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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.Config
{
using System.Data.Entity.Resources;
using System.Data.Entity.TestHelpers;
using Moq;
using Xunit;
public class DbConfigurationFinderTests
{
private static readonly Type _normalConfigType = new Mock<DbConfiguration>().Object.GetType();
public class TryFindConfigurationType
{
[Fact]
public void TryFindConfigurationType_returns_the_configuration_pointed_to_by_the_DbConfigurationTypeAttribute_if_found()
{
Assert.Same(
typeof(FunctionalTestsConfiguration),
new DbConfigurationFinder().TryFindConfigurationType(
typeof(FakeContextWithAttribute),
new Type[0]));
}
[Fact]
public void TryFindConfigurationType_throws_the_type_returned_by_DbConfigurationTypeAttribute_is_not_a_DbConfiguration()
{
Assert.Equal(
Strings.CreateInstance_BadDbConfigurationType(typeof(Random).ToString(), typeof(DbConfiguration).ToString()),
Assert.Throws<InvalidOperationException>(
() => new DbConfigurationFinder().TryFindConfigurationType(
typeof(FakeContextWithBadAttribute))).Message);
}
[Fact]
public void TryFindConfigurationType_throws_if_types_list_contains_more_than_one_normal_DbConfigurations()
{
Assert.Equal(
Strings.MultipleConfigsInAssembly(_normalConfigType.Assembly, typeof(DbConfiguration).Name),
Assert.Throws<InvalidOperationException>(
() => new DbConfigurationFinder().TryFindConfigurationType(
typeof(DbContext),
new[] { typeof(object), _normalConfigType, _normalConfigType })).Message);
}
[Fact]
public void TryFindConfigurationType_returns_the_normal_DbConfiguration_if_found()
{
Assert.Same(
_normalConfigType,
new DbConfigurationFinder().TryFindConfigurationType(
typeof(DbContext),
new[] { typeof(object), _normalConfigType, typeof(object) }));
}
[Fact]
public void TryFindConfigurationType_returns_null_if_no_DbConfiguration_is_found()
{
Assert.Null(
new DbConfigurationFinder().TryFindConfigurationType(typeof(DbContext), new[] { typeof(object), typeof(object) }));
}
[Fact]
public void TryFindConfigurationType_excludes_generic_types()
{
Assert.Null(
new DbConfigurationFinder().TryFindConfigurationType(typeof(DbContext), new[] { typeof(GenericConfiguration<>) }));
}
[Fact]
public void TryFindConfigurationType_excludes_abstract_types()
{
Assert.Null(
new DbConfigurationFinder().TryFindConfigurationType(typeof(DbContext), new[] { typeof(AbstractConfiguration) }));
}
}
public class TryCreateConfiguration
{
[Fact]
public void TryCreateConfiguration_returns_null_if_TryFindConfigurationType_returns_null()
{
Assert.Null(new DbConfigurationFinder().TryCreateConfiguration(typeof(DbContext), new[] { typeof(object), typeof(object) }));
}
[Fact]
public void TryCreateConfiguration_creates_instance_of_type_returned_by_TryFindConfigurationType()
{
Assert.IsType<FunctionalTestsConfiguration>(
new DbConfigurationFinder().TryCreateConfiguration(typeof(DbContext), new[] { typeof(FunctionalTestsConfiguration) }).
Owner);
}
[Fact]
public void TryCreateConfiguration_creates_instance_of_type_specified_by_DbConfigurationTypeAttribute()
{
Assert.IsType<FunctionalTestsConfiguration>(
new DbConfigurationFinder().TryCreateConfiguration(typeof(FakeContextWithAttribute)).Owner);
}
}
public abstract class AbstractConfiguration : DbConfiguration
{
}
public class GenericConfiguration<T> : DbConfiguration
{
}
[DbConfigurationType(typeof(FunctionalTestsConfiguration))]
public class FakeContextWithAttribute : DbContext
{
}
[DbConfigurationType(typeof(Random))]
public class FakeContextWithBadAttribute : DbContext
{
}
}
}
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