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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.Internal
{
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Data.Entity.Internal.ConfigFile;
using System.Data.Entity.Resources;
using Moq;
using Xunit;
public class InitializerConfigTests
{
[Fact]
public void TryGetInitializer_returns_null_when_no_initializer_is_registered_for_context()
{
Assert.Null(
new InitializerConfig(new EntityFrameworkSection(), new KeyValueConfigurationCollection())
.TryGetInitializer(typeof(DbContext)));
}
[Fact]
public void TryGetInitializer_returns_null_when_context_section_exists_but_no_initializer_is_registered()
{
var contextElements = new List<ContextElement>
{
new ContextElement()
};
var mockContextCollection = new Mock<ContextCollection>();
mockContextCollection.As<IEnumerable>().Setup(m => m.GetEnumerator()).Returns(contextElements.GetEnumerator());
var mockEfSection = new Mock<EntityFrameworkSection>();
mockEfSection.Setup(m => m.Contexts).Returns(mockContextCollection.Object);
Assert.Null(
new InitializerConfig(mockEfSection.Object, new KeyValueConfigurationCollection())
.TryGetInitializer(typeof(DbContext)));
}
[Fact]
public void TryGetInitializer_returns_NullInitializer_when_initializer_is_disabled_in_context_section()
{
Assert.IsType<NullDatabaseInitializer<FakeContext>>(
new InitializerConfig(
CreateEfSection(typeof(FakeContext).AssemblyQualifiedName, null, initializerDisabled: true),
new KeyValueConfigurationCollection())
.TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_returns_initializer_registered_in_config_section()
{
Assert.IsType<FakeInitializer<FakeContext>>(
new InitializerConfig(
CreateEfSection(
typeof(FakeContext).AssemblyQualifiedName,
typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName,
initializerDisabled: false),
new KeyValueConfigurationCollection()).TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_returns_initializer_created_with_given_parameters_when_registered_in_config_section()
{
var initializer = new InitializerConfig(
CreateEfSection(
typeof(FakeContext).AssemblyQualifiedName,
typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName,
initializerDisabled: false,
initalizerParams: new object[] { "Wiggo", 1 }),
new KeyValueConfigurationCollection()).TryGetInitializer(typeof(FakeContext));
Assert.IsType<FakeInitializer<FakeContext>>(initializer);
Assert.Equal("Wiggo", ((FakeInitializer<FakeContext>)initializer).Hero);
Assert.Equal(1, ((FakeInitializer<FakeContext>)initializer).Wheredecome);
}
[Fact]
public void TryGetInitializer_returns_NullInitializer_when_initializer_is_disabled_in_app_settings_section()
{
Assert.IsType<NullDatabaseInitializer<FakeContext>>(
new InitializerConfig(
new EntityFrameworkSection(), new KeyValueConfigurationCollection
{
{
"DatabaseInitializerForType " + typeof(FakeContext).AssemblyQualifiedName,
"Disabled"
}
})
.TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_returns_NullInitializer_when_initializer_is_disabled_with_empty_string_in_app_settings_section()
{
Assert.IsType<NullDatabaseInitializer<FakeContext>>(
new InitializerConfig(
new EntityFrameworkSection(), new KeyValueConfigurationCollection
{
{ "DatabaseInitializerForType " + typeof(FakeContext).AssemblyQualifiedName, "" }
})
.TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_returns_initializer_registered_in_app_settings_section()
{
Assert.IsType<FakeInitializer<FakeContext>>(
new InitializerConfig(
new EntityFrameworkSection(), new KeyValueConfigurationCollection
{
{
"DatabaseInitializerForType " + typeof(FakeContext).AssemblyQualifiedName,
typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName
}
})
.TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_returns_initializer_set_in_context_section_in_preference_to_app_settings_section()
{
Assert.IsType<FakeInitializer<FakeContext>>(
new InitializerConfig(
CreateEfSection(
typeof(FakeContext).AssemblyQualifiedName,
typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName,
initializerDisabled: false),
new KeyValueConfigurationCollection
{
{
"DatabaseInitializerForType " + typeof(FakeContext).AssemblyQualifiedName,
"Not.Me.Please"
}
}).TryGetInitializer(typeof(FakeContext)));
}
[Fact]
public void TryGetInitializer_throws_if_bad_context_type_is_registered_in_context_section()
{
TestBadType("A.Bad.Context.Type", typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName, initializerDisabled: false);
}
[Fact]
public void TryGetInitializer_throws_if_bad_context_type_for_disabled_initializer_is_registered_in_context_section()
{
TestBadType("A.Bad.Context.Type", typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName, initializerDisabled: true);
}
[Fact]
