UI Testing

Selenium

Selenium automates browsers!!!

Features

navigate (windows, frames, links)
find elements and parse attributes
interact and trigger events (click, type, ...)
capture screenshots
run javascript
let the browser take care of the hard stuff(cookies, javascript, sessions, profiles, DOM)

Parts of Selenium

Selenium Webdriver
Selenium IDE
Selenium Server
Selenium-Grid

Commands

find

find_element_by_id
find_element_by_name
find_element_by_xpath
find_element_by_link_text
find_element_by_partial_link_text
find_element_by_tag_name
find_element_by_class_name
find_element_by_css_selector

def login_field(self):
    return self.wait.until(EC.element_to_be_clickable((By.NAME, 'Login')))

def password_field(self):
    return self.wait.until(EC.element_to_be_clickable((By.NAME, 'Password')))

def login_button(self):
    return self.wait.until(EC.element_to_be_clickable((By.XPATH, "//button[@type='submit']")))

def error_message(self):
    return self.wait.until(EC.element_to_be_clickable((By.XPATH, "//div[@class='error-text']")))

def login_username(self):
    return self.wait.until(EC.element_to_be_clickable((By.CLASS_NAME, "username")))

def logout_button(self):
    return self.wait.until(EC.element_to_be_clickable((By.CLASS_NAME, "logout")))

interact

def login(self, name, password):
    self.login_field().send_keys(name)
    self.password_field().send_keys(password)
    self.login_button().click()

Actions

actions = ActionChains(driver)
test_plan = wait.until(EC.presence_of_element_located((By.XPATH, ".//ul/li[1]"))) actions.move_to_element(test_plan)
actions.click(test_plan)
actions.perform()

Asserts

assertEqual(a, b)
assertNotEqual(a, b)
assertTrue(x)
assertFalse(x)

General Recipe

Install requirements $ pip install selenium pyvirtualdisplay
Start up Firefox and Selenium IDE or You can create a test code in your editor.
Record a 'test' run through site.
Export test as python script
Hack from there
- Loops
- Image/data extraction
- Wrangling data into a database

Running Selenium Server

$ java -jar selenium-server-standalone-2.x.x.jar

Selenium Script Example

http://selenium-python.readthedocs.org/en/latest/getting-started.html

import unittest
from selenium import webdriver
from selenium.webdriver.common.keys import Keys

class PythonOrgSearch(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Firefox()

    def test_search_in_python_org(self):
        driver = self.driver
        driver.get("http://www.python.org")
        self.assertIn("Python", driver.title)
        elem = driver.find_element_by_name("q")
        elem.send_keys("pycon")
        elem.send_keys(Keys.RETURN)
        assert "No results found." not in driver.page_source


    def tearDown(self):
        self.driver.close()

if __name__ == "__main__":
    unittest.main()