def test_plot_income(self):
'''Plot some incomes for years'''
directory, filename = os.path.split(os.path.realpath(__file__))
idc = IncomeDataController(os.path.join(directory, 'countries.csv'),
os.path.join(directory, "indicator gapminder gdp_per_capita_ppp.xlsx"))
idc.plot_income(2000)
idc.plot_income(1990)
with self.assertRaises(KeyError):
idc.plot_income(2200)
