ref: 1ea061c92ca6ad435c00bea458b8f24a5e1a822a
dir: /refs_test.go/
package furgit
import (
"os"
"path/filepath"
"strings"
"testing"
)
func TestResolveRef(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
err := os.WriteFile(filepath.Join(workDir, "test.txt"), []byte("content"), 0o644)
if err != nil {
t.Fatalf("Failed to write test.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "test")
commitHash := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commitHash)
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
hashObj, _ := repo.ParseHash(commitHash)
resolved, err := repo.ResolveRef("refs/heads/main")
if err != nil {
t.Fatalf("ResolveRef failed: %v", err)
}
if resolved.Kind != RefKindDetached {
t.Fatalf("expected detached ref, got %v", resolved.Kind)
}
if resolved.Hash != hashObj {
t.Errorf("resolved hash: got %s, want %s", resolved.Hash, hashObj)
}
gitRevParse := gitCmd(t, repoPath, "rev-parse", "refs/heads/main")
if resolved.Hash.String() != gitRevParse {
t.Errorf("furgit resolved %s, git resolved %s", resolved.Hash, gitRevParse)
}
_, err = repo.ResolveRef("refs/heads/nonexistent")
if err == nil {
t.Error("expected error for nonexistent ref")
}
}
func TestResolveHEAD(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
err := os.WriteFile(filepath.Join(workDir, "test.txt"), []byte("content"), 0o644)
if err != nil {
t.Fatalf("failed to write test.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "test")
commitHash := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commitHash)
gitCmd(t, repoPath, "symbolic-ref", "HEAD", "refs/heads/main")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
ref, err := repo.ResolveRef("HEAD")
if err != nil {
t.Fatalf("ResolveRef(HEAD) failed: %v", err)
}
if ref.Kind != RefKindSymbolic {
t.Fatalf("HEAD kind: got %v, want %v", ref.Kind, RefKindSymbolic)
}
if ref.Ref != "refs/heads/main" {
t.Errorf("HEAD symbolic ref: got %q, want %q", ref.Ref, "refs/heads/main")
}
gitSymRef := gitCmd(t, repoPath, "symbolic-ref", "HEAD")
if ref.Ref != gitSymRef {
t.Errorf("furgit resolved %v, git resolved %s", ref.Ref, gitSymRef)
}
}
func TestPackedRefs(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
err := os.WriteFile(filepath.Join(workDir, "test.txt"), []byte("content1"), 0o644)
if err != nil {
t.Fatalf("failed to write test.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "commit1")
commit1Hash := gitCmd(t, repoPath, "rev-parse", "HEAD")
err = os.WriteFile(filepath.Join(workDir, "test2.txt"), []byte("content2"), 0o644)
if err != nil {
t.Fatalf("failed to write test2.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "commit2")
commit2Hash := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/branch1", commit1Hash)
gitCmd(t, repoPath, "update-ref", "refs/heads/branch2", commit2Hash)
gitCmd(t, repoPath, "update-ref", "refs/tags/v1.0", commit1Hash)
gitCmd(t, repoPath, "pack-refs", "--all")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
hash1, _ := repo.ParseHash(commit1Hash)
hash2, _ := repo.ParseHash(commit2Hash)
resolved1, err := repo.ResolveRef("refs/heads/branch1")
if err != nil {
t.Fatalf("ResolveRef branch1 failed: %v", err)
}
if resolved1.Kind != RefKindDetached || resolved1.Hash != hash1 {
t.Errorf("branch1: got %s, want %s", resolved1.Hash, hash1)
}
gitResolved1 := gitCmd(t, repoPath, "rev-parse", "refs/heads/branch1")
if resolved1.Hash.String() != gitResolved1 {
t.Errorf("furgit resolved %s, git resolved %s", resolved1.Hash, gitResolved1)
}
resolved2, err := repo.ResolveRef("refs/heads/branch2")
if err != nil {
t.Fatalf("ResolveRef branch2 failed: %v", err)
}
if resolved2.Kind != RefKindDetached || resolved2.Hash != hash2 {
t.Errorf("branch2: got %s, want %s", resolved2.Hash, hash2)
}
resolvedTag, err := repo.ResolveRef("refs/tags/v1.0")
if err != nil {
t.Fatalf("ResolveRef tag failed: %v", err)
}
if resolvedTag.Kind != RefKindDetached || resolvedTag.Hash != hash1 {
t.Errorf("tag: got %s, want %s", resolvedTag.Hash, hash1)
}
}
