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package repository_test
import (
"os"
"strings"
"testing"
"codeberg.org/lindenii/furgit/object"
"codeberg.org/lindenii/furgit/repository"
)
const benchRepoPathEnv = "FURGIT_BENCH_REPO"
// BenchmarkTraverseHeadTree measures iterative traversal of HEAD's root tree.
//
// Set FURGIT_BENCH_REPO to a repository path (typically .git or a bare repo)
// before running this benchmark.
func BenchmarkTraverseHeadTree(b *testing.B) {
repoPath := strings.TrimSpace(os.Getenv(benchRepoPathEnv))
if repoPath == "" {
b.Fatalf("missing %s", benchRepoPathEnv)
}
root, err := os.OpenRoot(repoPath)
if err != nil {
b.Fatalf("os.OpenRoot(%q): %v", repoPath, err)
}
b.Cleanup(func() {
_ = root.Close()
})
repo, err := repository.Open(root)
if err != nil {
b.Fatalf("repository.Open(root for %q): %v", repoPath, err)
}
b.Cleanup(func() {
_ = repo.Close()
})
head, err := repo.ResolveRefFully("HEAD")
if err != nil {
b.Fatalf("ResolveRefFully(HEAD): %v", err)
}
stored, err := repo.ReadStored(head.ID)
if err != nil {
b.Fatalf("ReadStored(%s): %v", head.ID, err)
}
commit, ok := stored.Object().(*object.Commit)
if !ok {
b.Fatalf("HEAD object type %T, want *object.Commit", stored.Object())
}
b.ReportAllocs()
b.ResetTimer()
var lastCount int
for b.Loop() {
lastCount, err = traverseTreeIter(repo, commit.Tree)
if err != nil {
b.Fatalf("traverseTreeIter: %v", err)
}
}
b.StopTimer()
if lastCount <= 0 {
b.Fatalf("traverseTreeIter count = %d, want > 0", lastCount)
}
}
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