Playwright Python Hindi #9 - Assertions (Expect vs Assert) | Master Web Validation for QA Jobs

Learn Playwright Python Assertions in this Hindi tutorial! Master expect vs assert, auto-waiting, page & element validation, URL/title checks, checkbox states & error message verification for QA automation. 🚀 Assertions are the HEART of test automation — they're how your scripts actually verify that something works. In this episode, we break down everything you need to know about validation in Playwright with Python, with hands-on practical examples you can follow along with. If you've ever wondered "how does my test script KNOW if a test passed or failed?" — this video answers exactly that. We cover the most common INTERVIEW questions on assertions too! By the end of this video you will understand: ✅ What assertions are (validation against the UI vs expected result) ✅ The difference between expect (Playwright built-in) and assert (Python built-in) ✅ Why expect is recommended — auto-wait & auto-retry features ✅ How pytest wraps assert to make error messages cleaner & readable ✅ Page-level vs Element-level assertions ✅ Real practical: verifying page URL & title after login ✅ Checkbox validation — to_be_checked, not_to_be_checked, to_be_visible ✅ Text verification with to_have_text and contains ✅ Building a complete positive & negative login test case ✅ Verifying error messages for invalid username/password 📌 KEY TOPICS COVERED: Assertion = validation against something on the UI vs the expected value Checkpoints: condition TRUE = pass, FALSE = fail expect comes from playwright.sync_api (needs import) assert is built into the Python language (no import needed) expect has auto-wait + auto-retry until timeout; assert does not Playwright throws AssertionError on failure Importing expect with sync API Page = full container; Element = single item (link, image, checkbox) expect(page).to_have_url() and to_have_title() Locating elements with SelectorHub / XPath / CSS selectors expect(locator).to_be_visible() and to_be_checked() page.locator() for passing locators into expect contains text vs to_have_text (partial vs full match) Why automation verification matters vs just "seeing it in the browser" Positive login flow: fill username, password, click submit Negative login flow: invalid credentials & error message assertion ⏱️ TIMESTAMPS: 00:00 Introduction & Recap (Locators) 00:35 What is an Assertion? (Validation Explained) 01:37 Two Types of Assertions in Playwright Python 02:06 expect vs assert — Built-in Source Explained 03:01 Importing expect from Playwright Sync API 03:49 expect Features: Auto-Wait & Auto-Retry 04:29 Interview Question: Where does assert come from? 04:47 How Pytest Wraps assert (Cleaner Error Messages) 05:49 expect vs assert Comparison Table 06:36 Playwright Official Assertions Documentation 07:33 Page vs Element — Key Difference 10:41 Practical: Setting Up the Test File 13:21 Asserting Page URL with to_have_url 17:31 Asserting Page Title with to_have_title 20:52 Checkbox Visibility: to_be_visible 26:09 Fixing the Locator with page.locator() 28:43 Checkbox Checked State: to_be_checked 31:46 Verifying Unchecked: not_to_be_checked 34:01 Text Verification: to_have_text vs contains 40:46 Building a Positive Login Test Case 49:17 Asserting URL After Successful Login 51:46 Verifying Page Content Text 54:55 Verifying Logout Element Visibility 57:38 Assignment: Negative Login Test Case 1:00:29 Verifying Invalid Username Error Message 1:06:01 Why Automation Verification Beats Manual Checking 📢 If this helped you understand Playwright assertions, SMASH that LIKE button 👍, SUBSCRIBE for the full Playwright Python Hindi series 🔔, and COMMENT your questions below — I reply to every one! Consistency is the key to cracking QA Automation interviews. Practice every concept yourself, don't just watch. Your dream QA job is closer than you think! 💪 ---------------------------------- 👨‍💻 Perfect for: Beginners | QA Engineers | Automation Testers | Manual Testers moving to Automation #playwrightpython #automationtesting #qatesting #playwrightpython #automationtesting #assertions #playwrighttutorial #qatesting #softwaretesting #pytest #expectvsassert #webautomation #qaengineer #seleniumalternative #pythonautomation #automationtester #playwrighthindi #qatestingjobs #testautomation #learncoding #autowait #webtesting #qacareers