1 files changed, 63 insertions, 0 deletions
diff --git a/cmd/krino/sort_test.go b/cmd/krino/sort_test.go
index e482f44..fa9a7ca 100644
--- a/cmd/krino/sort_test.go
+++ b/cmd/krino/sort_test.go
@@ -110,3 +110,66 @@ func TestAllSkippedDirectoryReportsZeroAndLogsNothing(t *testing.T) {
 		t.Errorf("journal gained entries for a directory with nothing to act on:\n%s", data)
 	}
 }
+
+// TestPermanentDeleteOfDuplicatesUnderOverlappingDirKeepsACopy drives the
+// whole run end to end on the shape where a (duplicate "DIR") overlaps the
+// scanned tree: a recursive root holding Archive/x.pdf and a loose, older
+// x-copy.pdf with the same bytes, and a rule that permanently deletes
+// duplicates of anything under Archive. Whatever the verdicts, applying
+// the plan must leave the content on disk; the expected outcome is that
+// the archived copy stays and only the loose one goes.
+func TestPermanentDeleteOfDuplicatesUnderOverlappingDirKeepsACopy(t *testing.T) {
+	h := home(t)
+	dl := filepath.Join(h, "dl")
+	content := []byte("%PDF acme statement")
+	archived := filepath.Join(dl, "Archive", "x.pdf")
+	loose := filepath.Join(dl, "x-copy.pdf")
+	old := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
+	for p, mt := range map[string]time.Time{archived: old.Add(time.Hour), loose: old} {
+		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(p, content, 0o644); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.Chtimes(p, mt, mt); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if code, _, errOut := runCLI(t, "init"); code != 0 {
+		t.Fatal(errOut)
+	}
+	if code, _, errOut := runCLI(t, "new", "dl", dl); code != 0 {
+		t.Fatal(errOut)
+	}
+	rules := "(path \"~/dl\")\n(recursive yes)\n(min-age 0s)\n" +
+		"(rule \"dups\" (when (duplicate \"Archive\")) (delete permanent))\n"
+	if err := os.WriteFile(filepath.Join(h, ".config", "krino", "dirs", "dl.conf"), []byte(rules), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	code, out, errOut := runCLI(t, "-y")
+
+	var copies []string
+	err := filepath.WalkDir(dl, func(p string, d os.DirEntry, err error) error {
+		if err != nil || !d.Type().IsRegular() {
+			return err
+		}
+		if b, err := os.ReadFile(p); err == nil && string(b) == string(content) {
+			copies = append(copies, p)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(copies) == 0 {
+		t.Fatalf("every copy was deleted (exit %d)\nstdout:\n%s\nstderr:\n%s", code, out, errOut)
+	}
+	if code != 0 {
+		t.Fatalf("run: %d %s", code, errOut)
+	}
+	if len(copies) != 1 || copies[0] != archived {
+		t.Errorf("copies left = %v, want only %s", copies, archived)
+	}
+}