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package files_test
import (
"errors"
"os"
"slices"
"sync"
"testing"
"time"
"codeberg.org/lindenii/furgit/internal/testgit"
objectid "codeberg.org/lindenii/furgit/object/id"
refstore "codeberg.org/lindenii/furgit/ref/store"
)
func TestFilesTransactionPackedDeleteFailureLeavesRefsUnchanged(t *testing.T) {
t.Parallel()
testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) { //nolint:thelper
t.Run("packed-refs.lock held", func(t *testing.T) {
t.Parallel()
testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true, RefFormat: "files"})
_, _, packedID := testRepo.MakeCommit(t, "packed")
_, _, looseID := testRepo.MakeCommit(t, "loose")
prefix := "refs/locked-packed-refs"
testRepo.UpdateRef(t, prefix+"/foo", packedID)
testRepo.PackRefs(t, "--all", "--prune")
testRepo.UpdateRef(t, prefix+"/foo", looseID)
unchanged := forEachRefLines(testRepo.Run(t, "for-each-ref", "--format=%(objectname) %(refname)", prefix))
testRepo.WriteFile(t, "packed-refs.lock", []byte{}, 0o644)
store := openFilesStore(t, testRepo, algo)
tx, err := store.BeginTransaction()
if err != nil {
t.Fatalf("BeginTransaction(lock held): %v", err)
}
err = tx.Delete(prefix+"/foo", looseID)
if err != nil {
t.Fatalf("Delete(lock held) queue: %v", err)
}
err = tx.Commit()
if err == nil {
t.Fatal("Commit(lock held) unexpectedly succeeded")
}
actual := forEachRefLines(testRepo.Run(t, "for-each-ref", "--format=%(objectname) %(refname)", prefix))
if !slices.Equal(actual, unchanged) {
t.Fatalf("ShowRef after failed delete = %v, want %v", actual, unchanged)
}
got, err := store.ResolveToDetached(prefix + "/foo")
if err != nil {
t.Fatalf("ResolveToDetached(lock held): %v", err)
}
if got.ID != looseID {
t.Fatalf("ResolveToDetached(lock held) = %s, want %s", got.ID, looseID)
}
gitRoot := testRepo.OpenGitRoot(t)
_, statErr := gitRoot.Stat(prefix + "/foo.lock")
if !errors.Is(statErr, os.ErrNotExist) {
t.Fatalf("unexpected leftover loose lock: %v", statErr)
}
})
t.Run("packed-refs.new exists", func(t *testing.T) {
t.Parallel()
testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true, RefFormat: "files"})
_, _, packedID := testRepo.MakeCommit(t, "packed")
_, _, looseID := testRepo.MakeCommit(t, "loose")
prefix := "refs/failed-packed-refs"
testRepo.UpdateRef(t, prefix+"/foo", packedID)
testRepo.PackRefs(t, "--all", "--prune")
testRepo.UpdateRef(t, prefix+"/foo", looseID)
unchanged := forEachRefLines(testRepo.Run(t, "for-each-ref", "--format=%(objectname) %(refname)", prefix))
testRepo.WriteFile(t, "packed-refs.new", []byte{}, 0o644)
store := openFilesStore(t, testRepo, algo)
tx, err := store.BeginTransaction()
if err != nil {
t.Fatalf("BeginTransaction(new exists): %v", err)
}
err = tx.Delete(prefix+"/foo", looseID)
if err != nil {
t.Fatalf("Delete(new exists) queue: %v", err)
}
err = tx.Commit()
if err == nil {
t.Fatal("Commit(new exists) unexpectedly succeeded")
}
actual := forEachRefLines(testRepo.Run(t, "for-each-ref", "--format=%(objectname) %(refname)", prefix))
if !slices.Equal(actual, unchanged) {
t.Fatalf("ShowRef after failed delete = %v, want %v", actual, unchanged)
}
got, err := store.ResolveToDetached(prefix + "/foo")
if err != nil {
t.Fatalf("ResolveToDetached(new exists): %v", err)
}
if got.ID != looseID {
t.Fatalf("ResolveToDetached(new exists) = %s, want %s", got.ID, looseID)
}
})
})
}
func TestFilesPackedRefDeleteDoesNotCreateDirectories(t *testing.T) {
t.Parallel()
testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) { //nolint:thelper
testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true, RefFormat: "files"})
_, _, commitID := testRepo.MakeCommit(t, "packed-only")
name := "refs/heads/d1/d2/r1"
testRepo.UpdateRef(t, name, commitID)
testRepo.PackRefs(t, "--all", "--prune")
gitRoot := testRepo.OpenGitRoot(t)
_, err := gitRoot.Stat("refs/heads/d1/d2")
