[Tests] parallelize (#3078)

* [Tests] parallelize

* finish folder structuring

* Parallelize tests more

* Correct saving of pipelines

* make sure logging level is correct

* try again

* Apply suggestions from code review
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>

---------
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>

tests/pipelines/text_to_video/test_text_to_video_zero.py

@@ -20,7 +20,7 @@ import torch
 from diffusers import DDIMScheduler, TextToVideoZeroPipeline
 from diffusers.utils import load_pt, require_torch_gpu, slow
 
-from ...test_pipelines_common import assert_mean_pixel_difference
+from ..test_pipelines_common import assert_mean_pixel_difference
 
 
 @slow

tests/pipelines/unclip/test_unclip.py

@@ -25,8 +25,8 @@ from diffusers.pipelines.unclip.text_proj import UnCLIPTextProjModel
 from diffusers.utils import load_numpy, nightly, slow, torch_device
 from diffusers.utils.testing_utils import require_torch_gpu, skip_mps
 
-from ...pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_PARAMS
-from ...test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
+from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_PARAMS
+from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
 
 
 class UnCLIPPipelineFastTests(PipelineTesterMixin, unittest.TestCase):

tests/pipelines/unclip/test_unclip_image_variation.py

@@ -39,8 +39,8 @@ from diffusers.pipelines.unclip.text_proj import UnCLIPTextProjModel
 from diffusers.utils import floats_tensor, load_numpy, slow, torch_device
 from diffusers.utils.testing_utils import load_image, require_torch_gpu, skip_mps
 
-from ...pipeline_params import IMAGE_VARIATION_BATCH_PARAMS, IMAGE_VARIATION_PARAMS
-from ...test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
+from ..pipeline_params import IMAGE_VARIATION_BATCH_PARAMS, IMAGE_VARIATION_PARAMS
+from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
 
 
 class UnCLIPImageVariationPipelineFastTests(PipelineTesterMixin, unittest.TestCase):