tests/pipelines/vq_diffusion/test_vq_diffusion.py;VQDiffusionPipelineFastTests;test_vq_diffusion_classifier_free_sampling;expected_slice = np.array([0.6648, 0.6531, 0.5303, 0.5891, 0.5727, 0.4439, 0.6305, 0.5565, 0.4913])