private void Verify_DbContext_construction_for_SQLCE(DbContextConstructorArgumentType ctorArguments)
{
// Act
using (
var context = CreateContext<SimpleModelContext>(ctorArguments,
providerName: "System.Data.SqlServerCe.4.0"))
{
// Assert
Assert.NotNull(context.Products);
Assert.NotNull(context.Categories);
context.Assert<Product>().IsInModel();
context.Assert<Category>().IsInModel();
Assert.Equal(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "SimpleModel.SimpleModelContext.sdf"),
context.Database.Connection.Database);
}
}
private void DbContext_disposal_behavior_wrt_to_object_context_and_connection(
DbContextConstructorArgumentType ctorArguments)
{
ObjectContext objectContext = null;
DbConnection storeConnection = null;
using (
var context =
CreateContext <SimpleModelContext>(ctorArguments, providerName: "System.Data.SqlServerCe.4.0"))
{
// Arrange
var product = context.Products.Find(1);
Assert.NotNull(product);
objectContext = GetObjectContext(context);
storeConnection = context.Database.Connection;
}
// Assert
if (ctorArguments != DbContextConstructorArgumentType.ObjectContext)
{
// Assert object context is disposed
Assert.Throws <ObjectDisposedException>(() => objectContext.SaveChanges()).ValidateMessage(
"ObjectContext_ObjectDisposed");
}
if (ctorArguments.Equals(DbContextConstructorArgumentType.Connection)
||
ctorArguments.Equals(DbContextConstructorArgumentType.ConnectionAndDbCompiledModel))
{
// Assert that connection is closed but not disposed
Assert.True(
storeConnection.State == ConnectionState.Closed &&
!storeConnection.ConnectionString.Equals(string.Empty));
}
else
{
// Assert connection is disposed
Assert.True(
storeConnection.State == ConnectionState.Closed &&
storeConnection.ConnectionString.Equals(string.Empty));
}
}
private void Verify_DbContext_construction_for_SQLCE(DbContextConstructorArgumentType ctorArguments)
{
// Act
using (
var context = CreateContext <SimpleModelContext>(
ctorArguments,
providerName: "System.Data.SqlServerCe.4.0"))
{
// Assert
Assert.NotNull(context.Products);
Assert.NotNull(context.Categories);
context.Assert <Product>().IsInModel();
context.Assert <Category>().IsInModel();
Assert.Equal(
Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "SimpleModel.SimpleModelContext.sdf"),
context.Database.Connection.Database);
}
}
private void DbContext_disposal_behavior_wrt_to_object_context_and_connection(
DbContextConstructorArgumentType ctorArguments)
{
ObjectContext objectContext = null;
DbConnection storeConnection = null;
using (
var context =
CreateContext<SimpleModelContext>(ctorArguments, providerName: "System.Data.SqlServerCe.4.0"))
{
// Arrange
var product = context.Products.Find(1);
Assert.NotNull(product);
objectContext = GetObjectContext(context);
storeConnection = context.Database.Connection;
}
// Assert
if (ctorArguments != DbContextConstructorArgumentType.ObjectContext)
{
// Assert object context is disposed
Assert.Throws<ObjectDisposedException>(() => objectContext.SaveChanges()).ValidateMessage(
"ObjectContext_ObjectDisposed");
}
if (ctorArguments.Equals(DbContextConstructorArgumentType.Connection)
||
ctorArguments.Equals(DbContextConstructorArgumentType.ConnectionAndDbCompiledModel))
{
// Assert that connection is closed but not disposed
Assert.True(
storeConnection.State == ConnectionState.Closed &&
!storeConnection.ConnectionString.Equals(string.Empty));
}
else
{
// Assert connection is disposed
Assert.True(
storeConnection.State == ConnectionState.Closed &&
storeConnection.ConnectionString.Equals(string.Empty));
}
}
protected static TContext CreateContext <TContext>(
DbContextConstructorArgumentType arguments,
string providerName = "System.Data.SqlClient")
where TContext : DbContext
{
DbConnection connection = null;
if (arguments == DbContextConstructorArgumentType.Connection
||
arguments == DbContextConstructorArgumentType.ConnectionAndDbCompiledModel)
{
if (providerName == "System.Data.SqlClient")
{
connection = SimpleConnection <TContext>();
}
else if (providerName == "System.Data.SqlServerCe.4.0")
{
connection = SimpleCeConnection <TContext>();
}
else
{
throw new ArgumentException("Invalid provider specified, " + providerName);
}
}
string connectionString = null;
if (arguments == DbContextConstructorArgumentType.ConnectionString
||
arguments == DbContextConstructorArgumentType.ConnectionStringAndDbCompiledModel)
{
if (providerName == "System.Data.SqlClient")
{
connectionString = SimpleConnectionString <TContext>();
}
else if (providerName == "System.Data.SqlServerCe.4.0")
{
connectionString = SimpleCeConnectionString <TContext>();
}
else
{
throw new ArgumentException("Invalid provider specified, " + providerName);
}
}
var providerInfo
= (providerName == "System.Data.SqlServerCe.4.0")
? ProviderRegistry.SqlCe4_ProviderInfo
: ProviderRegistry.Sql2008_ProviderInfo;
TContext context = null;
switch (arguments)
{
case DbContextConstructorArgumentType.Parameterless:
context = (TContext)Activator.CreateInstance(typeof(TContext));
break;
case DbContextConstructorArgumentType.DbCompiledModel:
context =
(TContext)
Activator.CreateInstance(
typeof(TContext),
SimpleModelContext.CreateBuilder().Build(providerInfo).Compile());
break;
case DbContextConstructorArgumentType.Connection:
context = (TContext)Activator.CreateInstance(typeof(TContext), connection, false);
break;
case DbContextConstructorArgumentType.ConnectionString:
context = (TContext)Activator.CreateInstance(typeof(TContext), connectionString);
break;
case DbContextConstructorArgumentType.ConnectionAndDbCompiledModel:
context =
(TContext)
Activator.CreateInstance(
typeof(TContext), connection,
SimpleModelContext.CreateBuilder().Build(connection).Compile(), false);
break;
case DbContextConstructorArgumentType.ConnectionStringAndDbCompiledModel:
context =
(TContext)
Activator.CreateInstance(
typeof(TContext), connectionString,
SimpleModelContext.CreateBuilder().Build(providerInfo).Compile());
break;
default:
throw new ArgumentException("Invalid DbContext constructor arguments " + arguments);
}
return(context);
}
