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diff --git a/testing/web-platform/tests/IndexedDB/idbtransaction-objectStore-finished.html b/testing/web-platform/tests/IndexedDB/idbtransaction-objectStore-finished.html
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index 0000000000..afe5bec0f8
--- /dev/null
+++ b/testing/web-platform/tests/IndexedDB/idbtransaction-objectStore-finished.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>IndexedDB: IDBTransaction objectStore() when transaction is finished</title>
+<link rel="help" href="https://w3c.github.io/IndexedDB/#dom-idbtransaction-objectstore">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/support.js"></script>
+<script>
+
+indexeddb_test(
+  (t, db) => {
+    db.createObjectStore('store');
+  },
+  (t, db) => {
+    const tx = db.transaction('store', 'readonly', {durability: 'relaxed'});
+    tx.abort();
+    assert_throws_dom('InvalidStateError', () => tx.objectStore('store'),
+                      'objectStore() should throw if transaction is finished');
+    t.done();
+  },
+  'IDBTransaction objectStore() behavior when transaction is finished'
+);
+
+</script>