func TestResolveRefFully(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
// Create an initial commit
err := os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("content"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "init")
commit := gitCmd(t, repoPath, "rev-parse", "HEAD")
// Create two layers of symbolic refs
gitCmd(t, repoPath, "symbolic-ref", "refs/heads/level1", "refs/heads/level2")
gitCmd(t, repoPath, "symbolic-ref", "refs/heads/level2", "refs/heads/main")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commit)
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
commitHash, err := repo.ParseHash(commit)
if err != nil {
t.Fatalf("ParseHash failed: %v", err)
}
resolved, err := repo.ResolveRefFully("refs/heads/level1")
if err != nil {
t.Fatalf("ResolveRefFully failed: %v", err)
}
if resolved.Hash != commitHash {
t.Errorf("ResolveRefFully: got hash %s, want %s", resolved.Hash, commitHash)
}
}
func TestResolveRefFullySymbolicCycle(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
gitCmd(t, repoPath, "symbolic-ref", "refs/heads/A", "refs/heads/B")
gitCmd(t, repoPath, "symbolic-ref", "refs/heads/B", "refs/heads/A")
_, err = repo.ResolveRefFully("refs/heads/A")
if err == nil {
t.Fatalf("ResolveRefFully should fail on a symbolic cycle")
}
if !strings.Contains(err.Error(), "cycle") {
t.Fatalf("unexpected error for symbolic cycle: %v", err)
}
}
func TestResolveRefHashInput(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
err := os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("content"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "init")
commitHash := gitCmd(t, repoPath, "rev-parse", "HEAD")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
hashObj, err := repo.ParseHash(commitHash)
if err != nil {
t.Fatalf("ParseHash failed: %v", err)
}
ref, err := repo.ResolveRef(commitHash)
if err != nil {
t.Fatalf("ResolveRef(hash) failed: %v", err)
}
if ref.Kind != RefKindDetached {
t.Fatalf("expected RefKindDetached, got %v", ref.Kind)
}
if ref.Hash != hashObj {
t.Fatalf("hash mismatch: got %s, want %s", ref.Hash, hashObj)
}
hashRef, err := repo.ResolveRefFully(commitHash)
if err != nil {
t.Fatalf("ResolveRefFully(hash) failed: %v", err)
}
if hashRef.Hash != hashObj {
t.Fatalf("hash mismatch: got %s, want %s", hashRef.Hash, hashObj)
}
_, err = repo.ResolveRef("this_is_not_a_hash")
if err == nil {
t.Fatalf("expected error for invalid hash input")
}
}
func TestListRefsLooseOverridesPacked(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
gitCmd(t, repoPath, "symbolic-ref", "HEAD", "refs/heads/main")
err := os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("one"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "c1")
commit1 := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commit1)
gitCmd(t, repoPath, "update-ref", "refs/heads/feature", commit1)
gitCmd(t, repoPath, "pack-refs", "--all", "--prune")
err = os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("two"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "c2")
commit2 := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commit2)
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
hash1, _ := repo.ParseHash(commit1)
hash2, _ := repo.ParseHash(commit2)
refs, err := repo.ListRefs("refs/heads/*")
if err != nil {
t.Fatalf("ListRefs failed: %v", err)
}
if len(refs) != 2 {
t.Fatalf("expected 2 refs, got %d", len(refs))
}
got := make(map[string]Ref, len(refs))
for _, r := range refs {
if _, exists := got[r.Name]; exists {
t.Fatalf("duplicate ref %q in results", r.Name)
}
got[r.Name] = r
}
mainRef, ok := got["refs/heads/main"]
if !ok {
t.Fatalf("missing refs/heads/main in results")
}
if mainRef.Kind != RefKindDetached || mainRef.Hash != hash2 {
t.Fatalf("refs/heads/main hash: got %s (kind %v), want %s", mainRef.Hash, mainRef.Kind, hash2)
}
featureRef, ok := got["refs/heads/feature"]
if !ok {
t.Fatalf("missing refs/heads/feature in results")
}
if featureRef.Kind != RefKindDetached || featureRef.Hash != hash1 {
