def test_exception_raised(self):
"""
Test that a CoordinateNotFoundError exception is raised if the
forecast_period, or the time and forecast_reference_time,
are not present.
"""
cube = set_up_cube()
msg = "The forecast period coordinate is not available"
with self.assertRaisesRegexp(CoordinateNotFoundError, msg):
Utilities.find_required_lead_times(cube)
def test_check_forecast_period_unit_conversion_exception(self):
"""
Test that an exception is raised, when the input cube has a
forecast_period coordinate with units that can not be converted
into hours.
"""
cube = add_forecast_reference_time_and_forecast_period(set_up_cube())
cube.coord("forecast_period").units = Unit("Celsius")
msg = "For forecast_period"
with self.assertRaisesRegexp(ValueError, msg):
Utilities.find_required_lead_times(cube)
def test_check_coordinate(self):
"""
Test that the data within the numpy array is as expected, when
the input cube has a forecast_period coordinate.
"""
cube = add_forecast_reference_time_and_forecast_period(set_up_cube())
expected_result = cube.coord("forecast_period").points
result = Utilities.find_required_lead_times(cube)
self.assertArrayAlmostEqual(result, expected_result)
def test_check_forecast_period_unit_conversion(self):
"""
Test that the data within the numpy array is as expected, when
the input cube has a forecast_period coordinate with units
other than the desired units of hours.
"""
cube = add_forecast_reference_time_and_forecast_period(set_up_cube())
expected_result = cube.coord("forecast_period").points.copy()
cube.coord("forecast_period").convert_units("seconds")
result = Utilities.find_required_lead_times(cube)
self.assertArrayAlmostEqual(result, expected_result)
def test_basic(self):
"""Test that a numpy array is returned."""
cube = add_forecast_reference_time_and_forecast_period(set_up_cube())
result = Utilities.find_required_lead_times(cube)
self.assertIsInstance(result, np.ndarray)