Intro to Selenium UI Tests with pytest & some useful pytest plugins

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Intro to Selenium UI Tests with pytest
With some useful pytest plugins
Asif Mohaimen
QA Specialist
August 27, 2020

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About Me !
Asif Mohaimen
QA Specialist
Eskimi DSP
https://asifmohai.men
asif@eskimi.com

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Summary "
• What’s pytest? #
• What’s Selenium? $
• How to make them work together? %
• Some demonstration! < >
• Some useful pytest plugins! ⚒

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“pytest”? # '
• Python framework for tests.
def inc(x):
return x + 1
def test_true():
assert inc(3) == 4
def test_false():
assert not (not inc(3) == 4)

Result? (
$pytest blah.py
============================= test session starts ==============================
platform darwin -- Python 3.7.6, pytest-5.3.5, py-1.8.1, pluggy-0.13.1
rootdir: /location, inifile: pytest.ini
collected 2 items
test.py .. [100%]
============================== 2 passed in 0.32s ===============================
def inc(x):
return x + 1
def test_true():
assert inc(3) == 4
def test_false():
assert not (not inc(3) == 4)
blah.py

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“Selenium”? $ '
Selenium automates browsers.
That's it!

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Code Demo )

Web elements? *
<div class="login-form">
<form action=“#" method="post">
<h2 class="text-center">Log in</h2>
<div class="form-group">
<input type="text" id="username" class="form-control" placeholder="Username" required="required">
</div>
<input type="password" id="password" class="form-control" placeholder="Password" required="required">
</div>
<button type="submit" class="btn btn-primary btn-block">Log in</button>
</div>
</form>
</div>

Accessing web elements +
• 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
• find_element
• find_elements
from selenium.webdriver.common.by import By
driver.find_element(By.XPATH, '//button[text()="Some text"]') # Private
driver.find_elements(By.XPATH, '//button') # Private
driver.find_element_by_xpath('//button[text()="Some text"]') # Public
driver.find_element_by_xpath('//button') # Public

Performing actions ☝
•click(on_element=None)
•click_and_hold(on_element=None)
•context_click(on_element=None)
•double_click(on_element=None)
•drag_and_drop(source, target)
•drag_and_drop_by_offset(source, xoffset, yoffset)
•key_down(value, element=None)
•key_up(value, element=None)
•move_by_offset(xoffset, yoffset)
•move_to_element(to_element)
•move_to_element_with_offset(to_element, xoffset, yoffset)
•pause(seconds)
•perform()
•release(on_element=None)
•reset_actions()
•send_keys(*keys_to_send)
•send_keys_to_element(element, *keys_to_send)

Demo Login Task -
Open Source Demo App
https://opensource-demo.orangehrmlive.com/index.php/auth/login

Simple Script "
from selenium import webdriver
driver = webdriver.Chrome()
driver.get('https://opensource-demo.orangehrmlive.com/index.php/auth/login')
driver.find_element_by_id('txtUsername').send_keys('Admin')
driver.find_element_by_id('txtPassword').send_keys('admin123')
driver.find_element_by_id('btnLogin').click()
if driver.current_url.endswith('dashboard'):
print('PASS')
else:
print('FAIL')
driver.quit()

Structure the project? .
.
├── pages
│ ├── __init__.py
│ └── login.py
├── requirements.txt
└── tests
├── conftest.py
└── test_login.py
2 directories, 5 files
& use it with pytest!

requirements.txt /
pytest==x.x.x
selenium==x.x.x
.
├── pages
│ ├── __init__.py
└── tests
$pip install -r requirements.txt

⚙ conftest.py #
import pytest
from selenium import webdriver
@pytest.fixture
def driver():
driver = webdriver.Chrome()
driver.implicitly_wait(10)
yield driver
driver.quit()
.
├── pages
│ ├── __init__.py
└── tests

+ login.py #
from selenium.webdriver.common.by import By
class Login:
LOGIN_PAGE = 'https://opensource-demo.orangehrmlive.com/index.php/auth/login'
USERNAME_INPUT = (By.ID, 'txtUsername')
PASSWORD_INPUT = (By.ID, 'txtPassword')
LOGIN_BUTTON = (By.ID, 'btnLogin')
username = 'Admin'
password = 'admin123'
def __init__(self, driver):
self.driver = driver
def login(self):
self.driver.get(self.LOGIN_PAGE)
username_input = self.driver.find_element(*self.USERNAME_INPUT)
password_input = self.driver.find_element(*self.PASSWORD_INPUT)
login_button = self.driver.find_element(*self.LOGIN_BUTTON)
username_input.send_keys(self.username) # Give username input
password_input.send_keys(self.password) # Give password input
login_button.click() # Click the login button
return self.driver.current_url
.
├── pages
│ ├── __init__.py
└── tests

1 test_login.py #
from pages.login import Login
def test_login(driver):
login_page = Login(driver)
assert login_page.login().endswith('dashboard')
.
├── pages
│ ├── __init__.py
└── tests

⚒ Run the test with pytest #
$ python -m pytest
============================= test session starts ==============================
platform darwin -- Python x.x.x, pytest-x.x.x, py-x.x.x, pluggy-x.x.x
rootdir: project_location
collected 1 item
tests/test_login.py . [100%]
============================== 1 passed in 16.60s ==============================

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Why use pytest? #
• Flexibility
• Fixtures
• Test discovery
• Logging
• Better reporting

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• pytest-blockage
• pytest-benchmark
• pytest-browsermob-proxy
• pytest-capturelog
• pytest-cloud
• pytest-config
• pytest-rerunfailures
• pytest-xdist
Plugins? 2

pytest-xdist the cool one!
$pip install pytest-xdist
$python -m pytest -n 100 3

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Agreed?

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Thanks!

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C O N T A C T
Floor 5th, Flat-E2
House 12/A, Road-8
Gulshan-1, Dhaka-1212
business.eskimi.comasif@eskimi.com

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