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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.Query.LinqToEntities
{
using System.Collections.Generic;
using System.Data.Entity.Infrastructure;
using System.Data.Entity.TestModels.ArubaModel;
using System.Linq;
using System.Reflection;
using Xunit;
public class MaterializationTests : FunctionalTestBase
{
[Fact]
public void Can_materialize_list_of_entity_properties()
{
using (var context = new ArubaContext())
{
var query = context.Runs.Where(r => r.Id == 1).Select(r => new List<int> { r.Id, r.RunOwner.Id });
// materializing results
var results = query.ToList();
var runId = context.Runs.Select(r => r.Id).First(r => r == 1);
var ownerId = context.Runs.Select(r => r.RunOwner.Id).First(r => r == 1);
Assert.Equal(1, results.Count);
Assert.Equal(2, results[0].Count);
Assert.Equal(runId, results[0][0]);
Assert.Equal(ownerId, results[0][1]);
}
}
[Fact]
public void Materialize_array_of_entity_properties_throws()
{
using (var context = new ArubaContext())
{
var query = context.Runs.Where(r => r.Id == 1).Select(r => new int[] { r.Id, r.RunOwner.Id });
var innerException = Assert.Throws<TargetInvocationException>(() => query.ToList())
.InnerException;
Assert.IsType<InvalidOperationException>(innerException);
innerException.ValidateMessage(
typeof(DbContext).Assembly,
"ObjectQuery_UnableToMaterializeArray",
null,
"System.Int32[]",
"System.Collections.Generic.List`1[System.Int32]");
}
}
[Fact]
public void Materializing_empty_list_throws()
{
using (var context = new ArubaContext())
{
var query = context.Runs.Select(r => new List<int> { });
Assert.Throws<NotSupportedException>(() => query.ToList()).
ValidateMessage(
typeof(DbContext).Assembly,
"ELinq_UnsupportedEnumerableType",
null,
"System.Collections.Generic.List`1");
}
}
[Fact]
public void Can_materialize_list_inside_anonymous_type()
{
using (var context = new ArubaContext())
{
var query = context.Runs.Where(r => r.Id == 1).Select(r => new { r.Id, List = new List<string> { r.Name, "a", "b" } });
var results = query.ToList();
var runId = context.Runs.Select(r => r.Id).First(r => r == 1);
var runName = context.Runs.Where(r => r.Id == 1).Select(r => r.Name).First();
Assert.Equal(1, results.Count);
Assert.Equal(runId, results[0].Id);
Assert.Equal(3, results[0].List.Count);
Assert.Equal(runName, results[0].List[0]);
Assert.Equal("a", results[0].List[1]);
Assert.Equal("b", results[0].List[2]);
}
}
[Fact]
public void Can_materialize_collection()
{
using (var context = new ArubaContext())
{
var query = context.Failures.Where(f => f.Id == 1).Select(f => f.Bugs);
var results = query.ToList();
var bugs = context.Bugs.Where(b => b.Failure.Id == 1).ToList();
Assert.Equal(1, results.Count);
Assert.Equal(bugs.Count, results[0].Count);
}
}
[Fact]
public void Can_materialize_collection_inside_anonymous_type()
{
using (var context = new ArubaContext())
{
var query = context.Failures.Where(f => f.Id == 1).Select(f => new { f.Bugs });
var results = query.ToList();
var bugs = context.Bugs.Where(b => b.Failure.Id == 1).ToList();
Assert.Equal(1, results.Count);
Assert.Equal(bugs.Count, results[0].Bugs.Count);
}
}
[Fact]
public void Can_materialize_properties_into_non_mapped_type()
{
using (var context = new ArubaContext())
{
var query = context.Owners.Where(o => o.Id == 1).Select(o => new MyNonMappedType { Id = o.Id, Name = o.FirstName });
var results = query.ToList();
var id = context.Owners.Select(o => o.Id).First(r => r == 1);
var name = context.Owners.Where(o => o.Id == 1).Select(o => o.FirstName).First();
Assert.Equal(1, results.Count);
Assert.Equal(id, results[0].Id);
Assert.Equal(name, results[0].Name);
}
}
[Fact]
public void Can_materialize_nested_anonymous_types()
{
using (var context = new ArubaContext())
{
var query = context.Owners.Where(o => o.Id == 1).Select(o => new
{
o.Id,
Name = new { First = o.FirstName, Last = o.LastName }
});
var results = query.ToList();
var id = context.Owners.Select(o => o.Id).First(r => r == 1);
var firstName = context.Owners.Where(o => o.Id == 1).Select(o => o.FirstName).First();
var lastName = context.Owners.Where(o => o.Id == 1).Select(o => o.LastName).First();
Assert.Equal(1, results.Count);
Assert.Equal(id, results[0].Id);
Assert.Equal(firstName, results[0].Name.First);
Assert.Equal(lastName, results[0].Name.Last);
}
}
[Fact]
public void Can_materialize_null_complex_type()
{
using (var context = new ArubaContext())
{
var query = context.Runs.Select(r => r.Tasks.Where(t => t.Id < 0).Select(t => t.TaskInfo).FirstOrDefault());
var results = query.ToList();
Assert.IsType<List<ArubaTaskInfo>>(results);
foreach (var result in results)
{
Assert.Null(result);
}
}
}
[Fact]
public void Materialize_DbSet_throws()
{
using (var context = new ArubaContext())
{
Assert.Throws<ArgumentException>(() => context.Runs.Select(r => context.Owners));
context.Runs.Select(r => context.Owners.AsEnumerable()).ToList();
}
}
[Fact]
public void Materialize_ObjectQuery_throws()
{
using(var context = new ArubaContext())
{
var objectContext = ((IObjectContextAdapter)context).ObjectContext;
var owners = objectContext.CreateQuery<ArubaOwner>("Owners");
Assert.Throws<InvalidOperationException>(() => context.Runs.Select(r => owners).ToList());
context.Runs.Select(r => owners.AsEnumerable()).ToList();
}
}
public class MyNonMappedType
{
public int Id { get; set; }
public string Name { get; set; }
}
}
}
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