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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.Configuration;
using System.Data.Entity.Internal;
using System.Data.Entity.Resources;
using System.Data.Entity.TestHelpers;
using Moq;
using Xunit;
public class DbConfigurationLoaderTests
{
[Fact]
public void TryLoadFromConfig_returns_null_if_config_element_is_missing_or_empty()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns((string)null);
Assert.Null(new DbConfigurationLoader().TryLoadFromConfig(mockConfig.Object));
mockConfig.Setup(m => m.ConfigurationTypeName).Returns("");
Assert.Null(new DbConfigurationLoader().TryLoadFromConfig(mockConfig.Object));
mockConfig.Setup(m => m.ConfigurationTypeName).Returns("");
Assert.Null(new DbConfigurationLoader().TryLoadFromConfig(mockConfig.Object));
}
[Fact]
public void TryLoadFromConfig_returns_InternalConfiguration_with_correct_DbConfiguration_type_instance()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns(typeof(FunctionalTestsConfiguration).AssemblyQualifiedName);
Assert.IsType<FunctionalTestsConfiguration>(new DbConfigurationLoader().TryLoadFromConfig(mockConfig.Object).Owner);
}
[Fact]
public void TryLoadFromConfig_throws_if_type_cannot_be_loaded()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns("I.Is.Not.A.Type");
var loader = new DbConfigurationLoader();
Assert.Equal(
Strings.DbConfigurationTypeNotFound("I.Is.Not.A.Type"),
Assert.Throws<InvalidOperationException>(() => loader.TryLoadFromConfig(mockConfig.Object)).Message);
}
[Fact]
public void TryLoadFromConfig_throws_if_type_does_not_extend_DbConfiguration()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns(typeof(Random).AssemblyQualifiedName);
var loader = new DbConfigurationLoader();
Assert.Equal(
Strings.CreateInstance_BadDbConfigurationType(typeof(Random).ToString(), typeof(DbConfiguration).ToString()),
Assert.Throws<InvalidOperationException>(() => loader.TryLoadFromConfig(mockConfig.Object)).Message);
}
[Fact]
public void AppConfigContainsDbConfigurationType_returns_false_if_config_element_is_missing_or_empty()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns((string)null);
Assert.False(new DbConfigurationLoader().AppConfigContainsDbConfigurationType(mockConfig.Object));
mockConfig.Setup(m => m.ConfigurationTypeName).Returns("");
Assert.False(new DbConfigurationLoader().AppConfigContainsDbConfigurationType(mockConfig.Object));
mockConfig.Setup(m => m.ConfigurationTypeName).Returns("");
Assert.False(new DbConfigurationLoader().AppConfigContainsDbConfigurationType(mockConfig.Object));
}
[Fact]
public void AppConfigContainsDbConfigurationType_returns_true_if_config_element_is_specified()
{
var mockConfig = new Mock<AppConfig>(new ConnectionStringSettingsCollection());
mockConfig.Setup(m => m.ConfigurationTypeName).Returns(typeof(FunctionalTestsConfiguration).AssemblyQualifiedName);
Assert.True(new DbConfigurationLoader().AppConfigContainsDbConfigurationType(mockConfig.Object));
}
}
}
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