Playwright is an open-source automation testing framework developed by Microsoft that enables reliable end-to-end testing for modern web applications. It provides a developer-friendly API and supports multiple programming languages, including JavaScript, TypeScript, Python, and C#. Playwright aims to address the challenges faced by testers and developers when automating tests for complex web applications. Playwright training is important for mastering end-to-end testing of web applications.

Course Objectives:

In this course, you will learn to:

• Self-waiting APIs. Interactions by playwrights automatically wait for ready elements. This makes reliability better and makes test authoring easier.
• Timeout-free automation. Playwright receives browser signals such as network requests, page navigations, and page load events to avoid the need for sleep timeouts that lead to sluggishness.
• Efficient parallelism using browser contexts. Use browser contexts to reuse a single instance of a browser across various parallel, isolated execution environments.
• Selectors for resilient elements. The Playwright can choose elements using user-facing strings like text content and accessibility labels. These strings are more resilient than selectors closely coupled to the DOM structure.
• A playwright is an out-of-process automation driver that can automate scenarios containing multiple pages and is not constrained by the scope of in-page JavaScript execution.
• Strong network control. To stub and mock network requests, the Playwright introduces context-wide network interception.

Course content

Environment Setup

• Install Python
• Install PyCharm IDE
• Create Project in PyCharm
• Setup and Configuration. (Robot framework, Browser library)

Python program

• Working with code comments
• Strings, Integers and Floats
• Simple Math operations
• Variables
• Variables naming conventions
• Working with Variables
• F-strings
• User Input
• Data type conversion
• Booleans and Comparisons
• Conditional Statements
• Elif statements
• Boolean logic
• Lists
• Tuples
• Dictionaries
• For loops
• While loops
• Functions
• Functions with arguments
• Return from function
• Function annotations
• Intro to classes
• Class examples
• Modules
• Packages
• Standard Python Library

Playwright Basics

• Why Playwright?
• Introduction to Playwright section
• Install git
• Create a new repo and clone to PyCharm
• Install Playwright and beta-browsers
• Record and play a first test with Playwright
• Test structure(AAA or Given/When/Then)
• Tests are too fast? – Use slow_mo!
• Editing default timeout

Playwright Selectors

• Playwright inspector in Browser Dev Tools
• Playwright selectors guide
• Text selectors
• CSS selectors
• :nth-match and :has-text
• Layout selectors
• XPath selectors
• Chaining selectors >>
• Playwright selectors summary

Waits

• Wait for selector and page loads
• Build a custom wait

Page Object Model and Project structure

• Page Object Model
• Project structure
• POM helper methods

Pytest Framework 

• Intro and install pytest
• Pytest naming conventions
• Run first pytest test with Playwright
• Run pytest from PyCharm gutter
• Run several tests
• Markers – skip
• Markers – xfail
• Custom markers
• Useful pytest CLI commands
• Pytest CLI commands documentation

Reporting and Parallel Execution via CLI 

• Install and run report
• Parallel run with pytest
• Combine pytest, reporting and parallel commands

Pytest Playwright fixtures and CLI commands

• Intro to fixtures
• py file
• Create a set_up fixture
• Page fixture
• Headed, browsers, slowmo and device emulation CLI commands
• Capturing screenshots and video recordings
• base-url CLI command
• Optimize set_up fixtures
• Fixture scopes
• Page fixture vs. browser fixture
• Add tear_down step

Data Driven Testing

• Marker – parametrize
• Data for negative testing
• Stack parametrize for easier maintenance and better test data coverage

CI/CD integration

• Set up GitHub Actions
• Edit yml file and run tests in CI/CD pipeline
• YML file reference link
• Use login password via GitHub Secrets
• Toggle password between local and remote runs
• Store passwords in .env file

Authentication scenarios

• Reuse authenticated state with browser context
• Reuse authenticated state with storage file
• Importance of page.wait_for_load_state
• Testing a chat application with multiple users
• Browser Authentication

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