EqualTo("28P01")
);
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
}
}
[Test, Description("Connects with a bad password to ensure the proper error is thrown")]
public void AuthenticationFailure()
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Password = "bad", Pooling = false };
using (var conn = new NpgsqlConnection(csb))
{
Assert.That(() => conn.Open(), Throws.Exception
.TypeOf<NpgsqlException>()
.With.Property("Code").EqualTo("28P01")
);
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
}
}
[Test, Description("Tests that mandatory connection string parameters are indeed mandatory")]
public void MandatoryConnectionStringParams()
{
Assert.That(() => new NpgsqlConnection("User ID=npgsql_tests;Password=npgsql_tests;Database=npgsql_tests").Open(), Throws.Exception.TypeOf<ArgumentException>());
}
[Test, Description("Reuses the same connection instance for a failed connection, then a successful one")]
public void FailConnectThenSucceed()
{
ExecuteNonQuery("DROP DATABASE IF EXISTS foo");
try
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) {
Database = "foo",
Pooling = false
};
using (var conn = new NpgsqlConnection(csb))
{
Assert.That(() => conn.Open(),
Throws.Exception.TypeOf<NpgsqlException>()
.With.Property("Code").EqualTo("3D000") // database doesn't exist
);
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Closed));
// Create the database with the other connection
ExecuteNonQuery("CREATE DATABASE foo TEMPLATE template0");
conn.Open();
conn.Close();
}
}
finally
{
ExecuteNonQuery("DROP DATABASE IF EXISTS foo");
}
}
[Test]
public void NoUsername()
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Username = null };
using (var conn = new NpgsqlConnection(csb))
Assert.That(() => conn.Open(), Throws.Exception.TypeOf<ArgumentException>());
}
[Test]
[Timeout(10000)]
public void ConnectTimeout()
{
var unknownIp = Environment.GetEnvironmentVariable("NPGSQL_UNKNOWN_IP");
if (unknownIp == null)
TestUtil.IgnoreExceptOnBuildServer("NPGSQL_UNKNOWN_IP isn't defined and is required for connection timeout tests");
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) {
Host = unknownIp,
Pooling = false,
Timeout = 2
};
using (var conn = new NpgsqlConnection(csb))
{
var sw = Stopwatch.StartNew();
Assert.That(() => conn.Open(), Throws.Exception.TypeOf<TimeoutException>());
Assert.That(sw.Elapsed.TotalMilliseconds, Is.GreaterThanOrEqualTo((csb.Timeout * 1000) - 100),
string.Format("Timeout was supposed to happen after {0} seconds, but fired after {1}", csb.Timeout, sw.Elapsed.TotalSeconds));
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
}
}
[Test]
[Timeout(10000)]
public void ConnectTimeoutAsync()
{
var unknownIp = Environment.GetEnvironmentVariable("NPGSQL_UNKNOWN_IP");
if (unknownIp == null)
TestUtil.IgnoreExceptOnBuildServer("NPGSQL_UNKNOWN_IP isn't defined and is required for connection timeout tests");
var csb = new NpgsqlConnectionStringBuilder(ConnectionString)
{
Host = unknownIp,
Pooling = false,
Timeout = 2
};
using (var conn = new NpgsqlConnection(csb))
{
Assert.That(async () => await conn.OpenAsync(), Throws.Exception.TypeOf<TimeoutException>());
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
}
}
[Test]
[Timeout(10000)]
public void ConnectTimeoutCancel()
{
var unknownIp = Environment.GetEnvironmentVariable("NPGSQL_UNKNOWN_IP");
if (unknownIp == null)
