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Merge pull request #2023 from edx/feature/will/ci-lettuce-tests
Feature/will/ci lettuce tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,50 +1,102 @@ | ||
| """ | ||
| Browser set up for acceptance tests. | ||
| """ | ||
|
|
||
| #pylint: disable=E1101 | ||
| #pylint: disable=W0613 | ||
| #pylint: disable=W0611 | ||
|
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||
| from lettuce import before, after, world | ||
| from splinter.browser import Browser | ||
| from logging import getLogger | ||
| from django.core.management import call_command | ||
| from django.conf import settings | ||
| from selenium.common.exceptions import WebDriverException | ||
|
|
||
| # Let the LMS and CMS do their one-time setup | ||
| # For example, setting up mongo caches | ||
| from lms import one_time_startup | ||
| from cms import one_time_startup | ||
|
|
||
| logger = getLogger(__name__) | ||
| logger.info("Loading the lettuce acceptance testing terrain file...") | ||
| # There is an import issue when using django-staticfiles with lettuce | ||
| # Lettuce assumes that we are using django.contrib.staticfiles, | ||
| # but the rest of the app assumes we are using django-staticfiles | ||
| # (in particular, django-pipeline and our mako implementation) | ||
| # To resolve this, we check whether staticfiles is installed, | ||
| # then redirect imports for django.contrib.staticfiles | ||
| # to use staticfiles. | ||
| try: | ||
| import staticfiles | ||
| except ImportError: | ||
| pass | ||
| else: | ||
| import sys | ||
| sys.modules['django.contrib.staticfiles'] = staticfiles | ||
|
|
||
| LOGGER = getLogger(__name__) | ||
| LOGGER.info("Loading the lettuce acceptance testing terrain file...") | ||
|
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| MAX_VALID_BROWSER_ATTEMPTS = 20 | ||
|
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|
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| @before.harvest | ||
| def initial_setup(server): | ||
| ''' | ||
| Launch the browser once before executing the tests | ||
| ''' | ||
| """ | ||
| Launch the browser once before executing the tests. | ||
| """ | ||
| browser_driver = getattr(settings, 'LETTUCE_BROWSER', 'chrome') | ||
| world.browser = Browser(browser_driver) | ||
|
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||
| # There is an issue with ChromeDriver2 r195627 on Ubuntu | ||
| # in which we sometimes get an invalid browser session. | ||
| # This is a work-around to ensure that we get a valid session. | ||
| success = False | ||
| num_attempts = 0 | ||
| while (not success) and num_attempts < MAX_VALID_BROWSER_ATTEMPTS: | ||
|
|
||
| # Get a browser session | ||
| world.browser = Browser(browser_driver) | ||
|
|
||
| # Try to visit the main page | ||
| # If the browser session is invalid, this will | ||
| # raise a WebDriverException | ||
| try: | ||
| world.visit('/') | ||
|
|
||
| except WebDriverException: | ||
| world.browser.quit() | ||
| num_attempts += 1 | ||
|
|
||
| else: | ||
| success = True | ||
|
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||
| # If we were unable to get a valid session within the limit of attempts, | ||
| # then we cannot run the tests. | ||
| if not success: | ||
| raise IOError("Could not acquire valid ChromeDriver browser session.") | ||
|
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||
|
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| @before.each_scenario | ||
| def reset_data(scenario): | ||
| ''' | ||
| """ | ||
| Clean out the django test database defined in the | ||
| envs/acceptance.py file: mitx_all/db/test_mitx.db | ||
| ''' | ||
| logger.debug("Flushing the test database...") | ||
| """ | ||
| LOGGER.debug("Flushing the test database...") | ||
| call_command('flush', interactive=False) | ||
|
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||
|
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| @after.each_scenario | ||
| def screenshot_on_error(scenario): | ||
| ''' | ||
| Save a screenshot to help with debugging | ||
| ''' | ||
| """ | ||
| Save a screenshot to help with debugging. | ||
| """ | ||
| if scenario.failed: | ||
| world.browser.driver.save_screenshot('/tmp/last_failed_scenario.png') | ||
|
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||
|
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| @after.all | ||
| def teardown_browser(total): | ||
| ''' | ||
| Quit the browser after executing the tests | ||
| ''' | ||
| """ | ||
| Quit the browser after executing the tests. | ||
| """ | ||
| world.browser.quit() | ||
| pass |
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