20 engine tests failed on Windows on clean main. Three real bugs on
case-insensitive volumes (Windows, default macOS APFS) caused most of them:
- Renaming a photo probed `a.XMP` before `a.xmp`. On a case-insensitive
volume the upper-case spelling "exists" when only `a.xmp` is there, so the
sidecar was moved as `Trip.XMP` (and its retained-packet record was taken
under the wrong spelling). Upper-case candidates are now used only when the
folder lists them exactly (new `MoveFs::listed`).
- `RealFs::same_file` on Windows (no file id in std) depended on argument
order: `same_file("Trip.XMP", "Trip.xmp")` was false when `Trip.xmp` is the
real entry, so saving after a partial rename reported a phantom collision.
It is now symmetric, and also requires the names to differ only by case
(two different files with equal size and mtime were "the same").
- Saving metadata picked the sidecar spelling by `is_file()`, lower case
first, so the atomic write renamed an existing `Trip.XMP` to `Trip.xmp`.
The spelling the folder lists now wins.
The rest were fixtures: FakeFs fault paths, catalog paths and expected
paths spelled with `/` while the code joins with the host separator.
Regression tests: case_insensitive_renames_keep_each_sidecars_spelling
(FakeFs, every platform; fails without the fix) and
same_file_spellings_are_symmetric_on_windows. Linux behaviour unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The tests were written for a case-sensitive disk. rename.rs sidecars() offers both
.XMP and .xmp per naming and keeps those that exist; on case-insensitive APFS
a.XMP "exists" for a file stored as a.xmp, so the code renames a.XMP while the
fault injectors (Faults twice, PartialRename) compared exact paths with the
lowercase one: the injected failure never fired and the rename the tests expect
to be refused succeeded.
Fault injectors now match by same_path_or_file (equal path, or the same file by
identity); two assertions that compared an exact spelling use same_path_for_volume
(equal, or equal ignoring ASCII case on a case-insensitive volume), and one that
required the lowercase packet to be absent is skipped there, where both spellings
are one file. Helpers live in tests_xmp.rs. Production code is not touched.
Run with rustc 1.99.0 on macOS: case-insensitive APFS, the ten failed before and
pass now; case-sensitive APFS (a disk image), the original tests pass and so do
these. All 13 sidecar::tests_repair tests pass on both. cargo fmt is clean and
clippy over lightcraft-engine with --all-targets is clean. Not touched: the
.xmp -> .XMP spelling change on rename, and the Lightroom folder test (its own PR).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
bflatastic