x01dcandClaude Sonnet 5
6d65a87ae4
dev.cam_xeye.image.put(composite) failed on real hardware -- PreviewSignal is a BECMessageSignal subclass, and BEC hardcodes rpc_access=False for that signal_info, so the client-side device proxy never exposes `image` as an attribute at all (confirmed: this is a structural BEC constraint, not specific to this device -- no existing RPC surface, device or widget, offers a raw-array setter either). Add IDSCamera.push_preview_image(data), a small device-server-side method (alongside the existing get_last_image()) that does self.image.put(data) from within the device-server process, where PreviewSignal is a normal ophyd attribute. _push_smear_composite now calls dev.cam_xeye.push_preview_image(composite) instead of writing to the signal directly. 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.