if !errors.Is(err, os.ErrNotExist) {
t.Fatalf("refs/heads/d1/d2 unexpectedly exists before delete: %v", err)
}
store := openFilesStore(t, testRepo, algo)
tx, err := store.BeginTransaction()
if err != nil {
t.Fatalf("BeginTransaction: %v", err)
}
err = tx.Delete(name, commitID)
if err != nil {
t.Fatalf("Delete queue: %v", err)
}
err = tx.Commit()
if err != nil {
t.Fatalf("Commit: %v", err)
}
_, err = gitRoot.Stat("refs/heads/d1/d2")
if !errors.Is(err, os.ErrNotExist) {
t.Fatalf("refs/heads/d1/d2 unexpectedly exists after delete: %v", err)
}
_, err = gitRoot.Stat("refs/heads/d1")
if !errors.Is(err, os.ErrNotExist) {
t.Fatalf("refs/heads/d1 unexpectedly exists after delete: %v", err)
}
})
}
func TestFilesPackedRefIgnoresEmptyDirectories(t *testing.T) {
t.Parallel()
testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) { //nolint:thelper
testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true, RefFormat: "files"})
_, _, commitID := testRepo.MakeCommit(t, "packed-visible")
prefix := "refs/e-for-each-ref"
name := prefix + "/foo"
testRepo.UpdateRef(t, name, commitID)
expected := forEachRefLines(testRepo.Run(t, "for-each-ref", "--format=%(objectname) %(refname)", prefix))
testRepo.PackRefs(t, "--all", "--prune")
testRepo.WriteFileAll(t, prefix+"/foo/bar/baz/.keep", []byte{}, 0o755, 0o644)
testRepo.Remove(t, prefix+"/foo/bar/baz/.keep")
store := openFilesStore(t, testRepo, algo)
got, err := store.ResolveToDetached(name)
if err != nil {
t.Fatalf("ResolveToDetached: %v", err)
}
if got.ID != commitID {
t.Fatalf("ResolveToDetached = %s, want %s", got.ID, commitID)
}
actual := make([]string, 0)
listed, err := store.List(prefix + "/*")
if err != nil {
t.Fatalf("List: %v", err)
}
for _, entry := range listed {
actual = append(actual, entry.Name())
}
fullActual := make([]string, 0, len(actual))
for _, name := range actual {
refValue, resolveErr := store.ResolveToDetached(name)
if resolveErr != nil {
t.Fatalf("ResolveToDetached(%q): %v", name, resolveErr)
}
fullActual = append(fullActual, refValue.ID.String()+" "+name)
}
slices.Sort(fullActual)
if !slices.Equal(fullActual, expected) {
t.Fatalf("for-each-ref view = %v, want %v", fullActual, expected)
}
})
}
func TestFilesDeleteWaitsForPackedRefsLockWithoutIntermediateState(t *testing.T) {
t.Parallel()
testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) { //nolint:thelper
testRepo := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: algo, Bare: true, RefFormat: "files"})
_, _, packedID := testRepo.MakeCommit(t, "packed")
_, _, looseID := testRepo.MakeCommit(t, "loose")
prefix := "refs/slow-transaction"
testRepo.UpdateRef(t, prefix+"/foo", packedID)
testRepo.PackRefs(t, "--all", "--prune")
testRepo.UpdateRef(t, prefix+"/foo", looseID)
testRepo.WriteFile(t, "packed-refs.lock", []byte{}, 0o644)
store := openFilesStore(t, testRepo, algo)
tx, err := store.BeginTransaction()
if err != nil {
t.Fatalf("BeginTransaction: %v", err)
}
err = tx.Delete(prefix+"/foo", looseID)
if err != nil {
t.Fatalf("Delete queue: %v", err)
}
done := make(chan error, 1)
var wg sync.WaitGroup
wg.Go(func() {
done <- tx.Commit()
})
time.Sleep(75 * time.Millisecond)
select {
case err := <-done:
t.Fatalf("Commit finished too early: %v", err)
default:
}
got, err := store.ResolveToDetached(prefix + "/foo")
if err != nil {
t.Fatalf("ResolveToDetached while lock held: %v", err)
}
if got.ID != looseID {
t.Fatalf("ResolveToDetached while lock held = %s, want %s", got.ID, looseID)
}
testRepo.Remove(t, "packed-refs.lock")
select {
case err := <-done:
if err != nil {
t.Fatalf("Commit after lock release: %v", err)
}
case <-time.After(2 * time.Second):
t.Fatal("Commit did not finish after lock release")
}
wg.Wait()
_, err = store.Resolve(prefix + "/foo")
if !errors.Is(err, refstore.ErrReferenceNotFound) {
t.Fatalf("Resolve after delete error = %v, want ErrReferenceNotFound", err)
}
})
}
|
