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package furgit
import (
"os"
"path/filepath"
"strings"
"testing"
)
func TestReachabilityCommitsWantHave(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
var commits []string
for i := 0; i < 3; i++ {
path := filepath.Join(workDir, "file.txt")
if err := os.WriteFile(path, []byte{byte('a' + i), '\n'}, 0o644); err != nil {
t.Fatalf("write file: %v", err)
}
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "commit", "-m", "commit")
commits = append(commits, gitCmd(t, repoPath, nil, "rev-parse", "HEAD"))
}
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
wantID, _ := repo.ParseHash(commits[2])
haveID, _ := repo.ParseHash(commits[1])
walk, err := repo.ReachableObjects(ReachabilityQuery{
Wants: []Hash{wantID},
Haves: []Hash{haveID},
Mode: ReachabilityCommitsOnly,
})
if err != nil {
t.Fatalf("ReachableObjects failed: %v", err)
}
seen := make(map[Hash]ReachableObject)
for obj := range walk.Seq() {
seen[obj.ID] = obj
if obj.Type != ObjectTypeCommit {
t.Fatalf("unexpected object type: %v", obj.Type)
}
}
if err := walk.Err(); err != nil {
t.Fatalf("Reachability walk error: %v", err)
}
headID := wantID
parentID, _ := repo.ParseHash(commits[1])
rootID, _ := repo.ParseHash(commits[0])
if _, ok := seen[headID]; !ok {
t.Fatalf("missing head commit")
}
if _, ok := seen[parentID]; !ok {
t.Fatalf("missing parent commit")
}
if _, ok := seen[rootID]; !ok {
t.Fatalf("missing root commit")
}
if seen[headID].InHave {
t.Fatalf("head commit incorrectly marked InHave")
}
if !seen[parentID].InHave || !seen[rootID].InHave {
t.Fatalf("expected parent and root commits to be InHave")
}
inHave, err := walk.HaveContains(parentID)
if err != nil {
t.Fatalf("HaveContains failed: %v", err)
}
if !inHave {
t.Fatalf("expected parent to be reachable from have")
}
}
func TestReachabilityAllObjects(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
if err := os.WriteFile(filepath.Join(workDir, "file1.txt"), []byte("one\n"), 0o644); err != nil {
t.Fatalf("write file1: %v", err)
}
if err := os.Mkdir(filepath.Join(workDir, "dir"), 0o755); err != nil {
t.Fatalf("mkdir dir: %v", err)
}
if err := os.WriteFile(filepath.Join(workDir, "dir", "file2.txt"), []byte("two\n"), 0o644); err != nil {
t.Fatalf("write file2: %v", err)
}
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "commit", "-m", "commit")
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
head := gitCmd(t, repoPath, nil, "rev-parse", "HEAD")
wantID, _ := repo.ParseHash(head)
walk, err := repo.ReachableObjects(ReachabilityQuery{
Wants: []Hash{wantID},
Mode: ReachabilityAllObjects,
})
if err != nil {
t.Fatalf("ReachableObjects failed: %v", err)
}
seen := make(map[Hash]ObjectType)
for obj := range walk.Seq() {
seen[obj.ID] = obj.Type
}
if err := walk.Err(); err != nil {
t.Fatalf("Reachability walk error: %v", err)
}
treeStr := gitCmd(t, repoPath, nil, "show", "-s", "--format=%T", head)
treeID, _ := repo.ParseHash(treeStr)
lsTree := gitCmd(t, repoPath, nil, "ls-tree", "-r", treeStr)
fields := strings.Fields(lsTree)
if len(fields) < 3 {
t.Fatalf("unexpected ls-tree output: %q", lsTree)
}
blobID, _ := repo.ParseHash(fields[2])
if seen[wantID] != ObjectTypeCommit {
t.Fatalf("missing commit in reachability walk")
}
if seen[treeID] != ObjectTypeTree {
t.Fatalf("missing tree in reachability walk")
}
if seen[blobID] != ObjectTypeBlob {
t.Fatalf("missing blob in reachability walk")
}
}
func TestReachabilityStopAtHaves(t *testing.T) {
repoPath, cleanup := setupTestRepo(t)
defer cleanup()
workDir, cleanupWork := setupWorkDir(t)
defer cleanupWork()
var commits []string
for i := 0; i < 3; i++ {
path := filepath.Join(workDir, "file.txt")
if err := os.WriteFile(path, []byte{byte('a' + i), '\n'}, 0o644); err != nil {
t.Fatalf("write file: %v", err)
}
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "add", ".")
gitCmd(t, repoPath, nil, "--work-tree="+workDir, "commit", "-m", "commit")
commits = append(commits, gitCmd(t, repoPath, nil, "rev-parse", "HEAD"))
}
repo, err := OpenRepository(repoPath)
if err != nil {
t.Fatalf("OpenRepository failed: %v", err)
}
defer func() { _ = repo.Close() }()
wantID, _ := repo.ParseHash(commits[2])
haveID, _ := repo.ParseHash(commits[1])
walk, err := repo.ReachableObjects(ReachabilityQuery{
Wants: []Hash{wantID},
Haves: []Hash{haveID},
Mode: ReachabilityCommitsOnly,
StopAtHaves: true,
})
if err != nil {
t.Fatalf("ReachableObjects failed: %v", err)
}
var got []Hash
for obj := range walk.Seq() {
got = append(got, obj.ID)
if obj.InHave {
t.Fatalf("unexpected InHave object in send set")
}
}
if err := walk.Err(); err != nil {
t.Fatalf("Reachability walk error: %v", err)
}
if len(got) != 1 || got[0] != wantID {
t.Fatalf("StopAtHaves mismatch: got %d objects", len(got))
}
}
|
