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SqliteConnectionFactoryTest.cs
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SqliteConnectionFactoryTest.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Data;
using System.IO;
using System.Runtime.CompilerServices;
using SQLitePCL;
using Xunit;
namespace Microsoft.Data.Sqlite;
[Collection(nameof(SqliteConnectionFactoryTest))]
[CollectionDefinition(nameof(SqliteConnectionFactoryTest), DisableParallelization = true)]
public class SqliteConnectionFactoryTest : IDisposable
{
private const string FileName = "pooled.db";
private const string ConnectionString = "Data Source=" + FileName + ";Cache=Shared;Pooling=True";
[Fact]
public void Internal_connections_are_reused_after_reopen()
{
using var connection = new SqliteConnection(ConnectionString);
connection.Open();
var db = connection.Handle;
connection.Close();
Assert.Null(connection.Handle);
connection.Open();
Assert.Same(db, connection.Handle);
}
[Fact]
public void Internal_connections_are_reused_across_connections()
{
sqlite3 db;
using (var connection1 = new SqliteConnection(ConnectionString))
{
connection1.Open();
db = connection1.Handle!;
}
using var connection2 = new SqliteConnection(ConnectionString);
connection2.Open();
Assert.Same(db, connection2.Handle);
}
[Fact]
public void Internal_connections_are_not_reused_when_pooling_is_disabled()
{
using var connection = new SqliteConnection(new SqliteConnectionStringBuilder(ConnectionString) { Pooling = false }.ToString());
connection.Open();
var db = connection.Handle;
connection.Close();
connection.Open();
Assert.NotSame(db, connection.Handle);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public void Internal_connections_are_not_reused_after_clearing_pool(bool allPools)
{
using var connection = new SqliteConnection(ConnectionString);
connection.Open();
var db = connection.Handle;
connection.Close();
if (allPools)
{
SqliteConnection.ClearAllPools();
}
else
{
SqliteConnection.ClearPool(connection);
}
connection.Open();
Assert.NotSame(db, connection.Handle);
}
[Theory]
[InlineData(false)]
[InlineData(true)]
public void Internal_connections_are_not_reused_after_clearing_pool_when_open(bool allPools)
{
using var connection = new SqliteConnection(ConnectionString);
connection.Open();
var db = connection.Handle;
if (allPools)
{
SqliteConnection.ClearAllPools();
}
else
{
SqliteConnection.ClearPool(connection);
}
Assert.Same(db, connection.Handle);
connection.Close();
connection.Open();
Assert.NotSame(db, connection.Handle);
}
[Fact]
public void ReadUncommitted_doesnt_bleed_across_connections()
{
sqlite3 db;
using (var connection1 = new SqliteConnection(ConnectionString))
{
connection1.Open();
db = connection1.Handle!;
using (connection1.BeginTransaction(IsolationLevel.ReadUncommitted))
{
}
}
using var connection2 = new SqliteConnection(ConnectionString);
connection2.Open();
Assert.Same(db, connection2.Handle);
var readUncommitted = connection2.ExecuteScalar<long>("PRAGMA read_uncommitted;");
Assert.Equal(0L, readUncommitted);
}
[Fact]
public void Functions_dont_bleed_across_connections()
{
sqlite3 db;
using (var connection1 = new SqliteConnection(ConnectionString))
{
if (new Version(connection1.ServerVersion) < new Version(3, 31, 0))
{
// Skip. SQLite returns deleted functions
return;
}
connection1.CreateFunction("function1", () => 1L, isDeterministic: true);
connection1.CreateAggregate("aggregate1", 0L, x => x, isDeterministic: true);
connection1.Open();
db = connection1.Handle!;
}
using var connection2 = new SqliteConnection(ConnectionString);
connection2.Open();
Assert.Same(db, connection2.Handle);
var functions = connection2.ExecuteScalar<string>("SELECT group_concat(name) FROM pragma_function_list;")
.Split(',');
Assert.DoesNotContain("function1", functions);
Assert.DoesNotContain("aggregate1", functions);
}
[Fact(Skip = "ericsink/SQLitePCL.raw#421")]
public void Collations_dont_bleed_across_connections()
{
sqlite3 db;
using (var connection1 = new SqliteConnection(ConnectionString))
{
connection1.CreateCollation("COLLATION1", string.CompareOrdinal);
connection1.Open();
db = connection1.Handle!;
}
using var connection2 = new SqliteConnection(ConnectionString);
connection2.Open();
Assert.Same(db, connection2.Handle);
var collations = connection2.ExecuteScalar<string>("SELECT group_concat(name) FROM pragma_collation_list;")
.Split(',');
Assert.DoesNotContain("COLLATION1", collations);
}
[Fact]
public void EnableExtensions_doesnt_bleed_across_connections()
{
sqlite3 db;
SqliteException ex;
string disabledMessage;
using (var connection1 = new SqliteConnection(ConnectionString))
{
connection1.Open();
db = connection1.Handle!;
var loadExtensionOmitted = connection1.ExecuteScalar<long>(
"SELECT COUNT(*) FROM pragma_compile_options WHERE compile_options = 'OMIT_LOAD_EXTENSION';");
if (loadExtensionOmitted != 0L)
{
return;
}
ex = Assert.Throws<SqliteException>(
() => connection1.ExecuteNonQuery("SELECT load_extension('unknown');"));
disabledMessage = ex.Message;
connection1.EnableExtensions();
}
using var connection2 = new SqliteConnection(ConnectionString);
connection2.Open();
Assert.Same(db, connection2.Handle);
ex = Assert.Throws<SqliteException>(
() => connection2.ExecuteNonQuery("SELECT load_extension('unknown');"));
Assert.Equal(disabledMessage, ex.Message);
}
[Fact]
public void Clear_works_when_connection_leaked()
{
using var connection = new SqliteConnection(ConnectionString);
connection.Open();
LeakConnection();
GC.Collect();
SqliteConnection.ClearPool(connection);
[MethodImpl(MethodImplOptions.NoInlining)]
static void LeakConnection()
{
// Don't add using!
var connection = new SqliteConnection(ConnectionString);
connection.Open();
}
}
public void Dispose()
{
SqliteConnection.ClearAllPools();
File.Delete(FileName);
}
}