1 files changed, 15 insertions, 0 deletions
diff --git a/devtools/client/shared/components/test/node/__mocks__/string-front.js b/devtools/client/shared/components/test/node/__mocks__/string-front.js
new file mode 100644
index 0000000000..d743f79e8b
--- /dev/null
+++ b/devtools/client/shared/components/test/node/__mocks__/string-front.js
@@ -0,0 +1,15 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+"use strict";
+
+function LongStringFront(grip, overrides) {
+  return {
+    grip,
+    substring: async () => "",
+    ...overrides,
+  };
+}
+
+module.exports = { LongStringFront };