Testing / Playwright Interview questions

What is the difference between Playwright's expect and Jest's expect?

Playwright Test's expect is a superset built on the same familiar matcher syntax as Jest's, but extended specifically for asynchronous UI state.

Playwright's expect	Jest's expect
Adds web-first matchers: toBeVisible, toHaveText, toHaveScreenshot	General-purpose value matchers: toBe, toEqual, toContain
Web-first matchers auto-retry until timeout	All matchers check once, immediately
Understands Locator objects directly	Has no concept of a Locator

Ordinary value matchers like toBe() or toEqual() work identically in both, so knowledge of Jest transfers directly - the real difference is the added retrying, locator-aware matchers that Jest's expect was never designed to handle, since Jest has no browser automation concept at all.

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Playwright's expect adds which capability beyond Jest's expect? Retrying, locator-aware web assertions

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Basic toBe() value comparisons

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JSON parsing

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Plain matchers like toEqual() in Playwright Test: Behave completely differently from Jest

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Work the same as in Jest, checking once

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Are not available at all

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How do you take a screenshot in Playwright? How do you handle iframes in Playwright? How do you use the page.goto() method? What is a fixture in Playwright? What are assertions in Playwright? What is the difference between page.click() and locator().click()? What are the supported programming languages in Playwright? What are locators in Playwright? Describe the Playwright Inspector? List the different types of locators in Playwright? What is the Trace Viewer in Playwright? How do you use codegen in Playwright? What is the difference between Playwright and Selenium? How does Playwright handle multiple tabs and windows? What is Playwright? What are the supported browsers in Playwright? How do you install Playwright? What is the purpose of the Playwright Test Runner? Define auto-waiting in Playwright? What is the difference between expect().toBeVisible() and isVisible()?

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