def test_change_maximum_and_origin():
grid = StructuredGrid(origin=np.zeros(3), nsteps=np.array([5, 5, 5]))
grid.origin = np.array([-1.0, -1.0, -1.0])
assert np.all(np.isclose(grid.origin, np.array([-1, -1, -1])))
assert np.all(np.isclose(grid.nsteps, np.array([6, 6, 6])))
assert np.all(np.isclose(grid.step_vector, np.ones(3)))
grid.maximum = np.array([7.0, 7.0, 7.0])
assert np.all(np.isclose(grid.nsteps, np.array([9, 9, 9])))
assert np.all(np.isclose(grid.maximum, np.array([7.0, 7.0, 7.0])))
assert np.all(np.isclose(grid.step_vector, np.ones(3)))
def test_change_origin():
grid = StructuredGrid(origin=np.zeros(3), nsteps=np.array([5, 5, 5]))
grid.origin = np.array([-1, -1, -1])
assert np.all(grid.origin == np.array([-1, -1, -1]))
assert np.all(grid.nsteps == np.array([6, 6, 6]))
assert np.all(grid.step_vector == np.ones(3))