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E.g. when only Nix files change
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Mypy since version 1.10.0 complains about this:
> test_driver/driver.py:109: error: No return value expected [return-value]
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We remove the global rootlog in favor of instantiating the logger as
required in the __init__.py and pass it down as a parameter (of our
AbstractLogger type).
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Previously, the XML logging was always present and only created an
output file if a special environment variable was present. We now only
create the XML logger if the environment variable is present, saving us
from logging to XML internally if it is not required.
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We add a new logger that allows generating a junit-xml compatible report
listing the subtests used in the nixos integration test. Junit-xml is a
widely used standard for test reports. The report can be used for quick
evaluation of which subtest failed.
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We use the newly AbstractLogger class and separate the XML and Terminal
logging that is currently mixed into one class. We restore the old
behavior by introducing a CompositeLogger that takes care of logging
both to terminal and XML.
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Use a proper function to enable serial log printing instead of setting
class member variables directly.
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We do not use the generic "nested" function but introduce a separate
subtest log call. This will later allow us to track subtests and account
logs to specific subtests.
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As the TODO says, this is already included by the script.
If adding a device, including this again here would result in either
two devices being added, or, if they were explicitly named, an error
due to reuse of the name.
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create_machine({"startCommand": "..."})
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We can finally do this now that it's no longer used.
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nixos/lib/test-driver: add `wait_for_qmp_event`
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Adds a function to wait for a new QMP event with a model filter
so that you can expect specific type of events with specific payloads.
e.g. a guest-reset-induced shutdown event.
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This is a hotfix for https://github.com/NixOS/nixpkgs/issues/266690,
where `systemctl show $unit` sometimes randomly leaves ActiveState out
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From now on, we will aim to ensure that the test driver
gets tested by OfBorg using all our available tests.
This commit adds the driver timeout test to the driver.
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Since the debut of the test-driver, we didn't obtain
a race timer with the test execution to ensure that tests doesn't run beyond
a certain amount of time.
This is particularly important when you are running into hanging tests
which cannot be detected by current facilities (requires more pvpanic wiring up, QMP
API stuff, etc.).
Two easy examples:
- Some QEMU tests may get stuck in some situation and run for more than 24 hours → we default to 1 hour max.
- Some QEMU tests may panic in the wrong place, e.g. UEFI firmware or worse → end users can set a "reasonable" amount of time
And then, we should let the retry logic retest them until they succeed and adjust
their global timeouts.
Of course, this does not help with the fact that the timeout may need to be
a function of the actual busyness of the machine running the tests.
This is only one step towards increased reliability.
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nixos/lib/test-driver: use QMP API to watch for VM state
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Now that we have a QMP client, we can wire it up in the test driver.
For now, it is almost completely useless because of the need of a constant "event loop", especially
for event listening.
In the next commits, we will slowly enable more and more usecases.
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When listening on unix sockets, it doesn't make sense to specify a port
for nginx's listen directive.
Since nginx defaults to port 80 when the port isn't specified (but the
address is), we can change the default for the option to null as well
without changing any behaviour.
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https://docs.astral.sh/ruff/rules/invalid-argument-name/
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see https://docs.astral.sh/ruff/rules/error-suffix-on-exception-name/
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this useful for local development
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This also makes configuration available if you just run those tools locally.
Also use ruff instead of pylint because it's faster and more
comprehensive.
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Since 008f9f0cd419bd66e922239e2319fd2b1f347ad8
("nixos/test-driver: actually use the backdoor message to wait for backdoor"),
when boot is still computering, we can get a tons of empty strings in response to the shell.
This is not really useful to print and waste the disk space for any CI system that logs them.
We stop logging chunks whenever they are empty.
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Removes 2>/dev/null which re-adds stderr output breaking execute
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While working on #192270, I noticed that only some wait_for_* helper
functions make the timeout configurable. I think we should be able to
customize it in all cases
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Capturing `stderr` as part of the return `output` could break existing tests.
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test-driver: add persistent history
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There is a `black --check --diff ${src}/test_driver` check in
nixos-test-driver's checkPhase so this format change will be needed.
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across sessions of interactive testing
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nixos/test-driver: use the short form argument to base64 for busybox compatibility.
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method documentation of nixos docs from python doc strings
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Machine class methods with nixos documentation
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