public void ReadAll_GetsData()
        {
            // initial data workbook has 4492 records
            var data = PrecipitationData.ReadAll("data.xlsx");

            Assert.IsNotNull(data, "data != null");
            // Current version of data may have more results
            Assert.GreaterOrEqual(data.Count, 4492, "data.Count < 4492");
            Console.WriteLine("Has {0} results, expected at least 4492.", data.Count);
        }
        public void ReadAll_WithInvalidPath()
        {
            var data = PrecipitationData.ReadAll("invalid.xlsx");

            Assert.IsNull(data);
        }