public async Task AcknowledgeStaleDataAsync__StaleDataRefreshed() { var awaited = false; MockedDataRefresher.Setup(_ => _.RefreshAsync(It.IsAny <IDescriptor>())) .Returns(Task.Delay(10).ContinueWith(_ => awaited = true)); await TestInstance.AcknowledgeStaleDataAsync(Descriptor); MockedDataRefresher.Verify(_ => _.RefreshAsync(Descriptor)); Assert.IsTrue(awaited); }