Visual Testing in Playwright | Visually Compare Screenshot | Playwright Tutorial

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Visual testing with Playwright, How to do visual regression testing using Playwright, Visual Testing in Playwright Complete tutorial, Playwright: Visual testing

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playwright, playwright tutorial, playwright testing

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Chapters

00:00 - Introduction
00:48 - Perform basic visual comparison
05:55 - Provide name to the visual comparison screenshot
09:15 - Save refrence screenshot in desired child folder
14:30 - Full Screen option for Visual Testing
17:32 - maxDiffPixels option for Visual Testing
25:52 - maxDiffPixelRatio option for Visual Testing
32:23 - mask option for Visual Testing
39:39 - Perform visual testing for specifc element
43:55 - Visual Testing on different Browser / Mobile device emulator
46:41 - Update refrence screenshot
50:27 - StylePath option for Visual Testing
56:16 - Non Image snapshot verification
01:00:33 - Exampel of visual testing of different pages
01:04:31 - Recap

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Playwright with TypeScript | Visual Testing in Playwright | Visually Compare Screenshot

Playwright Test includes the ability to produce and visually compare screenshots using
await expect(page).toHaveScreenshot().
On first execution, Playwright test will generate reference screenshots. Subsequent runs will compare against the reference.
Playwright Test uses the pixelmatch library which is pixel-level image comparison library.

Options -

fullPage
maxDiffPixels
maxDiffPixelRatio
mask
stylePath

Apart from screenshots, you can use expect(value).toMatchSnapshot(snapshotName) to compare text or arbitrary binary data.
To Update the reference screenshots use command - npx playwright test --update-snapshots

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Subscribe Button Animation: pixabay - YRDesigns
Thumbnail and Other art Creation App: Canva

[TestingOnly-qy]

you really didn't disappoint. Thanks for all your hardwork on making these tutorials for us. One question though, is it possible to put condition under {mask} property? To check if certain locator - link or button is clickable or not?

[asifnaseer]

Getting error
await
Error: toHaveScreenshot can be only used with Page or Locator objects

[alishaakhouri]

Hi, I need help on comparing 2 .png images in project directory using playwright with typescript -
My case is -

1.i have uploaded one .webp image Image1 from my project directory (it supports only .webp image)
2.converted this .webp into png using sharp
3.i have download that file from browser as image2 and stored into my project directory (note- cannot take screenshot because logo is embedded over this image)

4.both image 1& image2 are in my project directory

Question is- how to compare these two images to make sure that both are same to make my test pass?

[TheDeathkush]

Is there any way to test the text the website with the design file like pdf or figma

[aromalM-nu]

When using fullpage option as true in tohavescreenshot, i am not seeing the baseline image being saved in tests. I observed that its taking 2 screenhots in same execution and doing the comalparison. Is this the expected ?

When not passing fullpage option baseline image is getting saved and comparison is happening in the next run successfully.

[chandanav]

Can you make api testing using playwright complete tutorial please sir

[abhishekbhardwaj]

Bro make a video on wait for response method .Like my scenario is : I click a button, in background it triggers an API and gets the response. I want to wait for response code to be 200. Once I verify that response is 200, then only I want to proceed to next step. Thanks in advance. Make the video in little detail please with making us understand why we don't use await keyword while using wait for response and all.