t.Fatalf("refs/heads/feature hash: got %s (kind %v), want %s", featureRef.Hash, featureRef.Kind, hash1)
}
}
func TestListRefsPatternFiltering(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
gitCmd(t, repoPath, "symbolic-ref", "HEAD", "refs/heads/main")
err := os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("one"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "c1")
commit1 := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commit1)
gitCmd(t, repoPath, "update-ref", "refs/heads/feature", commit1)
gitCmd(t, repoPath, "pack-refs", "--all", "--prune")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
hash1, _ := repo.ParseHash(commit1)
refs, err := repo.ListRefs("refs/heads/fea*")
if err != nil {
t.Fatalf("ListRefs failed: %v", err)
}
if len(refs) != 1 {
t.Fatalf("expected 1 ref, got %d", len(refs))
}
if refs[0].Name != "refs/heads/feature" {
t.Fatalf("unexpected ref name: got %q, want %q", refs[0].Name, "refs/heads/feature")
}
if refs[0].Kind != RefKindDetached || refs[0].Hash != hash1 {
t.Fatalf("refs/heads/feature hash: got %s (kind %v), want %s", refs[0].Hash, refs[0].Kind, hash1)
}
}
func TestListRefsPackedPatterns(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
gitCmd(t, repoPath, "symbolic-ref", "HEAD", "refs/heads/main")
err := os.WriteFile(filepath.Join(workDir, "file.txt"), []byte("one"), 0o644)
if err != nil {
t.Fatalf("failed to write file.txt: %v", err)
}
gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "c1")
commit := gitCmd(t, repoPath, "rev-parse", "HEAD")
gitCmd(t, repoPath, "update-ref", "refs/heads/main", commit)
gitCmd(t, repoPath, "update-ref", "refs/heads/feature/one", commit)
gitCmd(t, repoPath, "update-ref", "refs/notes/review", commit)
gitCmd(t, repoPath, "update-ref", "refs/tags/v1", commit)
gitCmd(t, repoPath, "pack-refs", "--all", "--prune")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
tests := []struct {
pattern string
want []string
}{
{
pattern: "refs/heads/*",
want: []string{"refs/heads/main"},
},
{
pattern: "refs/heads/*/*",
want: []string{"refs/heads/feature/one"},
},
{
pattern: "refs/*/feature/one",
want: []string{"refs/heads/feature/one"},
},
{
pattern: "refs/heads/feat?re/one",
want: []string{"refs/heads/feature/one"},
},
{
pattern: "refs/tags/v[0-9]",
want: []string{"refs/tags/v1"},
},
{
pattern: "refs/*/*",
want: []string{"refs/heads/main", "refs/notes/review", "refs/tags/v1"},
},
}
for _, tt := range tests {
t.Run(tt.pattern, func(t *testing.T) {
refs, err := repo.ListRefs(tt.pattern)
if err != nil {
t.Fatalf("ListRefs(%q) failed: %v", tt.pattern, err)
}
got := make(map[string]struct{}, len(refs))
for _, r := range refs {
got[r.Name] = struct{}{}
}
want := make(map[string]struct{}, len(tt.want))
for _, w := range tt.want {
want[w] = struct{}{}
}
if len(got) != len(want) {
t.Fatalf("ListRefs(%q) returned %d refs, want %d", tt.pattern, len(got), len(want))
}
for name := range got {
if _, ok := want[name]; !ok {
t.Fatalf("ListRefs(%q) unexpected ref %q", tt.pattern, name)
}
}
})
}
}
func TestRefShort(t *testing.T) {
t.Run("unambiguous", func(t *testing.T) {
ref := Ref{Name: "refs/heads/main"}
short := ref.Short([]Ref{ref}, false)
if short != "main" {
t.Fatalf("expected short name %q, got %q", "main", short)
}
})
t.Run("ambiguous", func(t *testing.T) {
ref := Ref{Name: "refs/heads/main"}
tags := Ref{Name: "refs/tags/main"}
short := ref.Short([]Ref{ref, tags}, false)
if short != "heads/main" {
t.Fatalf("expected ambiguous ref to shorten to %q, got %q", "heads/main", short)
}
})
t.Run("strict", func(t *testing.T) {
ref := Ref{Name: "refs/heads/main"}
remoteHead := Ref{Name: "refs/remotes/main/HEAD"}
shortNonStrict := ref.Short([]Ref{ref, remoteHead}, false)
if shortNonStrict != "main" {
t.Fatalf("expected non-strict short name %q, got %q", "main", shortNonStrict)
}
shortStrict := ref.Short([]Ref{ref, remoteHead}, true)
if shortStrict != "heads/main" {
t.Fatalf("expected strict ambiguity to shorten to %q, got %q", "heads/main", shortStrict)
}
})
}