def test_add_obs_preconditions_for_one_year_and_one_day(self):
        w = Workflow('test', Period('1991-01-01', '1992-01-02'))
        w.add_primary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_primary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_primary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))
        w.add_secondary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_secondary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_secondary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))

        preconditions = list()
        preconditions = w._add_obs_preconditions(preconditions)
        self.assertEqual(2, len(preconditions))
        self.assertEqual('/obs/1990/12', preconditions[0])
        self.assertEqual('/obs/1992/02', preconditions[1])
    def test_add_obs_preconditions_for_one_year_and_one_day(self):
        w = Workflow('test', Period('1991-01-01', '1992-01-02'))
        w.add_primary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_primary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_primary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))
        w.add_secondary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_secondary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_secondary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))

        preconditions = list()
        preconditions = w._add_obs_preconditions(preconditions)
        self.assertEqual(2, len(preconditions))
        self.assertEqual('/obs/1990/12', preconditions[0])
        self.assertEqual('/obs/1992/02', preconditions[1])
    def test_add_obs_preconditions_for_all_years(self):
        w = Workflow('test')
        w.add_primary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_primary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_primary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))
        w.add_secondary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_secondary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_secondary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))

        preconditions = list()
        preconditions = w._add_obs_preconditions(preconditions)
        self.assertEqual(2, len(preconditions))
        self.assertEqual('/obs/1988/10', preconditions[0])
        self.assertEqual('/obs/1995/01', preconditions[1])
    def test_add_obs_preconditions_for_all_years(self):
        w = Workflow('test')
        w.add_primary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_primary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_primary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))
        w.add_secondary_sensor('avhrr.n10', (1986, 11, 17), (1991, 9, 16))
        w.add_secondary_sensor('avhrr.n11', (1988, 11, 8), (1994, 12, 31))
        w.add_secondary_sensor('avhrr.n12', (1991, 9, 16), (1998, 12, 14))

        preconditions = list()
        preconditions = w._add_obs_preconditions(preconditions)
        self.assertEqual(2, len(preconditions))
        self.assertEqual('/obs/1988/10', preconditions[0])
        self.assertEqual('/obs/1995/01', preconditions[1])