[py] Add DetachedShadowRoot Exception

Author: shbenzer

py/selenium/common/__init__.py

@@ -48,6 +48,7 @@
 from .exceptions import UnexpectedTagNameException
 from .exceptions import UnknownMethodException
 from .exceptions import WebDriverException
+from .exceptions import DetachedShadowRootException
 
 __all__ = [
     "WebDriverException",
@@ -83,4 +84,5 @@
     "InvalidSessionIdException",
     "SessionNotCreatedException",
     "UnknownMethodException",
+    "DetachedShadowRootException"
 ]

py/selenium/common/exceptions.py

@@ -285,3 +285,6 @@ def __init__(
         with_support = f"{msg}; {SUPPORT_MSG} {ERROR_URL}/driver_location"
 
         super().__init__(with_support, screen, stacktrace)
+
+class DetachedShadowRootException(WebDriverException):
+    """Raised when referenced shadow root is no longer attached to the DOM"""

py/selenium/webdriver/remote/errorhandler.py

@@ -23,6 +23,7 @@
 from selenium.common.exceptions import ElementNotInteractableException
 from selenium.common.exceptions import ElementNotSelectableException
 from selenium.common.exceptions import ElementNotVisibleException
+from selenium.common.exceptions import DetachedShadowRootException
 from selenium.common.exceptions import ImeActivationFailedException
 from selenium.common.exceptions import ImeNotAvailableException
 from selenium.common.exceptions import InsecureCertificateException
@@ -88,6 +89,7 @@ class ExceptionMapping:
     UNABLE_TO_CAPTURE_SCREEN = ScreenshotException
     ELEMENT_CLICK_INTERCEPTED = ElementClickInterceptedException
     UNKNOWN_METHOD = UnknownMethodException
+    DETACHED_SHADOW_ROOT = DetachedShadowRootException
 
 
 class ErrorCode:
@@ -131,6 +133,7 @@ class ErrorCode:
     UNABLE_TO_CAPTURE_SCREEN = [63, "unable to capture screen"]
     ELEMENT_CLICK_INTERCEPTED = [64, "element click intercepted"]
     UNKNOWN_METHOD = ["unknown method exception"]
+    DETACHED_SHADOW_ROOT = [65,"detached shadow root"]
 
     METHOD_NOT_ALLOWED = [405, "unsupported operation"]
 

py/test/unit/selenium/webdriver/remote/error_handler_tests.py

@@ -240,7 +240,11 @@ def test_raises_exception_for_unknown_method(handler, code):
 def test_raises_exception_for_method_not_allowed(handler, code):
     with pytest.raises(exceptions.WebDriverException):
         handler.check_response({"status": code, "value": "foo"})
-
+        
+@pytest.mark.parametrize("code", ErrorCode.DETACHED_SHADOW_ROOT)
+def test_raises_exception_for_invalid_selector(handler, code):
+    with pytest.raises(exceptions.DetachedShadowRootException):
+        handler.check_response({"status": code, "value": "foo"})
 
 @pytest.mark.parametrize("key", ["stackTrace", "stacktrace"])
 def test_relays_exception_stacktrace(handler, key):