The harness counted ContiguousStorageRequired from any parser as an
allowed difference, so a converted module that wrongly fell back to the
whole file would still pass. It now accepts the error only from the
three sites that are not converted yet (dense attribute storage, a SOHM
B-tree index, huge fractal-heap objects, all found through a v2 B-tree)
and only in the checks that can reach them; anything else fails with
the check and the site named.
Checked by making LocalHeap::parse_in return the error first: the
fixture and h5py runs fail ("local heap fell back to the whole file").
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Making dataset_fill_value_in generic over Storage broke callers that pass
an array (`include_bytes!`): a generic parameter does not unsize-coerce
`&[u8; N]`. It takes &[u8] again, as before this branch, and wraps the
new dataset_fill_value_from_storage(&dyn Storage, ..).
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
tests/storage_equivalence.rs walks real files and runs every metadata
parser converted to Storage twice per object — over the file as a slice
and over a read_at-only CountingStorage — and requires identical results,
values and errors alike; the only allowed difference is the clean
ContiguousStorageRequired from the structures still indexed by a v2
B-tree (dense attributes, a SOHM B-tree index), which is counted. It
covers superblock and extension, cache image, SOHM table/list/B-tree,
object headers, attributes, fill values, shared messages, symbol-table
groups (local heap, B-tree, nodes, names), fractal heaps and their
objects, VDS mappings, and fixed/extensible array chunk indexes.
Inputs: every fixture; files h5py writes for what the fixtures lack
(extensible arrays with super blocks and paged data blocks, paged fixed
arrays, a 400-group v1 file with a user block, a 300-link dense group,
dense, shared and committed-type attributes, SOHM list and B-tree
indexes; honours CLAWHDF5_PYTHON / CLAWHDF5_REQUIRE_INTEROP); and, with
CLAWHDF5_STORAGE_CORPUS set, a corpus such as conformance/.cache/corpus.
Milestones M2/M3 add their parsers to check_object.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
