public void ShouldReturnEmptyIndexIfThereIfIndexListIsEmpty()
        {
            var vmItem   = new MeasurementVmItem();
            var expected = new Index();
            var result   = DetailsViewModel.FirstIndex(vmItem);

            Assert.AreEqual(expected, result, "Should return empty Index");
        }
        public void ShouldReturnFirstIndexItem()
        {
            var vmItem   = CreateVmItem();
            var expected = vmItem.Measurements.current.indexes.First();
            var result   = DetailsViewModel.FirstIndex(vmItem);

            Assert.AreEqual(expected, result, "Should return first index item");
        }