check user_context_id for default and raise exception

Author: navin772

py/selenium/webdriver/common/bidi/browser.py

@@ -176,6 +176,9 @@ def remove_user_context(self, user_context_id: str) -> None:
         ------
             Exception: If the user context ID is "default" or does not exist.
         """
+        if user_context_id == "default":
+            raise Exception("Cannot remove the default user context")
+
         params = {"userContext": user_context_id}
         self.conn.execute(command_builder("browser.removeUserContext", params))
 

py/test/selenium/webdriver/common/bidi/browser_tests.py

@@ -91,6 +91,12 @@ def test_get_client_windows(driver):
     assert window_info.get_y() >= 0
 
 
+@pytest.mark.xfail_safari
+def test_raises_exception_when_removing_default_user_context(driver):
+    with pytest.raises(Exception):
+        driver.browser.remove_user_context("default")
+
+
 @pytest.mark.xfail_safari
 def test_client_window_state_constants(driver):
     assert ClientWindowState.FULLSCREEN == "fullscreen"