v0.4.2

0.4.2 - 2026-06-06

Added

• PytestOperator(dry_run=True) -- new optional argument that switches
  the run to pytest's --collect-only mode. Test bodies do NOT
  execute; pytest only collects them (imports modules, runs collection-
  time fixtures, walks the test tree). Intended as a pre-flight task in
  a DAG: verifies the test path resolves on the worker, that imports
  succeed (so the worker has all required deps installed), and that
  collection itself succeeds (no syntax errors, no missing fixtures).
  Collection errors surface the same way normal test failures do --
  the task fails with TestsFailedError under the default
  fail_on_test_failure=True. The user's pytest_args are not
  mutated; the --collect-only flag is appended to a per-call
  effective list at execute() time, so retries see the original
  configuration and downstream introspection of the operator is honest.
  Default dry_run=False -- behaviour unchanged for existing tasks.
• JSONResultParser now reports TestRunResult.total from
  summary.collected when summary.total is 0 and no per-case
  entries were parsed. This is exactly the shape pytest-json-report
  writes in --collect-only mode (zero "ran" tests, N collected).
  Normal runs are unaffected -- the fallback only kicks in when there
  is no other signal. The JUnit XML for --collect-only contains
  no <testcase> entries at all (<testsuite tests="0">), so the
  JUnit parser cannot report a count for dry-run; the operator
  docstring notes this limitation.