Fix tests for UFO config

[ScottyVenable]

Summary

• patch test suite to use asserts instead of returns
• handle missing config gracefully
• ensure tests exit cleanly when optional configs are missing

Testing

• pytest -q

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https://chatgpt.com/codex/tasks/task_e_68617afc3f40833297a6ec32893926b4

[Copilot]

Pull Request Overview

This PR refactors the configuration test suite to use assert statements instead of returning boolean flags, adds graceful handling when optional configs are missing, and standardizes print formatting.

• Replace return-based test flow with assert success in main and dataflow config tests
• Handle missing config directories and data gracefully by early return
• Update the main test runner to catch exceptions and aggregate results

Comments suppressed due to low confidence (2)

UFO/test_config.py:145

• The assert True at the end of test_env_files makes this test always pass, even when no env files are found. Consider using pytest.skip("No .env files found") for optional behavior or add a meaningful assertion to validate required files.

    assert True

UFO/test_config.py:178

• The assert True in test_environment_variables does not verify that any environment variables are actually set. Either assert on found_vars or skip the test when none are expected, to ensure the test catches missing variables.

    assert True