Brad Wilson bradwilson

Test collections are the test grouping mechanism in xUnit.net v2. They serve two purposes:

They delineate the "parallelism" boundary; that is, tests in the same collection will not be run in parallel against each other;
They offer collection-wide fixtures through the use of ICollectionFixture<TFixtureType>.

The simplest way to use test collections is simply by name. Put two classes into the same named collection, and they can derive benefit #1 above:

[Collection("MyCollection")]
public class TestClass1

There have been significant changes in the latest alpha build of xUnit.net. Some of these changes will cause compilation errors for developers upgrading from previous alpha builds (as well as v1).

New Features for Test Authors

Support for tests in Windows 8, Windows Phone 8, and PCLs

This release has added support for writing unit tests in several new class library formats: Windows 8 class libraries, Windows Phone 8 class libraries, and Portable Class Libraries that target either of those (plus Desktop .NET 4.5). The runners that we supply can run those tests, although they are currently run in the desktop CLR. Three assemblies have been converted to PCLs as a result: xunit.abstractions.dll, xunit.assert.dll, and xunit.core.dll. The rest of the DLLs remain in their current configuration of supporting either Desktop .NET 3.5 or 4.5.

Adding support for MaxParallelThreads

The release notes are available on the xUnit.net release page.

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using Xunit.Sdk;

	namespace Xunit
	{
	public partial class Assert
	{
	/// <summary>

	Test 'YourTestNameHere' failed:
	System.ObjectDisposedException : Safe handle has been closed
	at System.Runtime.InteropServices.SafeHandle.DangerousAddRef(Boolean& success)
	at System.StubHelpers.StubHelpers.SafeHandleAddRef(SafeHandle pHandle, Boolean& success)
	at System.Security.Cryptography.Utils.HashData(SafeHashHandle hHash, Byte[] data, Int32 cbData, Int32 ibStart, Int32 cbSize)
	at System.Security.Cryptography.MD5CryptoServiceProvider.HashCore(Byte[] rgb, Int32 ibStart, Int32 cbSize)
	at System.Security.Cryptography.HashAlgorithm.ComputeHash(Byte[] buffer)

	public enum Cacheability
	{
	NoCache,
	Private,
	Public,
	}

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Web.Http;

	public static class ModelStateDictionaryExtensions
	{
	public static IEnumerable<string> ToErrors(this ModelStateDictionary dict)
	{
	return dict.OrderBy(kvp => kvp.Key)

	public struct Maybe<T>
	{
	public static readonly Maybe<T> NoValue;

	public Maybe(T value, bool hasValue = true) : this()
	{
	HasValue = hasValue;
	Value = value;
	}

	public static IEnumerable<object[]> ExpirationMethods
	{
	get
	{
	return new TheoryDataSet<Expression<Action<Cache>>>
	{
	cache => cache.Clock.UtcNow.Returns(BaseTime + cache.Duration),
	cache => cache.Expire()
	};
	}