TestUtil.IgnoreExceptOnBuildServer("NPGSQL_UNKNOWN_IP isn't defined and is required for connection cancellation tests");
var csb = new NpgsqlConnectionStringBuilder(ConnectionString)
{
Host = unknownIp,
Pooling = false,
Timeout = 30
};
using (var conn = new NpgsqlConnection(csb))
{
var cts = new CancellationTokenSource();
cts.CancelAfter(1000);
Assert.That(async () => await conn.OpenAsync(cts.Token), Throws.Exception.TypeOf<TaskCanceledException>());
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
}
}
#endregion
#region Notification
[Test, Description("Simple synchronous LISTEN/NOTIFY scenario")]
public void NotificationSync()
{
var receivedNotification = false;
ExecuteNonQuery("LISTEN notifytest");
Conn.Notification += (o, e) => receivedNotification = true;
ExecuteNonQuery("NOTIFY notifytest");
Assert.IsTrue(receivedNotification);
}
[Test, Description("An asynchronous LISTEN/NOTIFY scenario")]
[Timeout(10000)]
public void NotificationAsync()
{
var mre = new ManualResetEvent(false);
using (var listeningConn = new NpgsqlConnection(ConnectionString + ";ContinuousProcessing=true"))
{
listeningConn.Open();
ExecuteNonQuery("LISTEN notifytest2", listeningConn);
listeningConn.Notification += (o, e) => mre.Set();
// Send notify via the other connection
ExecuteNonQuery("NOTIFY notifytest2");
mre.WaitOne();
// And again
mre.Reset();
ExecuteNonQuery("NOTIFY notifytest2");
mre.WaitOne();
}
}
[Test, Description("A notification arriving while we have an open Reader")]
public void NotificationDuringReader()
{
var receivedNotification = false;
using (var listeningConn = new NpgsqlConnection(ConnectionString + ";ContinuousProcessing=true"))
{
listeningConn.Open();
ExecuteNonQuery("LISTEN notifytest2", listeningConn);
listeningConn.Notification += (o, e) => receivedNotification = true;
using (var cmd = new NpgsqlCommand("SELECT 1", listeningConn))
using (cmd.ExecuteReader()) {
// Send notify via the other connection
ExecuteNonQuery("NOTIFY notifytest2");
Thread.Sleep(500);
}
}
Assert.That(receivedNotification, Is.True);
}
[Test, Description("Receive an asynchronous notification when a message has already been prepended")]
[Timeout(10000)]
public void NotificationAsyncWithPrepend()
{
var mre = new ManualResetEvent(false);
using (var listeningConn = new NpgsqlConnection(ConnectionString + ";ContinuousProcessing=true"))
{
listeningConn.Open();
ExecuteNonQuery("LISTEN notifytest2", listeningConn);
listeningConn.BeginTransaction();
// Send notify via the other connection
listeningConn.Notification += (o, e) => mre.Set();
ExecuteNonQuery("NOTIFY notifytest2");
mre.WaitOne();
}
}
[Test, Description("Generates a notification that arrives after reader data that is already being read")]
[IssueLink("https://github.com/npgsql/npgsql/issues/252")]
public void NotificationAfterData()
{
var receivedNotification = false;
using (var cmd = Conn.CreateCommand())
{
cmd.CommandText = "LISTEN notifytest1";
cmd.ExecuteNonQuery();
Conn.Notification += (o, e) => receivedNotification = true;
cmd.CommandText = "SELECT generate_series(1,10000)";
using (var reader = cmd.ExecuteReader()) {
//After "notify notifytest1", a notification message will be sent to client,
//And so the notification message will stick with the last response message of "select generate_series(1,10000)" in Npgsql's tcp receiving buffer.
