258 行
8.7 KiB
Python
258 行
8.7 KiB
Python
# Licensed to the Software Freedom Conservancy (SFC) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The SFC licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""Exceptions that may happen in all the webdriver code."""
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from typing import Optional
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from typing import Sequence
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class WebDriverException(Exception):
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"""Base webdriver exception."""
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def __init__(
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self, msg: Optional[str] = None, screen: Optional[str] = None, stacktrace: Optional[Sequence[str]] = None
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) -> None:
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super().__init__()
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self.msg = msg
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self.screen = screen
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self.stacktrace = stacktrace
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def __str__(self) -> str:
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exception_msg = f"Message: {self.msg}\n"
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if self.screen:
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exception_msg += "Screenshot: available via screen\n"
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if self.stacktrace:
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stacktrace = "\n".join(self.stacktrace)
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exception_msg += f"Stacktrace:\n{stacktrace}"
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return exception_msg
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class InvalidSwitchToTargetException(WebDriverException):
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"""Thrown when frame or window target to be switched doesn't exist."""
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class NoSuchFrameException(InvalidSwitchToTargetException):
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"""Thrown when frame target to be switched doesn't exist."""
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class NoSuchWindowException(InvalidSwitchToTargetException):
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"""Thrown when window target to be switched doesn't exist.
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To find the current set of active window handles, you can get a list
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of the active window handles in the following way::
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print driver.window_handles
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"""
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class NoSuchElementException(WebDriverException):
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"""Thrown when element could not be found.
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If you encounter this exception, you may want to check the following:
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* Check your selector used in your find_by...
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* Element may not yet be on the screen at the time of the find operation,
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(webpage is still loading) see selenium.webdriver.support.wait.WebDriverWait()
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for how to write a wait wrapper to wait for an element to appear.
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"""
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class NoSuchAttributeException(WebDriverException):
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"""Thrown when the attribute of element could not be found.
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You may want to check if the attribute exists in the particular
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browser you are testing against. Some browsers may have different
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property names for the same property. (IE8's .innerText vs. Firefox
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.textContent)
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"""
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class NoSuchShadowRootException(WebDriverException):
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"""Thrown when trying to access the shadow root of an element when it does
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not have a shadow root attached."""
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class StaleElementReferenceException(WebDriverException):
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"""Thrown when a reference to an element is now "stale".
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Stale means the element no longer appears on the DOM of the page.
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Possible causes of StaleElementReferenceException include, but not limited to:
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* You are no longer on the same page, or the page may have refreshed since the element
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was located.
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* The element may have been removed and re-added to the screen, since it was located.
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Such as an element being relocated.
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This can happen typically with a javascript framework when values are updated and the
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node is rebuilt.
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* Element may have been inside an iframe or another context which was refreshed.
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"""
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class InvalidElementStateException(WebDriverException):
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"""Thrown when a command could not be completed because the element is in
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an invalid state.
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This can be caused by attempting to clear an element that isn't both
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editable and resettable.
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"""
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class UnexpectedAlertPresentException(WebDriverException):
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"""Thrown when an unexpected alert has appeared.
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Usually raised when an unexpected modal is blocking the webdriver
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from executing commands.
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"""
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def __init__(
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self,
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msg: Optional[str] = None,
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screen: Optional[str] = None,
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stacktrace: Optional[Sequence[str]] = None,
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alert_text: Optional[str] = None,
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) -> None:
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super().__init__(msg, screen, stacktrace)
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self.alert_text = alert_text
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def __str__(self) -> str:
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return f"Alert Text: {self.alert_text}\n{super().__str__()}"
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class NoAlertPresentException(WebDriverException):
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"""Thrown when switching to no presented alert.
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This can be caused by calling an operation on the Alert() class when
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an alert is not yet on the screen.
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"""
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class ElementNotVisibleException(InvalidElementStateException):
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"""Thrown when an element is present on the DOM, but it is not visible, and
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so is not able to be interacted with.
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Most commonly encountered when trying to click or read text of an
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element that is hidden from view.
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"""
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class ElementNotInteractableException(InvalidElementStateException):
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"""Thrown when an element is present in the DOM but interactions with that
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element will hit another element due to paint order."""
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class ElementNotSelectableException(InvalidElementStateException):
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"""Thrown when trying to select an unselectable element.
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For example, selecting a 'script' element.
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"""
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class InvalidCookieDomainException(WebDriverException):
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"""Thrown when attempting to add a cookie under a different domain than the
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current URL."""
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class UnableToSetCookieException(WebDriverException):
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"""Thrown when a driver fails to set a cookie."""
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class TimeoutException(WebDriverException):
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"""Thrown when a command does not complete in enough time."""
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class MoveTargetOutOfBoundsException(WebDriverException):
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"""Thrown when the target provided to the `ActionsChains` move() method is
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invalid, i.e. out of document."""
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class UnexpectedTagNameException(WebDriverException):
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"""Thrown when a support class did not get an expected web element."""
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class InvalidSelectorException(WebDriverException):
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"""Thrown when the selector which is used to find an element does not
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return a WebElement.
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Currently this only happens when the selector is an xpath expression
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and it is either syntactically invalid (i.e. it is not a xpath
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expression) or the expression does not select WebElements (e.g.
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"count(//input)").
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"""
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class ImeNotAvailableException(WebDriverException):
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"""Thrown when IME support is not available.
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This exception is thrown for every IME-related method call if IME
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support is not available on the machine.
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"""
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class ImeActivationFailedException(WebDriverException):
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"""Thrown when activating an IME engine has failed."""
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class InvalidArgumentException(WebDriverException):
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"""The arguments passed to a command are either invalid or malformed."""
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class JavascriptException(WebDriverException):
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"""An error occurred while executing JavaScript supplied by the user."""
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class NoSuchCookieException(WebDriverException):
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"""No cookie matching the given path name was found amongst the associated
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cookies of the current browsing context's active document."""
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class ScreenshotException(WebDriverException):
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"""A screen capture was made impossible."""
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class ElementClickInterceptedException(WebDriverException):
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"""The Element Click command could not be completed because the element
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receiving the events is obscuring the element that was requested to be
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clicked."""
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class InsecureCertificateException(WebDriverException):
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"""Navigation caused the user agent to hit a certificate warning, which is
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usually the result of an expired or invalid TLS certificate."""
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class InvalidCoordinatesException(WebDriverException):
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"""The coordinates provided to an interaction's operation are invalid."""
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class InvalidSessionIdException(WebDriverException):
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"""Occurs if the given session id is not in the list of active sessions,
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meaning the session either does not exist or that it's not active."""
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class SessionNotCreatedException(WebDriverException):
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"""A new session could not be created."""
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class UnknownMethodException(WebDriverException):
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"""The requested command matched a known URL but did not match any methods
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for that URL."""
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class SeleniumManagerException(WebDriverException):
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"""Raised when an issue interacting with selenium manager occurs."""
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