Files
edx-platform/common/djangoapps/terrain/ui_helpers.py
2013-06-03 09:46:19 -04:00

161 lines
4.1 KiB
Python

#pylint: disable=C0111
#pylint: disable=W0621
from lettuce import world
import time
from urllib import quote_plus
from selenium.common.exceptions import WebDriverException, StaleElementReferenceException
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from lettuce.django import django_url
@world.absorb
def wait(seconds):
time.sleep(float(seconds))
@world.absorb
def wait_for(func):
WebDriverWait(world.browser.driver, 5).until(func)
@world.absorb
def visit(url):
world.browser.visit(django_url(url))
@world.absorb
def url_equals(url):
return world.browser.url == django_url(url)
@world.absorb
def is_css_present(css_selector, wait_time=5):
return world.browser.is_element_present_by_css(css_selector, wait_time=wait_time)
@world.absorb
def is_css_not_present(css_selector, wait_time=5):
return world.browser.is_element_not_present_by_css(css_selector, wait_time=wait_time)
@world.absorb
def css_has_text(css_selector, text):
return world.css_text(css_selector) == text
@world.absorb
def css_find(css, wait_time=5):
def is_visible(driver):
return EC.visibility_of_element_located((By.CSS_SELECTOR, css,))
world.browser.is_element_present_by_css(css, wait_time=wait_time)
wait_for(is_visible)
return world.browser.find_by_css(css)
@world.absorb
def css_click(css_selector):
"""
Perform a click on a CSS selector, retrying if it initially fails
"""
assert is_css_present(css_selector)
try:
world.browser.find_by_css(css_selector).click()
except WebDriverException:
# Occassionally, MathJax or other JavaScript can cover up
# an element temporarily.
# If this happens, wait a second, then try again
world.wait(1)
world.browser.find_by_css(css_selector).click()
@world.absorb
def css_click_at(css, x=10, y=10):
'''
A method to click at x,y coordinates of the element
rather than in the center of the element
'''
e = css_find(css).first
e.action_chains.move_to_element_with_offset(e._element, x, y)
e.action_chains.click()
e.action_chains.perform()
@world.absorb
def id_click(elem_id):
"""
Perform a click on an element as specified by its id
"""
world.css_click('#%s' % elem_id)
@world.absorb
def css_fill(css_selector, text):
assert is_css_present(css_selector)
world.browser.find_by_css(css_selector).first.fill(text)
@world.absorb
def click_link(partial_text):
world.browser.find_link_by_partial_text(partial_text).first.click()
@world.absorb
def css_text(css_selector):
# Wait for the css selector to appear
if world.is_css_present(css_selector):
try:
return world.browser.find_by_css(css_selector).first.text
except StaleElementReferenceException:
# The DOM was still redrawing. Wait a second and try again.
world.wait(1)
return world.browser.find_by_css(css_selector).first.text
else:
return ""
@world.absorb
def css_visible(css_selector):
assert is_css_present(css_selector)
return world.browser.find_by_css(css_selector).visible
@world.absorb
def dialogs_closed():
def are_dialogs_closed(driver):
'''
Return True when no modal dialogs are visible
'''
return not css_visible('.modal')
wait_for(are_dialogs_closed)
return not css_visible('.modal')
@world.absorb
def save_the_html(path='/tmp'):
u = world.browser.url
html = world.browser.html.encode('ascii', 'ignore')
filename = '%s.html' % quote_plus(u)
f = open('%s/%s' % (path, filename), 'w')
f.write(html)
f.close()
@world.absorb
def click_course_settings():
course_settings_css = 'li.nav-course-settings'
if world.browser.is_element_present_by_css(course_settings_css):
world.css_click(course_settings_css)
@world.absorb
def click_tools():
tools_css = 'li.nav-course-tools'
if world.browser.is_element_present_by_css(tools_css):
world.css_click(tools_css)