How to use the holidays.Canada function in holidays

def test_eq_ne(self):
        us1 = holidays.UnitedStates()
        us2 = holidays.US()
        us3 = holidays.UnitedStates(years=[2014])
        us4 = holidays.US(years=[2014])
        ca1 = holidays.Canada()
        ca2 = holidays.CA()
        ca3 = holidays.Canada(years=[2014])
        ca4 = holidays.CA(years=[2014])
        self.assertEqual(us1, us2)
        self.assertEqual(us3, us4)
        self.assertEqual(ca1, ca2)
        self.assertEqual(ca3, ca4)
        self.assertNotEqual(us1, us3)
        self.assertNotEqual(us1, ca1)
        self.assertNotEqual(us3, ca3)
        self.assertTrue(us1 != us3)

def test_eq_ne(self):
        us1 = holidays.UnitedStates()
        us2 = holidays.US()
        us3 = holidays.UnitedStates(years=[2014])
        us4 = holidays.US(years=[2014])
        ca1 = holidays.Canada()
        ca2 = holidays.CA()
        ca3 = holidays.Canada(years=[2014])
        ca4 = holidays.CA(years=[2014])
        self.assertEqual(us1, us2)
        self.assertEqual(us3, us4)
        self.assertEqual(ca1, ca2)
        self.assertEqual(ca3, ca4)
        self.assertNotEqual(us1, us3)
        self.assertNotEqual(us1, ca1)
        self.assertNotEqual(us3, ca3)
        self.assertTrue(us1 != us3)

elif self.observed and date(year, 12, 25).weekday() == 6:
                self[date(year, 12, 26)] = "Christmas Day (Observed)"

        # Boxing Day
        if year >= 1867:
            name = "Boxing Day"
            name_observed = name + " (Observed)"
            if self.observed and date(year, 12, 26).weekday() in (5, 6):
                self[date(year, 12, 26) + rd(weekday=MO)] = name_observed
            elif self.observed and date(year, 12, 26).weekday() == 0:
                self[date(year, 12, 27)] = name_observed
            else:
                self[date(year, 12, 26)] = name


class CA(Canada):
    pass


class Colombia(HolidayBase):
    # https://es.wikipedia.org/wiki/Anexo:D%C3%ADas_festivos_en_Colombia

    def __init__(self, **kwargs):
        self.country = 'CO'
        HolidayBase.__init__(self, **kwargs)

    def _populate(self, year):

        # Fixed date holidays!
        # If observed=True and they fall on a weekend they are not observed.
        # If observed=False there are 18 holidays