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authentik/tests/e2e/utils.py

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"""authentik e2e testing utilities"""
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import json
from functools import lru_cache, wraps
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from os import environ, makedirs
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from time import sleep, time
from typing import Any, Callable, Optional
from django.apps import apps
from django.contrib.staticfiles.testing import StaticLiveServerTestCase
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from django.db import connection
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from django.db.migrations.loader import MigrationLoader
from django.db.migrations.operations.special import RunPython
from django.test.testcases import TransactionTestCase
from django.urls import reverse
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from docker import DockerClient, from_env
from docker.models.containers import Container
from selenium import webdriver
from selenium.common.exceptions import (
NoSuchElementException,
TimeoutException,
WebDriverException,
)
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from selenium.webdriver.common.by import By
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
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from selenium.webdriver.common.keys import Keys
from selenium.webdriver.remote.webdriver import WebDriver
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from selenium.webdriver.remote.webelement import WebElement
from selenium.webdriver.support.ui import WebDriverWait
from structlog.stdlib import get_logger
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from authentik.core.api.users import UserSerializer
from authentik.core.models import User
from authentik.managed.manager import ObjectManager
# pylint: disable=invalid-name
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def USER() -> User: # noqa
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"""Cached function that always returns akadmin"""
return User.objects.get(username="akadmin")
class SeleniumTestCase(StaticLiveServerTestCase):
"""StaticLiveServerTestCase which automatically creates a Webdriver instance"""
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container: Optional[Container] = None
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wait_timeout: int
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def setUp(self):
super().setUp()
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self.wait_timeout = 60
makedirs("selenium_screenshots/", exist_ok=True)
self.driver = self._get_driver()
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self.driver.maximize_window()
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self.driver.implicitly_wait(30)
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self.wait = WebDriverWait(self.driver, self.wait_timeout)
self.logger = get_logger()
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if specs := self.get_container_specs():
self.container = self._start_container(specs)
def _start_container(self, specs: dict[str, Any]) -> Container:
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client: DockerClient = from_env()
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client.images.pull(specs["image"])
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container = client.containers.run(**specs)
if "healthcheck" not in specs:
return container
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while True:
container.reload()
status = container.attrs.get("State", {}).get("Health", {}).get("Status")
if status == "healthy":
return container
self.logger.info("Container failed healthcheck")
sleep(1)
def get_container_specs(self) -> Optional[dict[str, Any]]:
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"""Optionally get container specs which will launched on setup, wait for the container to
be healthy, and deleted again on tearDown"""
return None
def _get_driver(self) -> WebDriver:
return webdriver.Remote(
command_executor="http://localhost:4444/wd/hub",
desired_capabilities=DesiredCapabilities.CHROME,
)
def tearDown(self):
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if "TF_BUILD" in environ:
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screenshot_file = (
f"selenium_screenshots/{self.__class__.__name__}_{time()}.png"
)
self.driver.save_screenshot(screenshot_file)
self.logger.warning("Saved screenshot", file=screenshot_file)
for line in self.driver.get_log("browser"):
self.logger.warning(
line["message"], source=line["source"], level=line["level"]
)
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if self.container:
self.container.kill()
self.driver.quit()
super().tearDown()
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def wait_for_url(self, desired_url):
"""Wait until URL is `desired_url`."""
self.wait.until(
lambda driver: driver.current_url == desired_url,
f"URL {self.driver.current_url} doesn't match expected URL {desired_url}",
)
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def url(self, view, **kwargs) -> str:
"""reverse `view` with `**kwargs` into full URL using live_server_url"""
return self.live_server_url + reverse(view, kwargs=kwargs)
def if_admin_url(self, view) -> str:
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"""same as self.url() but show URL in shell"""
return f"{self.live_server_url}/if/admin/#{view}"
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def get_shadow_root(
self, selector: str, container: Optional[WebElement] = None
) -> WebElement:
"""Get shadow root element's inner shadowRoot"""
if not container:
container = self.driver
shadow_root = container.find_element(By.CSS_SELECTOR, selector)
element = self.driver.execute_script(
"return arguments[0].shadowRoot", shadow_root
)
return element
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def login(self):
"""Do entire login flow and check user afterwards"""
flow_executor = self.get_shadow_root("ak-flow-executor")
identification_stage = self.get_shadow_root(
"ak-stage-identification", flow_executor
)
identification_stage.find_element(
By.CSS_SELECTOR, "input[name=uid_field]"
).click()
identification_stage.find_element(
By.CSS_SELECTOR, "input[name=uid_field]"
).send_keys(USER().username)
identification_stage.find_element(
By.CSS_SELECTOR, "input[name=uid_field]"
).send_keys(Keys.ENTER)
flow_executor = self.get_shadow_root("ak-flow-executor")
password_stage = self.get_shadow_root("ak-stage-password", flow_executor)
password_stage.find_element(By.CSS_SELECTOR, "input[name=password]").send_keys(
USER().username
)
password_stage.find_element(By.CSS_SELECTOR, "input[name=password]").send_keys(
Keys.ENTER
)
sleep(1)
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def assert_user(self, expected_user: User):
"""Check users/me API and assert it matches expected_user"""
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self.driver.get(self.url("authentik_api:user-me") + "?format=json")
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user_json = self.driver.find_element(By.CSS_SELECTOR, "pre").text
user = UserSerializer(data=json.loads(user_json)["user"])
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user.is_valid()
self.assertEqual(user["username"].value, expected_user.username)
self.assertEqual(user["name"].value, expected_user.name)
self.assertEqual(user["email"].value, expected_user.email)
@lru_cache
def get_loader():
"""Thin wrapper to lazily get a Migration Loader, only when it's needed
and only once"""
return MigrationLoader(connection)
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def apply_migration(app_name: str, migration_name: str):
"""Re-apply migrations that create objects using RunPython before test cases"""
def wrapper_outter(func: Callable):
"""Retry test multiple times"""
@wraps(func)
def wrapper(self: TransactionTestCase, *args, **kwargs):
migration = get_loader().get_migration(app_name, migration_name)
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with connection.schema_editor() as schema_editor:
for operation in migration.operations:
if not isinstance(operation, RunPython):
continue
operation.code(apps, schema_editor)
return func(self, *args, **kwargs)
return wrapper
return wrapper_outter
def object_manager(func: Callable):
"""Run objectmanager before a test function"""
@wraps(func)
def wrapper(*args, **kwargs):
"""Run objectmanager before a test function"""
ObjectManager().run()
return func(*args, **kwargs)
return wrapper
def retry(max_retires=3, exceptions=None):
"""Retry test multiple times. Default to catching Selenium Timeout Exception"""
if not exceptions:
exceptions = [WebDriverException, TimeoutException, NoSuchElementException]
logger = get_logger()
def retry_actual(func: Callable):
"""Retry test multiple times"""
count = 1
@wraps(func)
def wrapper(self: TransactionTestCase, *args, **kwargs):
"""Run test again if we're below max_retries, including tearDown and
setUp. Otherwise raise the error"""
nonlocal count
try:
return func(self, *args, **kwargs)
# pylint: disable=catching-non-exception
except tuple(exceptions) as exc:
count += 1
if count > max_retires:
logger.debug("Exceeded retry count", exc=exc, test=self)
# pylint: disable=raising-non-exception
raise exc
logger.debug("Retrying on error", exc=exc, test=self)
self.tearDown()
self._post_teardown() # noqa
self.setUp()
return wrapper(self, *args, **kwargs)
return wrapper
return retry_actual