public void TryGetInitializer_throws_if_bad_initializer_type_is_registered_in_context_section()
{
TestBadType(typeof(FakeContext).AssemblyQualifiedName, "A.Bad.Initializer.Type", initializerDisabled: false);
}
private static void TestBadType(string contextTypeName, string initializerTypeName, bool initializerDisabled)
{
var initializerConfig = new InitializerConfig(
CreateEfSection(contextTypeName, initializerTypeName, initializerDisabled),
new KeyValueConfigurationCollection());
var exception = Assert.Throws<InvalidOperationException>(() => initializerConfig.TryGetInitializer(typeof(FakeContext)));
Assert.Equal(
Strings.Database_InitializeFromConfigFailed(
initializerDisabled ? "Disabled" : initializerTypeName,
contextTypeName), exception.Message);
Assert.IsType<TypeLoadException>(exception.InnerException);
}
[Fact]
public void TryGetInitializer_throws_if_bad_context_type_is_registered_in_app_settings_section()
{
TestBadTypeLegacy("A.Bad.Context.Type", typeof(FakeInitializer<FakeContext>).AssemblyQualifiedName, initializerDisabled: false);
}
[Fact]
public void TryGetInitializer_throws_if_bad_context_type_for_disabled_initializer_is_registered_in_app_settings_section()
{
TestBadTypeLegacy("A.Bad.Context.Type", "Disabled", initializerDisabled: true);
}
[Fact]
public void
TryGetInitializer_throws_if_bad_context_type_for_disabled_initializer_by_empty_string_is_registered_in_app_settings_section()
{
TestBadTypeLegacy("A.Bad.Context.Type", "", initializerDisabled: true);
}
[Fact]
public void TryGetInitializer_throws_if_bad_initializer_type_is_registered_in_app_settings_section()
{
TestBadTypeLegacy(typeof(FakeContext).AssemblyQualifiedName, "A.Bad.Initializer.Type", initializerDisabled: false);
}
private static void TestBadTypeLegacy(string contextTypeName, string configValue, bool initializerDisabled)
{
var configurationCollection = new KeyValueConfigurationCollection
{
{ "DatabaseInitializerForType " + contextTypeName, configValue }
};
var initializerConfig = new InitializerConfig(new EntityFrameworkSection(), configurationCollection);
var exception = Assert.Throws<InvalidOperationException>(() => initializerConfig.TryGetInitializer(typeof(FakeContext)));
Assert.Equal(
Strings.Database_InitializeFromLegacyConfigFailed(
initializerDisabled ? "Disabled" : configValue,
contextTypeName), exception.Message);
Assert.IsType<TypeLoadException>(exception.InnerException);
}
[Fact]
public void TryGetInitializer_throws_if_null_or_empty_context_type_is_registered_in_app_settings_section()
{
var configurationCollection = new KeyValueConfigurationCollection
{
{ "DatabaseInitializerForType ", "Disabled" }
};
var initializerConfig = new InitializerConfig(new EntityFrameworkSection(), configurationCollection);
Assert.Equal(
Strings.Database_BadLegacyInitializerEntry("DatabaseInitializerForType ", "Disabled"),
Assert.Throws<InvalidOperationException>(() => initializerConfig.TryGetInitializer(typeof(FakeContext))).Message);
}
private static EntityFrameworkSection CreateEfSection(
string contextTypeName, string initializerTypeName, bool initializerDisabled, object[] initalizerParams = null)
{
var mockParameterCollection = new Mock<ParameterCollection>();
mockParameterCollection.Setup(m => m.GetTypedParameterValues()).Returns(initalizerParams);
var mockDatabaseInitializerElement = new Mock<DatabaseInitializerElement>();
mockDatabaseInitializerElement.Setup(m => m.InitializerTypeName).Returns(initializerTypeName);
mockDatabaseInitializerElement.Setup(m => m.Parameters).Returns(mockParameterCollection.Object);
var mockContextElement = new Mock<ContextElement>();
mockContextElement.Setup(m => m.IsDatabaseInitializationDisabled).Returns(initializerDisabled);
mockContextElement.Setup(m => m.ContextTypeName).Returns(contextTypeName);
mockContextElement.Setup(m => m.DatabaseInitializer).Returns(mockDatabaseInitializerElement.Object);
var mockContextCollection = new Mock<ContextCollection>();
mockContextCollection.As<IEnumerable>().Setup(m => m.GetEnumerator()).Returns(
new List<ContextElement>
{
mockContextElement.Object
}.GetEnumerator());
var mockEfSection = new Mock<EntityFrameworkSection>();
mockEfSection.Setup(m => m.Contexts).Returns(mockContextCollection.Object);
return mockEfSection.Object;
}
public class FakeContext : DbContext
{
}
public class FakeInitializer<TContext> : IDatabaseInitializer<TContext>
where TContext : DbContext
{
public FakeInitializer()
{
}
public FakeInitializer(string hero, int wheredecome)
{
Hero = hero;
Wheredecome = wheredecome;
}
public string Hero { get; set; }
public int Wheredecome { get; set; }
public void InitializeDatabase(TContext context)
{
}
}
}
}
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