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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NET40
namespace System.Data.Entity.EntityClient
{
using System.Collections.Generic;
using System.Data.Entity.Core.EntityClient;
using System.Threading.Tasks;
using SimpleModel;
using Xunit;
public class AsyncScenarios : FunctionalTestBase
{
#region Infrastructure/setup
public AsyncScenarios()
{
CreateMetadataFilesForSimpleModel();
}
#endregion
[Fact]
public void Async_query_returns_same_as_as_sync()
{
var query = @"
SELECT VALUE p
FROM CodeFirstContainer.Products AS p
WHERE p.ID < 5
ORDER BY p.ID";
var listSync = Query(SimpleModelEntityConnectionString, query);
var listAsync = QueryAsync(SimpleModelEntityConnectionString, query).Result;
Assert.Equal(listSync, listAsync, new ProductEqualityComparer());
}
[Fact]
public void Async_scalar_query_returns_same_as_as_sync()
{
var query = @"
COUNT(
SELECT VALUE p.ID
FROM CodeFirstContainer.Products AS p
WHERE p.ID < 5)";
var scalarSync = QueryScalar(SimpleModelEntityConnectionString, query);
var scalarAsync = QueryScalarAsync(SimpleModelEntityConnectionString, query).Result;
Assert.Equal(scalarSync, scalarAsync);
}
[Fact]
public void Async_nonquery_returns_same_as_as_sync()
{
var query = @"SELECT VALUE p FROM CodeFirstContainer.Products AS p";
var listSync = NonQuery(SimpleModelEntityConnectionString, query);
var listAsync = NonQueryAsync(SimpleModelEntityConnectionString, query).Result;
Assert.Equal(listSync, listAsync);
}
private async Task<List<Product>> QueryAsync(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
await connection.OpenAsync();
var command = new EntityCommand(commandString, connection);
var reader = command.ExecuteReaderAsync(CommandBehavior.SequentialAccess).Result;
var list = new List<Product>();
do
{
while (await reader.ReadAsync())
{
var values = new List<object>();
for (var i = 0; i < reader.FieldCount; i++)
{
values.Add(await reader.GetFieldValueAsync<object>(i));
}
list.Add(CreateProduct(values));
}
}
while (await reader.NextResultAsync());
connection.Close();
return list;
}
private List<Product> Query(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
connection.Open();
var command = new EntityCommand(commandString, connection);
var reader = command.ExecuteReader(CommandBehavior.SequentialAccess);
var list = new List<Product>();
do
{
while (reader.Read())
{
var values = new List<object>();
for (var i = 0; i < reader.FieldCount; i++)
{
values.Add(reader.GetFieldValue<object>(i));
}
list.Add(CreateProduct(values));
}
}
while (reader.NextResult());
connection.Close();
return list;
}
private Product CreateProduct(List<object> values)
{
var product = new Product();
product.Id = (int)values[0];
product.CategoryId = (string)values[1];
product.Name = (string)values[2];
return product;
}
private async Task<object> QueryScalarAsync(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
await connection.OpenAsync();
var command = new EntityCommand(commandString, connection);
var result = await command.ExecuteScalarAsync();
connection.Close();
return result;
}
private object QueryScalar(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
connection.Open();
var command = new EntityCommand(commandString, connection);
var result = command.ExecuteScalar();
connection.Close();
return result;
}
private async Task<object> NonQueryAsync(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
await connection.OpenAsync();
var command = new EntityCommand(commandString, connection);
var result = await command.ExecuteNonQueryAsync();
connection.Close();
return result;
}
private object NonQuery(string connectionString, string commandString)
{
var connection = new EntityConnection(connectionString);
connection.Open();
var command = new EntityCommand(commandString, connection);
var result = command.ExecuteNonQuery();
connection.Close();
return result;
}
private class ProductEqualityComparer : IEqualityComparer<Product>
{
public bool Equals(Product x, Product y)
{
if (x == null)
{
return y == null;
}
if (y == null)
{
return false;
}
return x.Id == y.Id &&
x.Name == y.Name &&
x.CategoryId == y.CategoryId;
}
public int GetHashCode(Product obj)
{
throw new NotImplementedException();
}
}
}
}
#endif
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