Library › Book 13 › Browser Contexts, Pages, and Isolation
Browser Contexts, Pages, and Isolation
4.1🔒Learning ObjectivesBy the end of this chapter, you will be able to:
4.2🔒The Isolation HierarchyPlaywright's object model has three levels, each providing different kinds of isolation:
4.3🔒Creating and Configuring ContextsWhile the test runner creates contexts automatically, you can create them manually for advanced scenarios:
4.4🔒Storage State: Reusing AuthenticationLogging in through the UI is slow. If every test starts by navigating to the login page, filling in credentials, and clicking submit, you…
4.5🔒Multiple Pages and TabsContexts can hold multiple pages, simulating a user with several tabs open:
4.6🔒Context EventsContexts emit events that you can listen to for cross-page monitoring:
4.7🔒Exercises1. Write a test that sets a cookie in one context 2. Create a second context in the same test 3. Verify that the second context does not…
4.8🔒Q&AQuiz1. What is the relationship between browsers, contexts, and pages in Playwright? a) They are all the same thing b) Browser contains…
4.9🔒Key Takeaways- Browser contexts provide lightweight test isolation without the cost of separate browser processes. - Each test gets a fresh context by…
4.10🔒Career Translation- "Designed test isolation architecture using Playwright browser contexts, reducing test infrastructure costs by 60% compared to Selenium…
4.11🔒Q&AInterview Depth CheckPrompt: "How would you handle test isolation in a suite of 500 browser tests that need to run in parallel?"