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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
namespace System.Data.Entity.Infrastructure
{
using System.Data.Common;
using System.Data.Entity.Core.EntityClient;
using System.Data.Entity.ModelConfiguration.Internal.UnitTests;
using System.Data.Entity.Utilities;
using System.Data.SqlClient;
using System.Linq;
using System.Reflection;
using Xunit;
#if NET40
using System.Data.Entity.Resources;
using Moq;
#endif
public class DefaultDbProviderFactoryServiceTests : TestBase
{
[Fact]
public void GetProviderFactory_throws_for_null_connection()
{
Assert.Equal(
"connection",
Assert.Throws<ArgumentNullException>(() => new DefaultDbProviderFactoryService().GetProviderFactory(null)).ParamName);
}
[Fact]
public void GetProviderFactory_for_SqlConnection_should_return_SqlClientFactory()
{
Assert.Equal(SqlClientFactory.Instance, new DefaultDbProviderFactoryService().GetProviderFactory(new SqlConnection()));
}
[Fact]
public void GetProviderFactory_for_EntityConnection_should_return_EntityProviderFactory()
{
Assert.Equal(EntityProviderFactory.Instance, new DefaultDbProviderFactoryService().GetProviderFactory(new EntityConnection()));
}
[Fact]
public void GetProviderFactory_for_generic_connection_should_return_correct_generic_factory()
{
Assert.NotNull(GenericProviderFactory<DbProviderFactory>.Instance);
Assert.Equal(
GenericProviderFactory<DbProviderFactory>.Instance,
new DefaultDbProviderFactoryService(
new ProviderRowFinder(DbProviderFactories.GetFactoryClasses().Rows.OfType<DataRow>()))
.GetProviderFactory(new GenericConnection<DbProviderFactory>()));
}
#if NET40
[Fact]
public void GetProviderFactory_throws_for_unknown_provider_on_net40()
{
var mockConnection = new Mock<DbConnection>();
mockConnection.Setup(m => m.ToString()).Returns("Disco 2000");
Assert.Equal(
Strings.ProviderNotFound("Disco 2000"),
Assert.Throws<NotSupportedException>(
() => new DefaultDbProviderFactoryService().GetProviderFactory(mockConnection.Object)).Message);
}
[Fact]
public void GetProviderFactory_caches_factory_instances_on_net40()
{
var mockFinder = new Mock<ProviderRowFinder>(null)
{
CallBase = true
};
var service = new DefaultDbProviderFactoryService(mockFinder.Object);
Assert.Equal(SqlClientFactory.Instance, service.GetProviderFactory(new SqlConnection()));
mockFinder.Verify(m => m.FindRow(It.IsAny<Type>(), It.IsAny<Func<DataRow, bool>>()), Times.Once());
Assert.Equal(SqlClientFactory.Instance, service.GetProviderFactory(new SqlConnection()));
mockFinder.Verify(m => m.FindRow(It.IsAny<Type>(), It.IsAny<Func<DataRow, bool>>()), Times.Once()); // Finder not called again
}
#endif
[Fact]
public void GetProviderFactory_returns_exact_connection_type_match_in_same_assembly()
{
var rows = new[]
{
CreateProviderRow("Row1", "Row.1", _weakProviderType2.AssemblyQualifiedName),
CreateProviderRow("Row2", "Row.2", typeof(FakeProviderFactory2).AssemblyQualifiedName),
CreateProviderRow("Row3", "Row.3", _weakProviderType1.AssemblyQualifiedName),
CreateProviderRow("Row4", "Row.4", typeof(FakeSqlProviderFactory).AssemblyQualifiedName),
};
Assert.Same(
FakeSqlProviderFactory.Instance,
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows)).GetProviderFactory(new FakeSqlConnection()));
}
[Fact]
public void GetProviderFactory_returns_exact_connection_type_match_in_different_assembly()
{
var rows = new[]
{
CreateProviderRow("Row1", "Row.1", _weakProviderType2.AssemblyQualifiedName),
CreateProviderRow("Row2", "Row.2", typeof(FakeProviderFactory2).AssemblyQualifiedName),
CreateProviderRow("Row3", "Row.3", _weakProviderType1.AssemblyQualifiedName),
};
Assert.Same(
GetFactoryInstance(_weakProviderType1),
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows))
