The simulated cam_xeye (SimIDSCamera/_SimIDSBackend) served a single static Gaussian blob, cached at construction -- rotating lsamrot in a simulated session produced no visible motion, so the smear/composite rotation-center calibration aid had nothing to smear into an arc. Add an opt-in sim_rotation_coupling config (mirrors the existing sim_coarse_coupling idiom in sim_lamni.py's measured_positions()): when set, _SimIDSBackend regenerates a fresh frame on every get_image_data() call with an eccentric blob (make_rotating_test_pattern) tracking the coupled axis' live simulated Galil position instead of serving the cached static frame. Wired into LamNI's cam_xeye sim config only (host/port/axis matching lsamrot's own sim config); flomni's cam_xeye and any other SimIDSCamera user are unaffected since the new params default to None (byte-identical output to before, confirmed by test). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Getting Started with Testing using pytest
BEC is using the pytest framework. It can be installed via
pip install pytest
in your python environment.
We note that pytest is part of the optional-dependencies [dev] of the plugin package.
Introduction
Tests in this package should be stored in the tests directory.
We suggest to sort tests of different submodules, i.e. scans or devices in the respective folder structure, and to folow a naming convention of <test_module_name.py>.
It is mandatory for test files to begin with test_ for pytest to discover them.
To run all tests, navigate to the directory of the plugin from the command line, and run the command
pytest -v --random-order ./tests
Note, the python environment needs to be active.
The additional arg -v allows pytest to run in verbose mode which provides more detailed information about the tests being run.
The argument --random-order instructs pytest to run the tests in random order, which is the default in the CI pipelines.
Test examples
Writing tests can be quite specific for the given function. We recommend writing tests as isolated as possible, i.e. try to test single functions instead of full classes. A very useful class to enable isolated testing is MagicMock. In addition, we also recommend to take a look at the How-to guides from pytest.