Disable unit testing

[bessman]

This pull request removes the ability to run the tests as unit tests, by removing the code for recording and replaying serial traffic.

The tests remain useful as integration tests, but the maintenance overhead of re-recording serial traffic for every little change in order for the unit tests to pass has proven prohibitive.

Summary by Sourcery

Disable unit testing by removing the code for recording and replaying serial traffic, transitioning tests to function as integration tests. Update test fixtures accordingly and remove the test job from the CI workflow.

Enhancements:

• Remove the ability to run tests as unit tests by eliminating the code for recording and replaying serial traffic.
• Simplify the test setup by removing the need for mock handlers and recorded traffic.

CI:

• Remove the test job from the CI workflow, which previously ran tests across multiple Python versions.

Tests:

• Update test fixtures to use real SerialHandler instances instead of MockHandler, reflecting the shift from unit to integration testing.

Chores:

• Delete JSON files used for recording serial traffic during unit tests.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request removes the ability to run tests as unit tests by eliminating the code for recording and replaying serial traffic. The tests will now only function as integration tests, requiring a real PSLab device to be connected. The changes primarily affect the test infrastructure and how tests are executed, without modifying the core functionality of the PSLab library itself.

File-Level Changes

Files	Changes
pslab/serial_handler.py tests/conftest.py	Removed the ability to run tests as unit tests by eliminating code for recording and replaying serial traffic
tests/test_logic_analyzer.py tests/test_oscilloscope.py tests/test_spi.py tests/test_uart.py tests/test_i2c.py tests/test_multimeter.py tests/test_waveform_generator.py tests/test_motor.py tests/test_power_supply.py	Simplified test setup by removing conditional logic for unit vs. integration testing
tests/test_logic_analyzer.py tests/test_oscilloscope.py tests/test_spi.py tests/test_uart.py tests/test_i2c.py tests/test_cli.py tests/test_motor.py	Updated test documentation to reflect that tests now require a connected PSLab device
pslab/serial_handler.py	Removed MockHandler class and related code from serial_handler.py
tests/recordings/	Deleted all JSON recording files used for unit testing
.github/workflows/workflow.yml	Removed test job from GitHub Actions workflow
tests/test_logic_analyzer.py tests/test_oscilloscope.py tests/test_spi.py tests/test_uart.py tests/test_i2c.py tests/test_multimeter.py tests/test_waveform_generator.py tests/test_motor.py tests/test_power_supply.py	Updated various test files to remove logging and conditional logic related to unit testing

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[sourcery-ai]

Hey @bessman - I've reviewed your changes - here's some feedback:

Overall Comments:

• While simplifying the testing approach is understandable, completely removing unit tests in favor of integration tests only could make development and CI more challenging. Consider keeping a small set of critical unit tests with recorded data to maintain some level of quick, hardware-independent testing.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟡 Testing: 7 issues found
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[bessman]

While simplifying the testing approach is understandable, completely removing unit tests in favor of integration tests only could make development and CI more challenging. Consider keeping a small set of critical unit tests with recorded data to maintain some level of quick, hardware-independent testing.

This is a good idea but will be done in a separate pull request. The old method of recording and replaying serial traffic is obsolete, and should be removed in favor of pytest-reserial anyway.