ci: dont crash if testing matrix is empty

[Borda]

Before submitting

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

fixing internal tests and some other notebooks

Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> [48 lines of output] running egg_info writing lib3/PyYAML.egg-info/PKG-INFO writing dependency_links to lib3/PyYAML.egg-info/dependency_links.txt writing top-level names to lib3/PyYAML.egg-info/top_level.txt Traceback (most recent call last): File "/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module> main() File "/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main json_out['return_val'] = hook(**hook_input['kwargs']) File "/opt/hostedtoolcache/Python/3.10.14/x64/lib/python3.10/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 1[18](https://github.com/Lightning-AI/tutorials/actions/runs/10014342822/job/27683863858?pr=325#step:6:19), in get_requires_for_build_wheel return hook(config_settings) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 327, in get_requires_for_build_wheel return self._get_build_requires(config_settings, requirements=[]) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 297, in _get_build_requires self.run_setup() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/build_meta.py", line 313, in run_setup exec(code, locals()) File "<string>", line 271, in <module> File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/__init__.py", line 108, in setup return distutils.core.setup(**attrs) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/core.py", line 184, in setup return run_commands(dist) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/core.py", line [20](https://github.com/Lightning-AI/tutorials/actions/runs/10014342822/job/27683863858?pr=325#step:6:21)0, in run_commands dist.run_commands() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 970, in run_commands self.run_command(cmd) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/dist.py", line 974, in run_command super().run_command(command) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/dist.py", line 989, in run_command cmd_obj.run() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 3[21](https://github.com/Lightning-AI/tutorials/actions/runs/10014342822/job/27683863858?pr=325#step:6:22), in run self.find_sources() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 329, in find_sources mm.run() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 550, in run self.add_defaults() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/command/egg_info.py", line 588, in add_defaults sdist.add_defaults(self) File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/command/sdist.py", line 102, in add_defaults super().add_defaults() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/command/sdist.py", line [25](https://github.com/Lightning-AI/tutorials/actions/runs/10014342822/job/27683863858?pr=325#step:6:26)0, in add_defaults self._add_defaults_ext() File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/command/sdist.py", line 335, in _add_defaults_ext self.filelist.extend(build_ext.get_source_files()) File "<string>", line 201, in get_source_files File "/tmp/pip-build-env-d6d0ojk0/overlay/lib/python3.10/site-packages/setuptools/_distutils/cmd.py", line 107, in __getattr__ raise AttributeError(attr) AttributeError: cython_sources [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. error: subprocess-exited-with-error × Getting requirements to build wheel did not run successfully. │ exit code: 1 ╰─> See above for output. 

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71%. Comparing base (ac8f7ba) to head (61befd8).

Additional details and impacted files

@@ Coverage Diff @@ ## main #326 +/- ## =================================== Coverage 71% 71% =================================== Files 2 2 Lines 401 401 =================================== Hits 285 285 Misses 116 116