test: move container test suites to pytest (#112)

* test: scaffold pytest suite with mise, uv and Task

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* ci: run the pytest suite via mise and task

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: make test cleanup survive repeated SIGINT

A group Ctrl-C reaches pytest a second time via task and uv while the
session fixture tears down, aborting the volume cleanup. Ignore SIGINT
and SIGTERM during cleanup, remove volumes in finally, and tolerate
already-removed objects.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: pin Python 3.13 for uv without mise

Add .python-version (read by mise and uv) and cap requires-python at
<3.14 so bare uv uses 3.13 or fails instead of picking 3.14.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: clean up test containers on SIGTERM

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: port compat tests to pytest

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: assert the success message first in the corruption test

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: assert the empty-tag snapshot carries no tags

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: remove anonymous volumes with short-lived test containers

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: port feature-gated tests to pytest

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: port sabotage self-test to task test:sabotage

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: create parent directories in put_file

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: move structure.yml to tests and remove cst volume leak

container-structure-test left one anonymous volume per test container.
tests/structure.py runs it with --save and removes the new containers
with their volumes afterwards.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: remove the Bash suite

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* ci: run only the Python suite in the test job

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* docs: describe the Python test suite

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: isolate scenario steps, share helpers, use restore_latest, HEAD dir probe

Scenario fixtures record each step; a failing step fails only the tests
that assert on it. running() and raise_interrupt() live in helpers.py.
put_file probes parent directories with a HEAD request instead of a
get_archive stream. stream_run uses restore_latest and asserts its result.
Docstrings no longer refer to the removed Bash suite.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: sabotage check rejects errors and malformed reports

Only <failure> of the expected tests counts as red; errors in them and a
malformed JUnit report exit 2 (invalid) instead of passing or exiting 1.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* test: structure wrapper removes only its own containers

Restrict cleanup to containers of the image under test without the
rbd-test-run label and ignore NotFound.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* build: run all test suites and aggregate the exit code

task test no longer stops at the first failing suite.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: sabotage check treats failed scenario steps as INVALID

StepFailed is no AssertionError any more; sabotage.py counts a JUnit failure
named StepFailed as error, so an expected-red test only counts when its own
assertion fails.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: hard timeout for container-structure-test

CST_TIMEOUT (default 300 s) kills a hanging run; existing cleanup removes the
containers; exit code 124 with a clear message.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: shorten sabotage message for lint

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

* fix: handle JUnit failures without message in sabotage check

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>

.python-version

@@ -0,0 +1 @@
+3.13