diff options
Diffstat (limited to 'difftrees_test.go')
| -rw-r--r-- | difftrees_test.go | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/difftrees_test.go b/difftrees_test.go deleted file mode 100644 index b8b89bb0..00000000 --- a/difftrees_test.go +++ /dev/null @@ -1,223 +0,0 @@ -package furgit - -import ( - "os" - "path/filepath" - "testing" -) - -func TestDiffTreesComplexNestedChanges(t *testing.T) { - repoPath, cleanup := setupTestRepo(t) - defer cleanup() - - workDir, cleanupWork := setupWorkDir(t) - defer cleanupWork() - - writeTestFile(t, filepath.Join(workDir, "README.md"), "initial readme\n") - writeTestFile(t, filepath.Join(workDir, "unchanged.txt"), "leave me as-is\n") - writeTestFile(t, filepath.Join(workDir, "dir", "file_a.txt"), "alpha v1\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "file_b.txt"), "beta v1\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "file_c.txt"), "gamma v1\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "old.txt"), "old branch\n") - writeTestFile(t, filepath.Join(workDir, "treeB", "legacy.txt"), "legacy root\n") - writeTestFile(t, filepath.Join(workDir, "treeB", "sub", "retired.txt"), "retired\n") - - gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".") - baseTreeHash := gitCmd(t, repoPath, "--work-tree="+workDir, "write-tree") - - writeTestFile(t, filepath.Join(workDir, "README.md"), "updated readme\n") - gitCmd(t, repoPath, "--work-tree="+workDir, "rm", "-f", "dir/file_a.txt") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "file_b.txt"), "beta v2\n") - gitCmd(t, repoPath, "--work-tree="+workDir, "rm", "-f", "dir/nested/deeper/old.txt") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "new.txt"), "new branch entry\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "branch", "info.md"), "branch info\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "branch", "subbranch", "leaf.txt"), "leaf data\n") - writeTestFile(t, filepath.Join(workDir, "dir", "nested", "deeper", "branch", "subbranch", "deep", "final.txt"), "final artifact\n") - writeTestFile(t, filepath.Join(workDir, "dir", "newchild.txt"), "brand new sibling\n") - gitCmd(t, repoPath, "--work-tree="+workDir, "rm", "-r", "-f", "treeB") - writeTestFile(t, filepath.Join(workDir, "features", "alpha", "README.md"), "alpha docs\n") - writeTestFile(t, filepath.Join(workDir, "features", "alpha", "beta", "gamma.txt"), "gamma payload\n") - writeTestFile(t, filepath.Join(workDir, "modules", "v2", "core", "main.go"), "package core\n") - writeTestFile(t, filepath.Join(workDir, "root_addition.txt"), "root level file\n") - - gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".") - updatedTreeHash := gitCmd(t, repoPath, "--work-tree="+workDir, "write-tree") - - repo, err := OpenRepository(repoPath) - if err != nil { - t.Fatalf("OpenRepository failed: %v", err) - } - defer func() { - _ = repo.Close() - }() - - baseTree := readStoredTree(t, repo, baseTreeHash) - updatedTree := readStoredTree(t, repo, updatedTreeHash) - - diffs, err := repo.DiffTrees(baseTree, updatedTree) - if err != nil { - t.Fatalf("DiffTrees failed: %v", err) - } - - expected := map[string]diffExpectation{ - "README.md": {kind: TreeDiffEntryKindModified}, - "dir": {kind: TreeDiffEntryKindModified}, - "dir/file_a.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "dir/newchild.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested": {kind: TreeDiffEntryKindModified}, - "dir/nested/file_b.txt": {kind: TreeDiffEntryKindModified}, - "dir/nested/deeper": {kind: TreeDiffEntryKindModified}, - "dir/nested/deeper/old.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "dir/nested/deeper/new.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch/info.md": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch/subbranch": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch/subbranch/leaf.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch/subbranch/deep": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "dir/nested/deeper/branch/subbranch/deep/final.txt": { - kind: TreeDiffEntryKindAdded, - oldNil: true, - }, - "features": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "features/alpha": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "features/alpha/README.md": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "features/alpha/beta": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "features/alpha/beta/gamma.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "modules": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "modules/v2": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "modules/v2/core": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "modules/v2/core/main.go": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "root_addition.