using (var connection = new NpgsqlConnection(ConnectionString)) {
connection.Open();
using (var command = connection.CreateCommand()) {
command.CommandText = "NOTIFY notifytest1";
command.ExecuteNonQuery();
}
}
Assert.IsTrue(reader.Read());
Assert.AreEqual(1, reader.GetValue(0));
}
Assert.That(ExecuteScalar("SELECT 1"), Is.EqualTo(1));
Assert.IsTrue(receivedNotification);
}
}
#endregion
#region Keepalive
[Test, Description("Makes sure that if keepalive is enabled, broken connections are detected")]
[Timeout(10000)]
public void Keepalive()
{
var mre = new ManualResetEvent(false);
using (var conn = new NpgsqlConnection(ConnectionString + ";KeepAlive=1;ContinuousProcessing=true"))
{
conn.Open();
conn.StateChange += (sender, args) =>
{
if (args.CurrentState == ConnectionState.Closed)
mre.Set();
};
// Use another connection to kill our keepalive connection
ExecuteNonQuery(string.Format("SELECT pg_terminate_backend({0})", conn.ProcessID));
mre.WaitOne();
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Broken));
}
}
#endregion
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/703")]
public void NoDatabaseDefaultsToUsername()
{
var csb = new NpgsqlConnectionStringBuilder(ConnectionString) { Database = null };
using (var conn = new NpgsqlConnection(csb))
{
conn.Open();
Assert.That(ExecuteScalar("SELECT current_database()"), Is.EqualTo(csb.Username));
}
}
[Test, Description("Breaks a connector while it's in the pool, with a keepalive and without")]
[TestCase(false, TestName = "WithoutKeepAlive")]
[TestCase(false, TestName = "WithKeepAlive")]
public void BreakConnectorInPool(bool keepAlive)
{
using (var conn = new NpgsqlConnection(ConnectionString + ";MaxPoolSize=1" + (keepAlive ? ";KeepAlive=1" : "")))
{
conn.Open();
var connectorId = conn.ProcessID;
conn.Close();
// Use another connection to kill the connector currently in the pool
ExecuteNonQuery(string.Format("SELECT pg_terminate_backend({0})", connectorId));
conn.Open();
Assert.That(conn.ProcessID, Is.EqualTo(connectorId));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open));
if (keepAlive)
Assert.That(ExecuteScalar("SELECT 1", conn), Is.EqualTo(1));
else
Assert.That(() => ExecuteScalar("SELECT 1", conn), Throws.Exception);
}
}
[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]
public void NestedTransaction()
{
Conn.BeginTransaction();
Assert.That(() => Conn.BeginTransaction(), Throws.TypeOf<NotSupportedException>());
}
[Test]
public void BeginTransactionBeforeOpen()
{
using (var conn = new NpgsqlConnection())
{
Assert.That(() => conn.BeginTransaction(), Throws.Exception.TypeOf<InvalidOperationException>());
}
}
[Test]
public void SequencialTransaction()
{
Conn.BeginTransaction().Rollback();
Conn.BeginTransaction();
}
[Test, Description("Tests closing a connector while a reader is open")]
[TestCase(true, TestName = "Pooled")]
[TestCase(false, TestName = "NonPooled")]
[Timeout(10000)]
public void CloseDuringRead(bool pooled)
{
var conn = new NpgsqlConnection(ConnectionString + ";" + (pooled ? "MaxPoolSize=1" : "Pooling=false"));
conn.Open();
var connectorId = conn.ProcessID;
using (var cmd = new NpgsqlCommand("SELECT 1", conn))
using (var reader = cmd.ExecuteReader())
{
reader.Read();
conn.Close();
Assert.That(conn.State, Is.EqualTo(ConnectionState.Closed));
Assert.That(reader.IsClosed);
}
conn.Open();
if (pooled) // Make sure we can reuse the pooled connector
Assert.That(conn.ProcessID, Is.EqualTo(connectorId));
Assert.That(conn.FullState, Is.EqualTo(ConnectionState.Open));
Assert.That(ExecuteScalar("SELECT 1"), Is.EqualTo(1));
}
[Test]
public void SearchPath()
{
var connString = new NpgsqlConnectionStringBuilder(ConnectionString) { SearchPath = "foo" };
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
Assert.That(ExecuteScalar("SHOW search_path", conn), Contains.Substring("foo"));
}
}
[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]
[Ignore]
public void NpgsqlErrorRepro1()
{
throw new NotImplementedException();
#if WHAT_TO_DO_WITH_THIS
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"
#endif
}
[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 NpgsqlErrorRepro2()
{
#if WHAT_TO_DO_WITH_THIS
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"]));
}
}
}
#endif
}
[Test]
public void GetSchemaForeignKeys()
{
var dt = Conn.GetSchema("ForeignKeys");
Assert.IsNotNull(dt);
}
[Test]
public void GetSchemaParameterMarkerFormats()
{
ExecuteNonQuery("DROP TABLE IF EXISTS data; CREATE TABLE data (int INTEGER);");
ExecuteNonQuery("INSERT INTO data (int) 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_int";
command.CommandText = "SELECT * FROM data WHERE int=" + 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 GetConnectionState()
{
// Test created to PR #164
NpgsqlConnection c = new NpgsqlConnection();
c.Dispose();
Assert.AreEqual(ConnectionState.Closed, c.State);
}
[Test]
public void ChangeApplicationNameWithConnectionStringBuilder()
{
// Test for issue #165 on github.
