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test(boundary): PR7 T7.3 — self-tests for the scanner
Adds backend/tests/test_workspace_boundary_self.py (9 cases) to guard
against silent-empty regressions in the boundary scanner: every claim
the scanner makes is reproduced against a synthetic .py snippet written
to tmp_path and fed to `collect_runtime_checkpoint_imports`.
Coverage:
- direct `from langgraph.checkpoint.* import X` -> flagged
- bare `import langgraph.checkpoint.memory` -> flagged
- third-party `langgraph_checkpoint_postgres` / `..._sqlite` -> flagged
- `if TYPE_CHECKING:` block -> skipped (Name form)
- `if typing.TYPE_CHECKING:` block -> skipped (Attribute form)
- nested-under-`if True:` TYPE_CHECKING block -> skipped (parent walk)
- unrelated imports (`os`, `langgraph.graph.state`, `app.gateway.deps`) -> ignored
- string literal containing the target module path -> ignored (not an import node)
- syntax-broken file -> returns [] (parser exception swallowed)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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2026-05-14 13:52:36 +08:00 |
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