1 files changed, 3 insertions, 0 deletions
diff --git a/testing/web-platform/tests/navigation-api/navigation-history-entry/resources/is_uuid.js b/testing/web-platform/tests/navigation-api/navigation-history-entry/resources/is_uuid.js
new file mode 100644
index 0000000000..3b855c01b0
--- /dev/null
+++ b/testing/web-platform/tests/navigation-api/navigation-history-entry/resources/is_uuid.js
@@ -0,0 +1,3 @@
+function isUUID(key) {
+  return /[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[89aAbB][a-f0-9]{3}-[a-f0-9]{12}/.test(key);
+}