Add a missing import
diff --git a/test/highlight_test.dart b/test/highlight_test.dart
index 4eceaa8..19f8ca8 100644
--- a/test/highlight_test.dart
+++ b/test/highlight_test.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:term_glyph/term_glyph.dart' as glyph;
 import 'package:test/test.dart';
 
 import 'package:source_span/source_span.dart';