NpgsqlConnectionStringBuilder builder = new NpgsqlConnectionStringBuilder();
builder.ApplicationName = "test";
}
[Test, Description("Makes sure notices are probably received and emitted as events")]
public void Notice()
{
// Make sure messages are in English
ExecuteNonQuery(@"SET lc_messages='English_United States.1252'");
ExecuteNonQuery(@"
CREATE OR REPLACE FUNCTION emit_notice() RETURNS VOID AS
'BEGIN RAISE NOTICE ''testnotice''; END;'
LANGUAGE 'plpgsql';
");
NpgsqlNotice notice = null;
NoticeEventHandler action = (sender, args) => notice = args.Notice;
Conn.Notice += action;
try
{
ExecuteNonQuery("SELECT emit_notice()::TEXT"); // See docs for CreateSleepCommand
Assert.That(notice, Is.Not.Null, "No notice was emitted");
Assert.That(notice.MessageText, Is.EqualTo("testnotice"));
Assert.That(notice.Severity, Is.EqualTo("NOTICE"));
}
finally
{
Conn.Notice -= action;
}
}
[Test, Description("Makes sure that concurrent use of the connection throws an exception")]
public void ConcurrentUse()
{
using (var cmd = new NpgsqlCommand("SELECT 1", Conn))
using (cmd.ExecuteReader())
Assert.That(() => ExecuteScalar("SELECT 1", Conn), Throws.Exception.TypeOf<InvalidOperationException>());
}
[Test]
public void NoContinuousProcessingWithSslStream()
{
using (var conn = new NpgsqlConnection(ConnectionString + ";UseSslStream=true;ContinuousProcessing=true"))
Assert.That(() => conn.Open(), Throws.Exception.TypeOf<ArgumentException>());
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/783")]
public void PersistSecurityInfoIsOn()
{
var connString = new NpgsqlConnectionStringBuilder(ConnectionString) { PersistSecurityInfo = true };
using (var conn = new NpgsqlConnection(connString))
{
var passwd = new NpgsqlConnectionStringBuilder(conn.ConnectionString).Password;
Assert.That(passwd, Is.Not.Null);
conn.Open();
Assert.That(new NpgsqlConnectionStringBuilder(conn.ConnectionString).Password, Is.EqualTo(passwd));
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/783")]
public void NoPasswordWithoutPersistSecurityInfo()
{
using (var conn = new NpgsqlConnection(ConnectionString))
{
var csb = new NpgsqlConnectionStringBuilder(conn.ConnectionString);
Assert.That(csb.PersistSecurityInfo, Is.False);
Assert.That(csb.Password, Is.Not.Null);
conn.Open();
Assert.That(new NpgsqlConnectionStringBuilder(conn.ConnectionString).Password, Is.Null);
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/743")]
[IssueLink("https://github.com/npgsql/npgsql/issues/783")]
public void Clone()
{
var connString = new NpgsqlConnectionStringBuilder(ConnectionString) { Pooling = false };
using (var conn = new NpgsqlConnection(connString))
{
ProvideClientCertificatesCallback callback1 = certificates => { };
conn.ProvideClientCertificatesCallback = callback1;
RemoteCertificateValidationCallback callback2 = (sender, certificate, chain, errors) => true;
conn.UserCertificateValidationCallback = callback2;
conn.Open();
using (var conn2 = (NpgsqlConnection) ((ICloneable) conn).Clone())
{
Assert.That(conn2.ConnectionString, Is.EqualTo(conn.ConnectionString));
Assert.That(conn2.ProvideClientCertificatesCallback, Is.SameAs(callback1));
Assert.That(conn2.UserCertificateValidationCallback, Is.SameAs(callback2));
conn2.Open();
}
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/736")]
public void ManyOpenClose()
{
// The connector's _sentRfqPrependedMessages is a byte, too many open/closes made it overflow
for (var i = 0; i < 255; i++)
