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from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import multiprocessing
import argparse
class ElementDisplay(object):
'''Custom expected condition '''
def __init__(self, locator):
self.locator = locator
def __call__(self, driver):
try:
element = EC._find_element(driver, self.locator)
return element.value_of_css_property("display") == "none"
except Exception:
return False
class SeleniumTestError(Exception):
pass
class SeleniumTest():
def __init__(self, url, quiz_name, module_name, course_name):
self.driver = webdriver.Firefox()
self.quiz_name = quiz_name
self.module_name = module_name
self.course_name = course_name
self.url = url
def run_load_test(self, url, username, password):
try:
self.driver.delete_all_cookies()
self.driver.get(self.url)
self.login(username, password)
self.open_quiz()
self.quit_quiz()
self.close_quiz()
self.logout()
self.driver.close()
except Exception as e:
self.driver.close()
msg = ("An Error occurred while running the Selenium load"
" test on Yaksh!\n"
"Error:\n{0}".format(e))
raise SeleniumTestError(msg)
def login(self, username, password):
# get the username, password and submit form elements
username_elem = self.driver.find_element_by_id("id_username")
password_elem = self.driver.find_element_by_id("id_password")
submit_login_elem = self.driver.find_element_by_css_selector(
'button.btn')
# Type in the username, password and submit form
username_elem.send_keys(username)
password_elem.send_keys(password)
submit_login_elem.click()
def submit_answer(self, question_label, answer, loop_count=1):
self.driver.implicitly_wait(2)
for count in range(loop_count):
self.driver.find_element_by_link_text(question_label).click()
submit_answer_elem = self.driver.find_element_by_id("check")
self.driver.execute_script(
'global_editor.editor.setValue({});'.format(answer))
submit_answer_elem.click()
WebDriverWait(self.driver, 90).until(ElementDisplay(
(By.XPATH, "//*[@id='ontop']")))
def test_c_question(self, question_label):
# Incorrect Answer
loop_count = 10
answer = '\"int add(int a, int b, int c)\\n{return;}\"'
self.submit_answer(question_label, answer, loop_count)
# Infinite Loop
loop_count = 3
answer = '\"int add(int a, int b, int c)\\n{while(1){}}\"'
self.submit_answer(question_label, answer, loop_count)
# Correct Answer
loop_count = 1
answer = '\"int add(int a, int b, int c)\\n{return a + b + c;}\"'
self.submit_answer(question_label, answer, loop_count)
def test_python_question(self, question_label):
# Incorrect Answer
loop_count = 10
answer = '\"def is_palindrome(s):\\n return s\"'
self.submit_answer(question_label, answer, loop_count)
# Infinite Loop
loop_count = 3
answer = '\"while True:\\n pass"'
self.submit_answer(question_label, answer, loop_count)
# Correct Answer
loop_count = 1
answer = '\"def is_palindrome(s):\\n return s[::-1] == s\"'
self.submit_answer(question_label, answer, loop_count)
def test_bash_question(self, question_label):
# Incorrect Answer
loop_count = 10
answer = '\"#!/bin/bash\\nls\"'
self.submit_answer(question_label, answer, loop_count)
# Infinite Loop
loop_count = 3
answer = '\"#!/bin/bash\\nwhile [ 1 ]; do : ; done\"'
self.submit_answer(question_label, answer, loop_count)
# Correct Answer
loop_count = 1
answer = '\"#!/bin/bash\\ncat $1 | cut -d: -f2 | paste -d: $3 - $2\"'
self.submit_answer(question_label, answer, loop_count)
def open_quiz(self):
# open module link
self.driver.find_elements_by_partial_link_text(
self.course_name)[0].click()
self.driver.find_element_by_link_text(self.module_name).click()
# open quiz link
self.driver.find_element_by_link_text(self.quiz_name).click()
# Get page elements
start_exam_elem = WebDriverWait(self.driver, 5).until(
EC.presence_of_element_located((By.NAME, "start"))
)
start_exam_elem.click()
self.test_c_question(question_label=7)
self.test_python_question(question_label=5)
self.test_bash_question(question_label=4)
def quit_quiz(self):
quit_link_elem = WebDriverWait(self.driver, 5).until(
EC.presence_of_element_located((By.NAME, "quit"))
)
quit_link_elem.click()
quit_link_elem = WebDriverWait(self.driver, 5).until(
EC.presence_of_element_located((By.NAME, "yes"))
)
quit_link_elem.click()
def close_quiz(self):
quit_link_elem = WebDriverWait(self.driver, 5).until(
EC.presence_of_element_located((By.ID, "home"))
)
quit_link_elem.click()
def logout(self):
logout_link_elem = WebDriverWait(self.driver, 5).until(
EC.presence_of_element_located((By.ID, "logout"))
)
logout_link_elem.click()
def user_gen(url, ids):
return [(url, 'User%d' % x, 'User%d' % x) for x in ids]
def wrap_run_load_test(args):
url = "http://yaksh.fossee.aero.iitb.ac.in/exam/"
selenium_test = SeleniumTest(url=url, quiz_name=quiz_name)
return selenium_test.run_load_test(*args)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument(
'url', type=str, help="url of the website being tested"
)
parser.add_argument('start', type=int, help="Starting user id")
parser.add_argument(
"-n", "--number", type=int, default=10, help="number of users"
)
opts = parser.parse_args()
quiz_name = "Demo quiz"
module_name = "Demo Module"
course_name = "Yaksh Demo course"
selenium_test = SeleniumTest(url=opts.url, quiz_name=quiz_name,
module_name=module_name,
course_name=course_name)
pool = multiprocessing.Pool(opts.number)
pool.map(
wrap_run_load_test,
user_gen(opts.url, range(opts.start, opts.start + opts.number))
)
pool.close()
pool.join()
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