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@cw-python-release-helper cw-python-release-helper released this 21 Apr 18:52
· 59 commits to main since this release
v0.19.1
ffea018

v0.19.1 (2026-04-21)

This release is published under the Apache-2.0 License.

Bug Fixes

  • tests: Close e2e runner-pin bypass in minimal-defaults tests (7268276)

Six e2e tests bypass the CWSANDBOX_TEST_RUNNER_IDS / --cwsandbox-runner-ids pin because they construct their own SandboxDefaults or call Sandbox.run() without defaults. During runner-scoped rollouts these tests can land on unrelated runners and produce false failures masquerading as regressions in the PR under test.

Expose a session-scoped configured_runner_ids fixture as the test-facing interface, refactor sandbox_defaults to consume it, and wire the minimal-defaults tests to forward the pin via Sandbox.run() kwargs. Keep the "minimal SandboxDefaults" intent of each bypass test intact by forwarding at the call site rather than injecting into the constructor. Switch the burstable-QoS test to sandbox_defaults.with_overrides(resources=...) so it inherits the pin transitively. Add placement assertions for both forwarding patterns (call-site kwarg and defaults-inherited) so the bypass is self-verifying when a pin is configured.

Tighten assertions on test_sandbox_with_runway_and_runner_ids to check equality with the discovered profile_id / runner_id rather than non-None. tests/AGENTS.md now names this test as the legitimate opt-out exemplar, so the assertions need to actually verify the targeting semantic rather than pass whenever any sandbox starts.

Document the fixture and a contract in tests/AGENTS.md so future tests comply without reintroducing the bypass.

Detailed Changes: v0.19.0...v0.19.1

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