Hello world 👋

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/clipboard/clipboard_test.go

@@ -0,0 +1,33 @@
+package clipboard
+
+import "testing"
+
+func fakeNative() (*Clipboard, *string) {
+	var board string
+	return &Clipboard{
+		native: true,
+		read:   func() (string, error) { return board, nil },
+		write:  func(s string) error { board = s; return nil },
+	}, &board
+}
+
+func TestClearOnlyIfUnchanged(t *testing.T) {
+	c, board := fakeNative()
+	c.Write("secret")()
+	if *board != "secret" {
+		t.Fatalf("board = %q", *board)
+	}
+	fp := Fingerprint("secret")
+
+	*board = "something the user copied later"
+	c.Clear(fp)()
+	if *board != "something the user copied later" {
+		t.Error("cleared text the user copied afterwards")
+	}
+
+	*board = "secret"
+	c.Clear(fp)()
+	if *board != "" {
+		t.Errorf("not cleared: %q", *board)
+	}
+}