1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/IndexedDB/idbobjectstore-index-finished.html b/testing/web-platform/tests/IndexedDB/idbobjectstore-index-finished.html
new file mode 100644
index 0000000000..a45c66ed70
--- /dev/null
+++ b/testing/web-platform/tests/IndexedDB/idbobjectstore-index-finished.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>IndexedDB: IDBObjectStore index() when transaction is finished</title>
+<link rel="help" href="https://w3c.github.io/IndexedDB/#dom-idbobjectstore-index">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/support.js"></script>
+<script>
+
+indexeddb_test(
+  (t, db) => {
+    const store = db.createObjectStore('store');
+    store.createIndex('index', 'key_path');
+  },
+  (t, db) => {
+    const tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
+    const store = tx.objectStore('store');
+    tx.abort();
+    assert_throws_dom('InvalidStateError', () => store.index('index'),
+                      'index() should throw if transaction is finished');
+    t.done();
+  },
+  'IDBObjectStore index() behavior when transaction is finished'
+);
+
+</script>