"Playwright can do this? An intro into e2e testing and Playwright",...

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@stefanjudis
Playwright
can do this?

Does anyone remember
this friend?

Or this one?

@stefanjudis
stefanjudis.com | webweekly.email
Heyo,
I'm Stefan!
checklyhq.com

webweekly.email

The idea of end-to-end
testing was great!

But it was terrible.

Tests were slow, hard
to write and
fl
aky.

We run the tests
on demand.
My colleagues & I

We gave up. :/
My colleagues & I

Things got a lot better

Playwright is cross-everything

Run your tests in VS Code

More than a browser control
/
/
@ts
-
check
const { test, expect } = require("@playwright/test");
test.describe("navigatio...

Easy to parallelize
npx playwright test
-
-
workers 4
/
/
playwright.conf
i
g.js
const conf
i
g = {
workers: process.env.C...

Built for quick execution
const button = page.locator('button')
await page.locator(click)
expect(button).toBeHidden()
Auto...

A very fast release cycle

Let's have a look!
#crowdCoding

Auto-wait Web-
fi
rst assertions Screenshots
Test runner Retries Tracing
VS Code extension Inspector Debugger
Codegen Imag...

Short and idempotent scripts
Best practices
Account createAccount login
Account update
Account delete
User account
fl
ow

Short and idempotent scripts
Best practices
Account create
Account login
Account update
Account delete

Short and idempotent scripts
Best practices
Account create
Account login
Account update
Account delete

Short and idempotent scripts
Best practices
Account create
Account login
Account update
Account delete

blog.checklyhq.com/how-low-level-api-calls-stabilize-your-end-to-end-tests/

Treat your UIs
like your APIs.

APIs are measured with the
number of nines — 99.999%.

Your entire application
should be tested all the time!

Account create
Account login
Account update
Account delete
99.999%
99.1%
99.8%
99.94%
Stellar frontends with con
fi
dence

The tech doesn't matter

End-to-end monitoring
should be your safety net.*
* Your future-self will thank you!

@stefanjudis
www.stefanjudis.com
webweekly.email
Thanks!

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