def test_fails_perc_coord_not_dim(self):
"""Test it raises a Value Error if percentile coord not a dim."""
plugin = WeightedBlendAcrossWholeDimension(self.coord)
new_cube = self.cube.copy()
new_cube.add_aux_coord(AuxCoord([10.0], long_name="percentile"))
msg = "The percentile coord must be a dimension " "of the cube."
with self.assertRaisesRegex(ValueError, msg):
plugin.check_percentile_coord(new_cube)
def test_fails_percentile_data_max_mode(self):
"""Test a Value Error is raised if the maximum mode is applied to
percentile data."""
coord = "forecast_reference_time"
plugin = WeightedBlendAcrossWholeDimension(coord, 'weighted_maximum')
new_cube = percentile_cube()
msg = ('The "weighted_maximum" mode is not supported for percentile '
'data.')
with self.assertRaisesRegex(ValueError, msg):
plugin.check_percentile_coord(new_cube)
def test_fails_perc_coord_not_dim(self):
"""Test it raises a Value Error if percentile coord not a dim."""
coord = "forecast_reference_time"
plugin = WeightedBlendAcrossWholeDimension(coord, 'weighted_mean')
new_cube = self.cube.copy()
new_cube.add_aux_coord(
AuxCoord([10.0], long_name="percentile_over_time"))
msg = ('The percentile coord must be a dimension ' 'of the cube.')
with self.assertRaisesRegex(ValueError, msg):
plugin.check_percentile_coord(new_cube)
def test_fails_only_one_percentile_value(self):
"""Test it raises a Value Error if there is only one percentile."""
plugin = WeightedBlendAcrossWholeDimension(self.coord)
new_cube = Cube([[0.0]])
new_cube.add_dim_coord(DimCoord([10.0], long_name="percentile"), 0)
new_cube.add_dim_coord(
DimCoord([10.0], long_name="forecast_reference_time"), 1)
msg = ("Percentile coordinate does not have enough points"
" in order to blend. Must have at least 2 percentiles.")
with self.assertRaisesRegex(ValueError, msg):
plugin.check_percentile_coord(new_cube)
def test_basic(self):
"""Tests the basic use of check_percentile_coord"""
expected = DimCoord(
np.array([0.0, 20.0], dtype="float32"),
standard_name=None,
units="%",
long_name="percentile",
)
cube = self.perc_cube[:2]
x = WeightedBlendAcrossWholeDimension.check_percentile_coord(cube)
self.assertEqual(x, expected)
def test_basic(self):
"""Tests the basic use of check_percentile_coord"""
cube = self.perc_cube[:2]
self.assertTrue(WeightedBlendAcrossWholeDimension.check_percentile_coord(cube))
