convert dora fusion test from pytest to unittest

[osbm]

Related to #1321

Thanks

diff is looking crazy, i did some more tests should i add them all or just one by one?

CC: @jerryzh168

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/ao/1622

• 📄 Preview Python docs built from this PR

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❌ 2 New Failures

As of commit 33b02ee with merge base 47f96f1 ():

NEW FAILURES - The following jobs have failed:

• Code Analysis with Ruff / build (3.9) (gh)
  Process completed with exit code 1.
• Run Float8 Tests / test (H100, linux.aws.h100, --pre torch torchvision torchaudio --index-url https://download.pytor... / linux-job (gh)
  RuntimeError: Command

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[jerryzh168]

thanks @osbm refactoring the test file one by one sounds reasonable and probably easier to review and manage I think

[jerryzh168]

please address https://github.com/pytorch/ao/actions/runs/12979270675/job/36338709239?pr=1622 by manually running https://github.com/pytorch/ao/blob/7b0d2ce50baaa2a137eb9d438a076544c43096a3/scripts/run_ruff_fix.sh

or enable pre-commit run (#1448 (comment)) and add a new commit