Switching the LinkProvider with Sitecore.FakeDb, AutoFixture, xUnit and NSubstitute

SwitchingLinkProviderSample.cs

namespace FakeDbSamples
{
  using NSubstitute;
  using Ploeh.AutoFixture;
  using Ploeh.AutoFixture.AutoNSubstitute;
  using Ploeh.AutoFixture.Xunit2;
  using Sitecore.Data.Items;
  using Sitecore.FakeDb.AutoFixture;
  using Sitecore.Links;
  using Xunit;

  // NuGet packages required:
  // PM> Install-Package xunit
  // PM> Install-Package NSubstitute
  // PM> Install-Package AutoFixture.Xunit2
  // PM> Install-Package AutoFixture.AutoNSubstitute
  // PM> Install-Package Sitecore.FakeDb.AutoFixture
  public class SwitchingLinkProviderSample
  {
    [Theory, DefaultAutoData]
    public void SwitchLinkProvider([Substitute]LinkProvider provider,
      Item item, [Modest]UrlOptions options)
    {
      provider.GetItemUrl(item, options).Returns("http://mysite.com/myitem");
      using (new Sitecore.FakeDb.Links.LinkProviderSwitcher(provider))
      {
        Assert.Equal("http://mysite.com/myitem", LinkManager.GetItemUrl(item, options));
      }
    }

    private class DefaultAutoDataAttribute : AutoDataAttribute
    {
      public DefaultAutoDataAttribute()
        : base(new Fixture()
          .Customize(new AutoNSubstituteCustomization())
          .Customize(new AutoDbCustomization()))
      {
      }
    }
  }
}