.GetProviderFactory(new FakeSqlConnection("2008", GetFactoryInstance(_weakProviderType1))));
}
[Fact]
public void GetProviderFactory_returns_derived_connection_type_match_in_same_assembly()
{
var rows = new[]
{
CreateProviderRow("Row1", "Row.1", _weakProviderType2.AssemblyQualifiedName),
CreateProviderRow("Row2", "Row.2", typeof(FakeProviderFactory2).AssemblyQualifiedName),
};
Assert.Same(
FakeProviderFactory2.Instance,
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows))
.GetProviderFactory(new FakeSqlConnection("2008", FakeProviderFactory2.Instance)));
}
[Fact]
public void GetProviderFactory_returns_derived_connection_type_match_in_different_assembly()
{
var rows = new[]
{
CreateProviderRow("Row1", "Row.1", _weakProviderType2.AssemblyQualifiedName),
};
Assert.Same(
GetFactoryInstance(_weakProviderType2),
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows))
.GetProviderFactory(new FakeSqlConnection("2008", GetFactoryInstance(_weakProviderType2))));
}
[Fact]
public void GetProviderFactory_returns_provider_in_weakly_named_assembly_without_version_or_key_in_name()
{
var rows = new[]
{
CreateProviderRow("ProviderFactory", "Provider.Factory", "WeakProviderFactory, ProviderAssembly1"),
};
Assert.Same(
GetFactoryInstance(_weakProviderType1),
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows))
.GetProviderFactory(new FakeSqlConnection("2008", GetFactoryInstance(_weakProviderType1))));
}
[Fact]
public void GetProviderFactory_returns_provider_in_weakly_named_assembly_with_non_standard_spacing_in_name()
{
var rows = new[]
{
CreateProviderRow(
"ProviderFactory", "Provider.Factory",
"WeakProviderFactory,ProviderAssembly1, Version=0.0.0.0, Culture=neutral,PublicKeyToken=null"),
};
Assert.Same(
GetFactoryInstance(_weakProviderType1),
new DefaultDbProviderFactoryService(new ProviderRowFinder(rows))
.GetProviderFactory(new FakeSqlConnection("2008", GetFactoryInstance(_weakProviderType1))));
}
private static readonly Type _weakProviderType1 = CreateWeakProviderType(typeof(FakeProviderBase1), "ProviderAssembly1");
private static readonly Type _weakProviderType2 = CreateWeakProviderType(typeof(FakeProviderBase2), "ProviderAssembly2");
private static Type CreateWeakProviderType(Type baseProviderType, string assemblyName)
{
var assembly = new DynamicAssembly();
var dynamicType =
assembly.DynamicStructuralType("WeakProviderFactory").HasBaseClass(baseProviderType);
dynamicType.CtorAccess = MemberAccess.Public;
dynamicType.Field("Instance").HasType(dynamicType).IsStatic().IsInstance();
var compiledAssembly = assembly.Compile(new AssemblyName(assemblyName));
// We need this so that Type.GetType() used in DbProviderFactories.GetFactory will work for
// the dynamic assembly. In other words, this is only needed for the test code to work.
AppDomain.CurrentDomain.AssemblyResolve +=
(sender, args) => args.Name.StartsWith(assemblyName) ? compiledAssembly : null;
return assembly.GetType("WeakProviderFactory");
}
private static DbProviderFactory GetFactoryInstance(Type factoryType)
{
return (DbProviderFactory)factoryType.GetField("Instance").GetValue(null);
}
public class FakeProviderBase1 : DbProviderFactory
{
public override DbConnection CreateConnection()
{
return new FakeSqlConnection();
}
}
public class FakeProviderBase2 : DbProviderFactory
{
public override DbConnection CreateConnection()
{
return new DerivedFakeSqlConnection();
}
}
public class FakeProviderFactory2 : DbProviderFactory
{
public static readonly FakeProviderFactory2 Instance = new FakeProviderFactory2();
public override DbConnection CreateConnection()
{
return new DerivedFakeSqlConnection();
}
}
public class DerivedFakeSqlConnection : FakeSqlConnection
{
}
}
}
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