def test_failure_different_grids(self):
"""Test failure comparing an equal area with a lat/lon grid"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32))
cutout = set_up_variable_cube(
np.ones((10, 10), dtype=np.float32), spatial_grid="equalarea"
)
self.assertFalse(grid_contains_cutout(grid, cutout))
def test_success_latlon(self):
"""Test success for a lat/lon cube created by subsetting another
cube"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32),
spatial_grid="latlon")
cutout = grid[2:5, 3:7]
self.assertTrue(grid_contains_cutout(grid, cutout))
def test_failure_different_units(self):
"""Test failure comparing grids in different units"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32),
spatial_grid="equalarea")
cutout = grid.copy()
for axis in ["x", "y"]:
cutout.coord(axis=axis).convert_units("feet")
self.assertFalse(grid_contains_cutout(grid, cutout))
def test_failure_partial_overlap(self):
"""Test failure if the cutout is only partially included in the
grid"""
grid = set_up_variable_cube(
np.ones((10, 10), dtype=np.float32), spatial_grid="equalarea"
)
cutout = grid.copy()
grid_spacing = calculate_grid_spacing(cutout, cutout.coord(axis="x").units)
cutout.coord(axis="x").points = cutout.coord(axis="x").points + 2 * grid_spacing
self.assertFalse(grid_contains_cutout(grid, cutout))
def test_failure_outside_domain(self):
"""Test failure if the cutout begins outside the grid domain"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32),
spatial_grid="equalarea")
cutout = grid.copy()
grid_spacing = calculate_grid_spacing(cutout,
cutout.coord(axis="x").units)
cutout.coord(axis="x").points = (cutout.coord(axis="x").points -
10 * grid_spacing)
self.assertFalse(grid_contains_cutout(grid, cutout))
def test_basic(self):
"""Test success for matching cubes"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32))
cutout = set_up_variable_cube(np.zeros((10, 10), dtype=np.float32))
self.assertTrue(grid_contains_cutout(grid, cutout))
def test_failure_mismatched_grid_points(self):
"""Test failure when grids overlap but points do not match"""
grid = set_up_variable_cube(np.ones((10, 10), dtype=np.float32))
cutout = set_up_variable_cube(np.ones((6, 7), dtype=np.float32))
self.assertFalse(grid_contains_cutout(grid, cutout))
