public AssetFolderGrainTests() { A.CallTo(() => assetQuery.FindAssetFolderAsync(parentId)) .Returns(new List <IAssetFolderEntity> { A.Fake <IAssetFolderEntity>() }); sut = new AssetFolderGrain(Store, assetQuery, limit, A.Dummy <ISemanticLog>()); sut.ActivateAsync(Id).Wait(); }