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "treeB": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "treeB/legacy.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "treeB/sub": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "treeB/sub/retired.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - } - - checkDiffs(t, diffs, expected) -} - -func TestDiffTreesDirectoryAddDeleteDeep(t *testing.T) { - repoPath, cleanup := setupTestRepo(t) - defer cleanup() - - workDir, cleanupWork := setupWorkDir(t) - defer cleanupWork() - - writeTestFile(t, filepath.Join(workDir, "old_dir", "old.txt"), "stale directory\n") - writeTestFile(t, filepath.Join(workDir, "old_dir", "sub1", "legacy.txt"), "legacy path\n") - writeTestFile(t, filepath.Join(workDir, "old_dir", "sub1", "nested", "end.txt"), "legacy end\n") - - gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".") - originalTreeHash := gitCmd(t, repoPath, "--work-tree="+workDir, "write-tree") - - gitCmd(t, repoPath, "--work-tree="+workDir, "rm", "-r", "-f", "old_dir") - writeTestFile(t, filepath.Join(workDir, "fresh", "alpha", "beta", "new.txt"), "brand new directory\n") - writeTestFile(t, filepath.Join(workDir, "fresh", "alpha", "docs", "note.md"), "docs note\n") - writeTestFile(t, filepath.Join(workDir, "fresh", "alpha", "beta", "gamma", "delta.txt"), "delta payload\n") - - gitCmd(t, repoPath, "--work-tree="+workDir, "add", ".") - nextTreeHash := gitCmd(t, repoPath, "--work-tree="+workDir, "write-tree") - - repo, err := OpenRepository(repoPath) - if err != nil { - t.Fatalf("OpenRepository failed: %v", err) - } - defer func() { - _ = repo.Close() - }() - - originalTree := readStoredTree(t, repo, originalTreeHash) - nextTree := readStoredTree(t, repo, nextTreeHash) - - diffs, err := repo.DiffTrees(originalTree, nextTree) - if err != nil { - t.Fatalf("DiffTrees failed: %v", err) - } - - expected := map[string]diffExpectation{ - "fresh": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/beta": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/beta/new.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/beta/gamma": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/beta/gamma/delta.txt": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/docs": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "fresh/alpha/docs/note.md": {kind: TreeDiffEntryKindAdded, oldNil: true}, - "old_dir": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "old_dir/old.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "old_dir/sub1": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "old_dir/sub1/legacy.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "old_dir/sub1/nested": {kind: TreeDiffEntryKindDeleted, newNil: true}, - "old_dir/sub1/nested/end.txt": {kind: TreeDiffEntryKindDeleted, newNil: true}, - } - - checkDiffs(t, diffs, expected) -} - -type diffExpectation struct { - kind TreeDiffEntryKind - oldNil bool - newNil bool -} - -func writeTestFile(t *testing.T, path string, data string) { - t.Helper() - if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil { - t.Fatalf("failed to create directory for %s: %v", path, err) - } - if err := os.WriteFile(path, []byte(data), 0o644); err != nil { - t.Fatalf("failed to write %s: %v", path, err) - } -} - -func readStoredTree(t *testing.T, repo *Repository, hashStr string) *StoredTree { - t.Helper() - hash, err := repo.ParseHash(hashStr) - if err != nil { - t.Fatalf("ParseHash failed: %v", err) - } - obj, err := repo.ReadObject(hash) - if err != nil { - t.Fatalf("ReadObject failed: %v", err) - } - tree, ok := obj.(*StoredTree) - if !ok { - t.Fatalf("expected *StoredTree, got %T", obj) - } - return tree -} - -func checkDiffs(t *testing.T, diffs []TreeDiffEntry, expected map[string]diffExpectation) { - t.Helper() - got := make(map[string]TreeDiffEntry, len(diffs)) - for _, diff := range diffs { - key := string(diff.Path) - if _, exists := got[key]; exists { - t.Fatalf("duplicate diff entry for %q", key) - } - got[key] = diff - } - if len(got) != len(expected) { - t.Fatalf("unexpected diff count: got %d, want %d", len(got), len(expected)) - } - - for path, want := range expected { - diff, ok := got[path] - if !ok { - t.Fatalf("missing diff for %q", path) - } - if diff.Kind != want.kind { - t.Errorf("%s kind: got %v, want %v", path, diff.Kind, want.kind) - } - if (diff.Old == nil) != want.oldNil { - t.Errorf("%s old nil mismatch: got %v, want %v", path, diff.Old == nil, want.oldNil) - } - if (diff.New == nil) != want.newNil { - t.Errorf("%s new nil mismatch: got %v, want %v", path, diff.New == nil, want.newNil) - } - if diff.Kind == TreeDiffEntryKindModified && diff.Old != nil && diff.New != nil && diff.Old.ID == diff.New.ID { - t.Errorf("%s: modified entry should change IDs", path) - } - } -} |