[UniDiffuser Tests] Fix some tests

[sayakpaul]

W.r.t the UniDiffusers failing here.

This PR fixes some UniDiffuser tests.

I first reproduced the environment in which our test suite is run following https://github.com/huggingface/diffusers/blob/main/.github/workflows/push_tests.yml. It's as simple as:

• First, run the Docker containing (diffusers/diffusers-pytorch-cuda).
• Clone diffusers from the PR branch.
• Install the dependencies.

Then I ran:

RUN_SLOW=1 python -m pytest -n 1 --max-worker-restart=0 --dist=loadfile tests/pipelines/unidiffuser/test_unidiffuser.py

On an A100, with the changes introduced in this PR all the tests from test_unidiffuser.py passed including the SLOW ones.

But on a V100, it failed with:

FAILED tests/pipelines/unidiffuser/test_unidiffuser.py::UniDiffuserPipelineSlowTests::test_unidiffuser_default_joint_v1_fp16 - AssertionError: assert 'A living room' == 'a living room'

@patrickvonplaten any thoughts on how this should be handled? Since our SLOW tests are run on a V100 always, I think it's okay to switch "'a living room'" to ensure the test passes but on an A100 this would fail complaining:

FAILED tests/pipelines/unidiffuser/test_unidiffuser.py::UniDiffuserPipelineSlowTests::test_unidiffuser_default_joint_v1_fp16 - AssertionError: assert 'a living room' == 'A living room'

(Just the opposite of the failure noted earlier)

Cc: @dg845

[HuggingFaceDocBuilderDev]

The documentation is not available anymore as the PR was closed or merged.

[patrickvonplaten]

cool!

[sayakpaul]

@patrickvonplaten I think there's still an issue with one SLOW test when run on V100 as stated initially. Maybe you missed it?

[patrickvonplaten]

Ah sorry yeah, we should try to make the code work for V100 since our tests run on a V100

[sayakpaul]

Ah sorry yeah, we should try to make the code work for V100 since our tests run on a V100

Will make the necessary changes 👍