{
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
}
}
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
}
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
Assert.That(ExecuteScalar("SELECT 1", conn), Is.EqualTo(1));
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/736")]
public void ManyOpenCloseWithTransaction()
{
// The connector's _sentRfqPrependedMessages is a byte, too many open/closes made it overflow
for (var i = 0; i < 255; i++)
{
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
conn.BeginTransaction();
}
}
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
Assert.That(ExecuteScalar("SELECT 1", conn), Is.EqualTo(1));
}
}
[Test]
[IssueLink("https://github.com/npgsql/npgsql/issues/736")]
public void RollbackOnCloseThenOpenClose()
{
int processId;
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
processId = conn.Connector.BackendProcessId;
conn.BeginTransaction();
ExecuteNonQuery("SELECT 1", conn);
}
// This close prepended a rollback for the next time the connector is used
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
Assert.That(conn.Connector.BackendProcessId, Is.EqualTo(processId));
}
// Make sure the prepended rollback is maintained
using (var conn = new NpgsqlConnection(ConnectionString))
{
conn.Open();
Assert.That(conn.Connector.BackendProcessId, Is.EqualTo(processId));
Assert.That(ExecuteScalar("SELECT 1", conn), Is.EqualTo(1));
}
}
[Test, Description("Tests an exception happening when sending the Terminate message while closing a ready connector")]
[IssueLink("https://github.com/npgsql/npgsql/issues/777")]
public void ExceptionDuringClose()
{
var connString = new NpgsqlConnectionStringBuilder(ConnectionString) { Pooling = false };
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
var connectorId = conn.ProcessID;
// Use another connection to kill our connector
ExecuteNonQuery($"SELECT pg_terminate_backend({connectorId})");
conn.Close();
}
}
#region GetSchema
[Test]
public void GetSchema()
{
using (NpgsqlConnection c = new NpgsqlConnection())
{
DataTable metaDataCollections = c.GetSchema();
Assert.IsTrue(metaDataCollections.Rows.Count > 0, "There should be one or more metadatacollections returned. No connectionstring is required.");
}
}
[Test]
public void GetSchemaWithDbMetaDataCollectionNames()
{
DataTable metaDataCollections = Conn.GetSchema(System.Data.Common.DbMetaDataCollectionNames.MetaDataCollections);
Assert.IsTrue(metaDataCollections.Rows.Count > 0, "There should be one or more metadatacollections returned.");
foreach (DataRow row in metaDataCollections.Rows)
{
var collectionName = (string)row["CollectionName"];
//checking this collection
if (collectionName != System.Data.Common.DbMetaDataCollectionNames.MetaDataCollections)
{
var collection = Conn.GetSchema(collectionName);
Assert.IsNotNull(collection, "Each of the advertised metadata collections should work");
}
}
}
[Test]
public void GetSchemaWithRestrictions()
{
DataTable metaDataCollections = Conn.GetSchema(System.Data.Common.DbMetaDataCollectionNames.Restrictions);
Assert.IsTrue(metaDataCollections.Rows.Count > 0, "There should be one or more Restrictions returned.");
}
[Test]
public void GetSchemaWithReservedWords()
{
DataTable metaDataCollections = Conn.GetSchema(System.Data.Common.DbMetaDataCollectionNames.ReservedWords);
Assert.IsTrue(metaDataCollections.Rows.Count > 0, "There should be one or more ReservedWords returned.");
}
#endregion
}
}