def test_valid(self):
cf_name = 'stereographic'
cf_grid_var = mock.Mock(spec=[],
latitude_of_projection_origin=0,
longitude_of_projection_origin=0,
false_easting=-100,
false_northing=200,
scale_factor_at_projection_origin=1,
semi_major_axis=6377563.396,
semi_minor_axis=6356256.909)
engine = _engine(cf_grid_var, cf_name)
is_valid = has_supported_stereographic_parameters(engine, cf_name)
self.assertTrue(is_valid)
def test_valid(self):
cf_name = 'stereographic'
cf_grid_var = mock.Mock(
spec=[],
latitude_of_projection_origin=0,
longitude_of_projection_origin=0,
false_easting=-100,
false_northing=200,
scale_factor_at_projection_origin=1,
semi_major_axis=6377563.396,
semi_minor_axis=6356256.909)
engine = _engine(cf_grid_var, cf_name)
is_valid = has_supported_stereographic_parameters(engine, cf_name)
self.assertTrue(is_valid)
def test_invalid_scale_factor(self):
# Iris does not yet support scale factors other than one for
# stereographic projections
cf_name = 'stereographic'
cf_grid_var = mock.Mock(spec=[],
latitude_of_projection_origin=0,
longitude_of_projection_origin=0,
false_easting=-100,
false_northing=200,
scale_factor_at_projection_origin=0.9,
semi_major_axis=6377563.396,
semi_minor_axis=6356256.909)
engine = _engine(cf_grid_var, cf_name)
with warnings.catch_warnings(record=True) as warns:
warnings.simplefilter("always")
is_valid = has_supported_stereographic_parameters(engine, cf_name)
self.assertFalse(is_valid)
self.assertEqual(len(warns), 1)
self.assertRegex(str(warns[0]), 'Scale factor')
def test_invalid_scale_factor(self):
# Iris does not yet support scale factors other than one for
# stereographic projections
cf_name = 'stereographic'
cf_grid_var = mock.Mock(
spec=[],
latitude_of_projection_origin=0,
longitude_of_projection_origin=0,
false_easting=-100,
false_northing=200,
scale_factor_at_projection_origin=0.9,
semi_major_axis=6377563.396,
semi_minor_axis=6356256.909)
engine = _engine(cf_grid_var, cf_name)
with warnings.catch_warnings(record=True) as warns:
warnings.simplefilter("always")
is_valid = has_supported_stereographic_parameters(engine, cf_name)
self.assertFalse(is_valid)
self.assertEqual(len(warns), 1)
six.assertRegex(self, str(warns[0]), 'Scale factor')
