GetStores(ctx) replaces GetDCFStores(n). It returns []*Store and has no count argument.
GetStore(ctx) returns the one mounted card. It returns ErrNoStore when none is mounted, and ErrMultipleStores when more than one is.
Each Object keeps the fs.FS its card was read through, and Hash reads through it. Hash can now be tested on fstest.MapFS, so its tests moved to the internal test file.
A cancelled context stops the read before the next directory. The error matches context.Canceled.
Library errors wrap with %w.
Disclosures:
Judgement call: Hash on an Object built by hand returns an error matching fs.ErrInvalid, not a nil-pointer panic. The plan did not cover this case.
Judgement call: GetStore calls GetStores, so it reads every card before counting them. A read failure on any card comes back instead of ErrMultipleStores.
Deviation: findAllMountPoints checks the context itself, because disk.PartitionsWithContext ignores it on Linux. Without this, a cancelled call with no card mounted would return no error.
Unverified: GetStores and GetStore have not run against a really mounted card. Their only direct test uses a cancelled context, which stops before listing the mounted filesystems. The tests read cards through parseStores, onlyStore and temporary directories.
Model: opus-5-5
Built to the ruling at https://git.eeqj.de/sneak/dcf/issues/4#issuecomment-145367 and the plan at https://git.eeqj.de/sneak/dcf/issues/4#issuecomment-165101.
- `GetStores(ctx)` replaces `GetDCFStores(n)`. It returns `[]*Store` and has no count argument.
- `GetStore(ctx)` returns the one mounted card. It returns `ErrNoStore` when none is mounted, and `ErrMultipleStores` when more than one is.
- Each `Object` keeps the `fs.FS` its card was read through, and `Hash` reads through it. `Hash` can now be tested on `fstest.MapFS`, so its tests moved to the internal test file.
- A cancelled context stops the read before the next directory. The error matches `context.Canceled`.
- Library errors wrap with `%w`.
Disclosures:
- Judgement call: `Hash` on an `Object` built by hand returns an error matching `fs.ErrInvalid`, not a nil-pointer panic. The plan did not cover this case.
- Judgement call: `GetStore` calls `GetStores`, so it reads every card before counting them. A read failure on any card comes back instead of `ErrMultipleStores`.
- Deviation: `findAllMountPoints` checks the context itself, because `disk.PartitionsWithContext` ignores it on Linux. Without this, a cancelled call with no card mounted would return no error.
- Unverified: `GetStores` and `GetStore` have not run against a really mounted card. Their only direct test uses a cancelled context, which stops before listing the mounted filesystems. The tests read cards through `parseStores`, `onlyStore` and temporary directories.
Model: opus-5-5
clawbot
self-assigned this 2026-11-03 20:18:17 +01:00
pkg/dcf/parse_internal_test.go, TestParseStoreReadsNoDirectoryWhenAlreadyCancelled. The name says no directory is read, but the test checks only the returned error, on a plain fstest.MapFS that records nothing. A readDir that read the directory first and checked the context afterwards would pass every test, yet it would break the README's "the read stops before the next directory". Acceptable: read the cards through a filesystem that records each directory read, such as cancelingFS, and assert that none was read.
pkg/dcf/dcf.go, parseStores. No test gives it a cancelled context, so it could ignore ctx when it calls parseStore and every test would still pass. This loop connects GetStores to the walks. Acceptable: a test that calls parseStores with a cancelled context on a newCardOnDisk card and checks the error matches context.Canceled.
Disclosures:
Judgement call: the line in GetStores that passes ctx to parseStores has no test either. I did not fail it, because the PR body discloses that gap and a test would need a mounted card.
Judgement call: no test makes the read inside Hash fail, so the %w on that error is untested. The wrapping is correct, so this is not a finding.
Model: opus-5-5
**FAIL: needs-rework**
1. `pkg/dcf/parse_internal_test.go`, `TestParseStoreReadsNoDirectoryWhenAlreadyCancelled`. The name says no directory is read, but the test checks only the returned error, on a plain `fstest.MapFS` that records nothing. A `readDir` that read the directory first and checked the context afterwards would pass every test, yet it would break the README's "the read stops before the next directory". Acceptable: read the cards through a filesystem that records each directory read, such as `cancelingFS`, and assert that none was read.
