[EE/BE] T206498038 Adding the legacy flow tests to add op

[cbilgin]

Summary

Adds back the to_edge and partition apis to the existing tests. See for more details T206498038.

Test plan

python -m unittest backends/xnnpack/test/ops/add.py

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/6907

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• [DomainsOnly] Jobs fail with GLIBC version not found

✅ No Failures

As of commit fda0b1f with merge base 7b76f0f ():
💚 Looks good so far! There are no failures yet. 💚

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[mcr229]

Error (FLAKE8) F821
    undefined name 'tesster'
    See https://www.flake8rules.com/rules/F821.html.
        251  |            tester.check_count(
        252  |                {"torch.ops.aten.add.Tensor": 1, "torch.ops.aten.relu.default": 1}
        253  |            )
    >>> 254  |            tesster.check(["torch.ops.quantized_decomposed"])
        255  |            if legacy:
        256  |                tester.to_edge()
        257  |                tester.partition()
  Warning (UFMT) format
    Run `lintrunner -a` to apply this patch.
    You can run `lintrunner -a` to apply this patch.
    211  211 |                 tester.partition()
    212  212 |             else:
    213  213 |                 tester.to_edge_transform_and_lower()
    213      |-                tester.check_count({"torch.ops.higher_order.executorch_call_delegate": 1})
         214 |+                tester.check_count(
         215 |+                    {"torch.ops.higher_order.executorch_call_delegate": 1}
         216 |+                )
    215  217 |                 tester.to_executorch()
    216  218 |                 tester.serialize()
    217  219 |                 tester.run_method_and_compare_outputs()
--------------------------------------------------------------------------------
    261  263 |             tester.to_executorch()
    262  264 |             tester.serialize()
    263  265 |             tester.run_method_and_compare_outputs()
    263      |-        

looks like a linter issue

[cbilgin]

@mcr229 fixed the linter issues I think.

[github-actions]

Looks like this PR hasn't been updated in a while so we're going to go ahead and mark this as Stale.
Feel free to remove the Stale label if you feel this was a mistake.
If you are unable to remove the Stale label please contact a maintainer in order to do so.
If you want the bot to never mark this PR stale again, add the no-stale label.
Stale pull requests will automatically be closed after 30 days of inactivity.

[github-actions]

Looks like this PR hasn't been updated in a while so we're going to go ahead and mark this as Stale.
Feel free to remove the Stale label if you feel this was a mistake.
If you are unable to remove the Stale label please contact a maintainer in order to do so.
If you want the bot to never mark this PR stale again, add the no-stale label.
Stale pull requests will automatically be closed after 30 days of inactivity.