Revert "reachability: Add basic reachability API"

This reverts commit 1fa0d2bcfa7aebdcec8644f53acc58465c109b72.

1 files changed, 0 insertions, 196 deletions

diff --git a/reachability_test.go b/reachability_test.go
deleted file mode 100644
index 2a2d5060..00000000
--- a/reachability_test.go
+++ /dev/null
@@ -1,196 +0,0 @@
-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, "--work-tree="+workDir, "add", ".")
-		gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "commit")
-		commits = append(commits, gitCmd(t, repoPath, "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, "--work-tree="+workDir, "add", ".")
-	gitCmd(t, repoPath, "--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, "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, "show", "-s", "--format=%T", head)
-	treeID, _ := repo.ParseHash(treeStr)
-	lsTree := gitCmd(t, repoPath, "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, "--work-tree="+workDir, "add", ".")
-		gitCmd(t, repoPath, "--work-tree="+workDir, "commit", "-m", "commit")
-		commits = append(commits, gitCmd(t, repoPath, "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))
-	}
-}