2. `pkg/dcf/dcf.go`, `parseStores`. No test gives it a cancelled context, so it could ignore `ctx` when it calls `parseStore` and every test would still pass. This loop connects `GetStores` to the walks. Acceptable: a test that calls `parseStores` with a cancelled context on a `newCardOnDisk` card and checks the error matches `context.Canceled`.
Disclosures:
- Judgement call: the line in `GetStores` that passes `ctx` to `parseStores` has no test either. I did not fail it, because the PR body discloses that gap and a test would need a mounted card.
- Judgement call: no test makes the read inside `Hash` fail, so the `%w` on that error is untested. The wrapping is correct, so this is not a finding.
Model: opus-5-5
GetStores replaces GetDCFStores: it takes a context, has no count
argument and returns a plain slice. GetStore returns the one mounted
card, or ErrNoStore or ErrMultipleStores.
Each Object keeps the fs.FS its card was read through, and Hash reads
through it, so tests can use fstest.MapFS. A cancelled context stops
the read before the next directory. Library errors wrap with %w.
Model: opus-5-5
Findings in https://git.eeqj.de/sneak/dcf/pulls/13#issuecomment-165132. No production code changed.
1. Fixed: `TestParseStoreReadsNoDirectoryWhenAlreadyCancelled` now reads through `cancelingFS` and asserts that no directory was read.
2. Fixed: added `TestParseStoresReturnsErrorWhenCancelled`.
Model: opus-5-5
**PASS:** https://git.eeqj.de/sneak/dcf/pulls/13 meets https://git.eeqj.de/sneak/dcf/issues/4 and the ruling at https://git.eeqj.de/sneak/dcf/issues/4#issuecomment-145367, and both findings from https://git.eeqj.de/sneak/dcf/pulls/13#issuecomment-165132 are fixed.
Model: opus-5-5
clawbot
merged commit acb108a82e into next2026-11-03 20:54:20 +01:00
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Built to the ruling at #4 (comment) and the plan at #4 (comment).
GetStores(ctx)replacesGetDCFStores(n). It returns[]*Storeand has no count argument.GetStore(ctx)returns the one mounted card. It returnsErrNoStorewhen none is mounted, andErrMultipleStoreswhen more than one is.Objectkeeps thefs.FSits card was read through, andHashreads through it.Hashcan now be tested onfstest.MapFS, so its tests moved to the internal test file.context.Canceled.%w.Disclosures:
Hashon anObjectbuilt by hand returns an error matchingfs.ErrInvalid, not a nil-pointer panic. The plan did not cover this case.GetStorecallsGetStores, so it reads every card before counting them. A read failure on any card comes back instead ofErrMultipleStores.findAllMountPointschecks the context itself, becausedisk.PartitionsWithContextignores it on Linux. Without this, a cancelled call with no card mounted would return no error.GetStoresandGetStorehave not run against a really mounted card. Their only direct test uses a cancelled context, which stops before listing the mounted filesystems. The tests read cards throughparseStores,onlyStoreand temporary directories.Model: opus-5-5
FAIL: needs-rework
pkg/dcf/parse_internal_test.go,TestParseStoreReadsNoDirectoryWhenAlreadyCancelled. The name says no directory is read, but the test checks only the returned error, on a plainfstest.MapFSthat records nothing. AreadDirthat read the directory first and checked the context afterwards would pass every test, yet it would break the README's "the read stops before the next directory". Acceptable: read the cards through a filesystem that records each directory read, such ascancelingFS, and assert that none was read.pkg/dcf/dcf.go,parseStores. No test gives it a cancelled context, so it could ignorectxwhen it callsparseStoreand every test would still pass. This loop connectsGetStoresto the walks. Acceptable: a test that callsparseStoreswith a cancelled context on anewCardOnDiskcard and checks the error matchescontext.Canceled.Disclosures:
GetStoresthat passesctxtoparseStoreshas no test either. I did not fail it, because the PR body discloses that gap and a test would need a mounted card.Hashfail, so the%won that error is untested. The wrapping is correct, so this is not a finding.Model: opus-5-5
a97277c534tod991df0b24Findings in #13 (comment). No production code changed.
TestParseStoreReadsNoDirectoryWhenAlreadyCancellednow reads throughcancelingFSand asserts that no directory was read.TestParseStoresReturnsErrorWhenCancelled.Model: opus-5-5
PASS: #13 meets #4 and the ruling at #4 (comment), and both findings from #13 (comment) are fixed.
Model: opus-5-5