Bug 2003992 - [wdspec] Add a test case with "locale" equal "undefined" for "emulation.setLocaleOverride". r=whimboo

lutien · lutien · commit 303c960d005e · 2025-12-04T13:49:26.000Z
Differential Revision: https://phabricator.services.mozilla.com/D275042
diff --git a/testing/web-platform/tests/webdriver/tests/bidi/emulation/set_locale_override/invalid.py b/testing/web-platform/tests/webdriver/tests/bidi/emulation/set_locale_override/invalid.py
@@ -1,6 +1,7 @@
 import pytest
 
 import webdriver.bidi.error as error
+from webdriver.bidi.undefined import UNDEFINED
 
 pytestmark = pytest.mark.asyncio
 
@@ -91,6 +92,14 @@ async def test_params_user_contexts_entry_invalid_value(bidi_session, value):
         )
 
 
+async def test_params_locale_missing(bidi_session, top_context):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.emulation.set_locale_override(
+            locale=UNDEFINED,
+            contexts=[top_context["context"]],
+        )
+
+
 @pytest.mark.parametrize("value", [False, 42, {}, []])
 async def test_params_locale_invalid_type(bidi_session, top_context, value):
     with pytest.raises(error.InvalidArgumentException):
