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2023-05-30py: unittests.py: Add weakref helpers and use delTomi Valkeinen
Add helpers to check if a weakref or a list of weakrefs is alive or dead. Also use 'del' for local variables instead of setting the variable to None. This makes debugging the test easier as the locals will be gone from locals() dict. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2023-05-30py: Use exceptions instead of returning error codesTomi Valkeinen
We have multiple methods which return an error code, mimicking the C++ API. Using exceptions is more natural in the Python API, so change all those methods to raise an Exception instead. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2023-05-30py: Fix CameraManager.version propertyTomi Valkeinen
The current CameraManager.version doesn't work at all (raises a TypeError), as that's not how you use expose C++ static methods as Python class methods. Fix it. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-12-24test: py: Fix test failure when ASan is enabledLaurent Pinchart
When the address sanitizer is enabled, the Python unit tests fail due to the link order runtime check as the Python interpreter is (generally) not linked to ASan. Fix this by LD_PRELOAD'ing the ASan runtime. We have to disable the leak detector as the Python interpreter itself leaks memory, which would result in test failures. To LD_PRELOAD the ASan runtime, the path to the binary needs to be known. gcc gives us a generic way to get the path, but that doesn't work with clang as the ASan runtime file name depends on the clang version and target architecture. We thus have to keep the Python test disabled when ASan is enabled and libcamera is compiled with clang. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2022-08-19py: Switch to non-blocking eventfdTomi Valkeinen
Blocking wait can be easily implemented on top in Python, so rather than supporting only blocking reads, or supporting both non-blocking and blocking reads, let's support only non-blocking reads. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-06-04py: Merge read_event() and get_ready_requests()Tomi Valkeinen
We always call CameraManager.read_event() and CameraManager.get_ready_requests(), so to simplify the use merge the read_event() into the get_ready_requests(). This has the side effect that get_ready_requests() will now block if there is no event ready. If we ever need to call get_ready_requests() in a polling manner we will need a new function which behaves differently. However, afaics the only sensible way to manage the event loop is to use select/poll on the eventfd and then call get_ready_requests() once, which is the use case what the current merged function supports. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-06-01py: unittests: Fix test_select()Tomi Valkeinen
The test_select() currently uses self.assertTrue(len(ready_reqs) > 0) to see that cm.get_ready_requests() returns something. This is not always the case, as there may be two eventfd events queued, and the first call to cm.get_ready_requests() returns all the requests, and thus the second call returns none. Remove the self.assertTrue(len(ready_reqs) > 0) assert. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-06-01py: unittests: Fix test_sleep()Tomi Valkeinen
Waiting for 0.5 secs and expecting that the requests have been completed is... bad. Fix the test case by using cam.read_event() as a blocking wait, and wait until we have received all the requests that we queued. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-27py: Rename 'efd' to 'event_fd'Tomi Valkeinen
Perhaps it's better to have a more descriptive name here. I also considered just renaming 'efd' to 'fd', but 'event_fd' won. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-27py: Add CameraManager.read_event()Tomi Valkeinen
Add CameraManager.read_event() so that the user does not need to call os.read(). We use eventfd, and we must always read 8 bytes. Hiding that inside read_event() makes sense. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-18py: unittests: Make typechecker happyTomi Valkeinen
Add some annotations and self.assertIsNotNone() calls to remove the typechecker warnings. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-18py: unittests: Verify that cam and cm are freedTomi Valkeinen
Add checks to CameraTesterBase to verify that both the Camera and the CameraManager gets freed. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-18py: unittests: Fix selector fd useTomi Valkeinen
pyright complains about passing fileobj to os.read. Indeed, the parameter should be an int, but I guess fileobj gets automatically converted. In any case, using the fd is better. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-05-10py: Add unittests.pyTomi Valkeinen
Add a simple unittests.py as a base for python unittests. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>