# Legacy (HDF5 1.4/1.6-era) fixtures

Unmodified copies of the HDF Group's own test files from
https://github.com/HDFGroup/hdf5 at a3cf1ea82cc7a66e50029a688121e1b105a7ce88
(BSD-style license, see that repository's `LICENSE`). Current libraries cannot
write these structures, so they are kept as files.

| File | Upstream path | Exercises |
|---|---|---|
| `deflate.h5` | `test/testfiles/deflate.h5` | Data Layout message v1, chunked + deflate (v1 B-tree index) |
| `h5ex_g_iterate.h5` | `HDF5Examples/C/H5G/h5ex_g_iterate.h5` | Data Layout message v2, contiguous; an unallocated dataset |
| `tarrold.h5` | `test/testfiles/tarrold.h5` | Compound datatype v1 members with legacy array dimensions |
| `tcompound.h5` | `tools/test/testfiles/tcompound.h5` | Version-1 shared messages (committed datatypes); compound v1 array members with data |