[Housekeeping] Support pytest-xdist

[thomasjpfan]

Describe the issue

pytest-xdist allows us to run the tests in parallel, which speeds up local development and the CI. GitHub actions allocates 2 cores per runner. With pytest -n I get the follow runtimes locally:

• 1 core (default): 121 seconds
• 2 cores: 80 seconds
• 4 cores: 48 seconds

The issue is that 4 tests fail. If we adjusts these tests, then we can get pytest-xdist working.

FAILED tests/flytekit/unit/core/test_conditions.py::test_condition_tuple_branches - AssertionError: assert '__channelexe...tions.sum_sub' == 'tests.flytek...tions.sum_sub'
FAILED tests/flytekit/unit/core/test_type_hints.py::test_error_messages - AssertionError: Regex pattern did not match.
FAILED tests/flytekit/unit/core/test_type_hints.py::test_union_type - AssertionError: Regex pattern did not match.
FAILED tests/flytekit/unit/core/test_workflows.py::test_wf_nested_comp - AssertionError: assert '__channelexe..._workflows.t1' == 'tests.flytek..._workflows.t1'

What if we do not do this?

We would not be taking advantage of all the CI compute and local compute for development.

Related component(s)

flytekit

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• Yes

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• Yes

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