public async Task BuildCollectionAsync__ItemsBuildUsingRegisteredBuilder() { var collection = new List <IData>() { new Mock <IData>().Object, new Mock <IData>().Object }; TestInstance.RegisterCollection(collection, Descriptor, DataBuilder); await TestInstance.BuildCollectionAsync(collection); foreach (var item in collection) { MockedDataBuilder.Verify(_ => _.DoWorkAsync(item)); } }