val url_alcohol_test = 
  "https://raw.githubusercontent.com/fivethirtyeight/data/master/alcohol-consumption/drinks.csv"

val file_population_test = 
  "population.csv"

assert(CW6b.get_csv_page(url_alcohol_test).size == 194)

assert(CW6b.get_csv_file(file_population_test).size == 216)