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From: | Thomas Huth |
Subject: | Re: [PATCH v2 00/23] Convert avocado tests to normal Python unittests |
Date: | Fri, 26 Jul 2024 15:03:10 +0200 |
User-agent: | Mozilla Thunderbird |
On 25/07/2024 13.07, Daniel P. Berrangé wrote:
On Thu, Jul 25, 2024 at 08:42:31PM +1000, Richard Henderson wrote:On 7/25/24 19:55, Daniel P. Berrangé wrote:On Thu, Jul 25, 2024 at 09:35:22AM +1000, Richard Henderson wrote:
...
Avocado runs a first pass doing all of the downloads, and only afterward runs the actual timed tests. I don't know the specifics of how, but it certainly obvious in the logging.Oh interesting, I found how it does it.. The file avocado/plugins/assets.py will build an AST of the python code in a test file, look for all 'fetch_asset' calls, then extract the parameters to these calls, and donwload them. This is clever. Basically avoids the refactoring that I suggested. So yeah, that is a gap. Practically speaking, we have a choice of either calling into this avocado python lib as is, or copying tthat python lib into QEMU.
Honestly, I'd prefer to do some refactoring instead, something like you suggested in your earlier mail. Rationale: For the basic tests it would be good if we would not depend on the Avacodo framework anymore, otherwise we likely will continue to run into the situation that our test framework stops working on some random new python versions and nobody within the QEMU community has a clue how to fix the situation since nobody is really familiar with the Avocado framework. Also, while that avocado/plugins/assets.py sounds like a very neat trick done by a skilled Python wizard, the average QEMU developer (like me) is just a skilled C coder with only basic Python knowledge, so I'd prefer if we could use a simpler mechanism instead that is easier to understand and to debug for everybody once we run into problems with it.
Thus, I'd suggest to bite the bullet and refactor the tests that download assets. I can look into this after my summer vacation - but if somebody feels interested and wants to look into this during the next two weeks already, that would be very welcome, too, of course!
Thomas
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