public void GetTotalAnnotatedTime_NoSegments_ReturnsZero()
{
_collection.GetTranscriptionTier().Segments.Clear();
_collection.GetFreeTranslationTier().Segments.Clear();
_collection.GetTimeTier().Segments.Clear();
Assert.AreEqual(TimeSpan.Zero, _collection.GetTotalAnnotatedTime(TextAnnotationType.Transcription));
Assert.AreEqual(TimeSpan.Zero, _collection.GetTotalAnnotatedTime(TextAnnotationType.Translation));
}