def state(self): """Return test state.""" out = AttribDict() out.path = os.path.join(os.path.dirname(__file__), 'data') out.path_images = os.path.join(os.path.dirname(__file__), 'images') out.a = np.sin(np.linspace(0, 10, 101)) out.b = 5 * np.roll(out.a, 5) out.c = 5 * np.roll(out.a[:81], 5) return out