def test_import_csv(consumption_csv_filename):
ch = import_csv(consumption_csv_filename)
assert len(ch.natural_gas) == 1
assert len(ch.electricity) == 1
assert_allclose(ch.natural_gas[0].therms,25,rtol=RTOL,atol=ATOL)
assert_allclose(ch.electricity[0].kWh,1000,rtol=RTOL,atol=ATOL)
assert ch.natural_gas[0].estimated
assert not ch.electricity[0].estimated
assert ch.natural_gas[0].timedelta.days == 30
assert ch.electricity[0].timedelta.days == 35
