in-process invocation of a test runner fails with "Recording already in progress"

[apotterri]

If one of the supported test runners (e.g. pytest, unittest) is run in-process, the enabled recording methods for the process apply to the test runner.

For example, in this test, the sqlmesh plan subcommand uses a click.testing.CliRunner to run a unittest test, which fails:

tests/cli/test_cli.py::test_plan 
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Test Failure Summary
======================================================================
Num Successful Tests: 0
Failure Test: sqlmesh_example.full_model test_example_full_model
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E
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ERROR: test_example_full_model (/private/var/folders/2g/xqtf8_tn5j1861bbkvvhtmmr0000gn/T/pytest-of-ajp/pytest-159/test_plan0/tests/test_full_model.yaml)
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Traceback (most recent call last):
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/wrapt/wrappers.py", line 744, in __call__
 return self._self_wrapper(self.__wrapped__, self._self_instance,
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/unittest.py", line 36, in callTestMethod
 with _session.record(test_case.__class__, method_name, location=location) as metadata:
 File "/Users/ajp/.asdf/installs/python/3.12.2/lib/python3.12/contextlib.py", line 137, in __enter__
 return next(self.gen)
 ^^^^^^^^^^^^^^
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/testing_framework.py", line 119, in record
 with rec, environ.disabled("requests"):
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/recording.py", line 47, in __enter__
 self.start()
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/recording.py", line 32, in start
 r.start_recording()
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/recorder.py", line 108, in start_recording
 cls.get_current()._start_recording() # pylint: disable=protected-access
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/recorder.py", line 236, in _start_recording
 super()._start_recording()
 File "/Users/ajp/src/applandinc/appmap-python/_appmap/recorder.py", line 158, in _start_recording
 raise RuntimeError("Recording already in progress")
RuntimeError: Recording already in progress

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Ran 1 test in 0.165s

FAILED (errors=1)

Error: Cannot generate plan due to failing test(s). Fix test(s) and run again

FAILED

============================================================================================ FAILURES ============================================================================================