Adding DbItem under media library with FakeDb

Question

When using FakeDb, and I set the full path of a DbItem to go under the media library, the path gets changed to the /sitecore/content/home/image-item.

    //Method starts here
    public void MediaItemPath()
    {
        Sitecore.Data.ID mediaItemId = Sitecore.Data.ID.NewID;

        // create some media item. Location, fields and template are not important
        using (Sitecore.FakeDb.Db db = new Sitecore.FakeDb.Db())
        {
            var mediaFakeItem = new Sitecore.FakeDb.DbItem("my-image", mediaItemId);
            mediaFakeItem.FullPath = "/sitecore/media library/my-image";
            db.Add(mediaFakeItem);
            Sitecore.Data.Items.Item mediaItem = db.GetItem(mediaItemId);

            Assert.AreEqual("/sitecore/media library/my-image", mediaFakeItem.FullPath);

        }
    }

How can I add an item to the media library?

Answer 1

The API is not quite obvious here. By default, all the items are added to the content. If you need to add an item to the Media Library, you should set the fakeItem.ParentID property:

    var mediaFakeItem = new DbItem("my-image")
    {
      ParentID = Sitecore.ItemIDs.MediaLibraryRoot
    };

Since DbItem has got mutable ParentID and FullPath properties, it's quite challenging to keep them in sync (e.g. when you change the FullPath only). I created a FakeDb issue to address it (if possible without introducing breaking changes).

Answer 2

Please make sure you have media config in App.config

<mediaLibrary>
      <!-- MEDIA PROVIDER -->
      <mediaProvider type="Sitecore.FakeDb.Resources.Media.FakeMediaProvider, Sitecore.FakeDb" />
    </mediaLibrary>

Also try this below code :

public void HowToMockMediaItemProvider()
    {
      const string MyImageUrl = "~/media/myimage.ashx";
      Sitecore.Data.ID mediaItemId = Sitecore.Data.ID.NewID;

      // create some media item. Location, fields and template are not important
      using (Sitecore.FakeDb.Db db = new Sitecore.FakeDb.Db
      {
        new Sitecore.FakeDb.DbItem("my-image", mediaItemId)
      })
      {
        Sitecore.Data.Items.Item mediaItem = db.GetItem(mediaItemId);

        // create media provider mock and configure behaviour
        Sitecore.Resources.Media.MediaProvider mediaProvider =
          NSubstitute.Substitute.For<Sitecore.Resources.Media.MediaProvider>();

        mediaProvider
          .GetMediaUrl(Arg.Is<Sitecore.Data.Items.MediaItem>(i => i.ID == mediaItemId))
          .Returns(MyImageUrl);

        // substitute the original provider with the mocked one
        using (new Sitecore.FakeDb.Resources.Media.MediaProviderSwitcher(mediaProvider))
        {
          string mediaUrl = Sitecore.Resources.Media.MediaManager.GetMediaUrl(mediaItem);
          Xunit.Assert.Equal(MyImageUrl, mediaUrl);
        }
      }
    }

Source : https://github.com/sergeyshushlyapin/Sitecore.FakeDb/wiki/Media