1 files changed, 7 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webdriver/tests/bidi/storage/get_cookies/invalid.py b/testing/web-platform/tests/webdriver/tests/bidi/storage/get_cookies/invalid.py
index fbd5647f30..93d0da2ac4 100644
--- a/testing/web-platform/tests/webdriver/tests/bidi/storage/get_cookies/invalid.py
+++ b/testing/web-platform/tests/webdriver/tests/bidi/storage/get_cookies/invalid.py
@@ -153,3 +153,10 @@ async def test_params_partition_user_context_invalid_type(bidi_session, value):
         await bidi_session.storage.get_cookies(
             partition=StorageKeyPartitionDescriptor(user_context=value)
         )
+
+
+async def test_params_partition_user_context_invalid_value(bidi_session):
+    with pytest.raises(error.NoSuchUserContextException):
+        await bidi_session.storage.get_cookies(
+            partition=StorageKeyPartitionDescriptor(user_context="foo")
+        )