krino: 0.0.5 — keyword cache, t and d in reviewv0.0.5

1 files changed, 26 insertions, 0 deletions

diff --git a/internal/scan/scan_test.go b/internal/scan/scan_test.go
index a245893..e9aeb73 100644
--- a/internal/scan/scan_test.go
+++ b/internal/scan/scan_test.go
@@ -293,3 +293,29 @@ func TestTooBig(t *testing.T) {
 		t.Errorf("MaxSize 0 skipped files: %v", skipped(r))
 	}
 }
+
+// TestFilesCarryInode: a walked file carries its device and inode, which a
+// rename keeps.
+func TestFilesCarryInode(t *testing.T) {
+	root := tree(t)
+	p := filepath.Join(root, "a.txt")
+	if err := os.WriteFile(p, []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	old := now.Add(-time.Hour)
+	os.Chtimes(p, old, old)
+	first, err := Walk(root, Options{Now: now})
+	if err != nil || len(first.Files) != 1 {
+		t.Fatalf("walk: %v %+v", err, first)
+	}
+	if first.Files[0].Ino == 0 {
+		t.Fatal("no inode on a unix filesystem")
+	}
+	if err := os.Rename(p, filepath.Join(root, "b.txt")); err != nil {
+		t.Fatal(err)
+	}
+	second, _ := Walk(root, Options{Now: now})
+	if len(second.Files) != 1 || second.Files[0].Ino != first.Files[0].Ino || second.Files[0].Dev != first.Files[0].Dev {
+		t.Errorf("rename changed the identity: %+v then %+v", first.Files[0], second.Files)
+	}
+}