Andrey Lushnikov aslushnikov

Setting up new Ubuntu 20.04 buildbot on Azure

Recording of my steps to setup Ubuntu 20.04 buildbot VM on July 22, 2020. The bot is responsible for WebKit builds.

Update apt-get & install clang-9 to be consistent with Ubuntu 18.04 bot.

~$ sudo apt-get update
~$ sudo apt-get install clang-9

Setting up new Ubuntu 18.04 buildbot on Azure

Recording of my steps to setup Ubuntu 18.04 buildbot VM on July 22, 2020. The bot is responsible for WebKit and Firefox builds.

Install clang-9. Default clang-6 is too old to compile Firefox - we need a new one.

~$ sudo apt-get install clang-9
~$ sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-9 100

Before

pwuser@396166c88ec2:/root/playwright$ node a.js
(node:9916) UnhandledPromiseRejectionWarning: browserType.launch: Protocol error (Target.setAutoAttach): Target closed.
=========================== logs ===========================
[browser] <launching> /home/pwuser/.cache/ms-playwright/chromium-786218/chrome-linux/chrome --disable-background-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-breakpad --disab
le-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=TranslateUI,BlinkGenPropertyTrees,ImprovedCookieControls,SameSiteByDefaultCookies --disable-hang-monitor --disab

What is this for

This script lists the package names for the missing libraries in a given debian distribution.

Usage

Using the script (e.g. with ubuntu 18.04)

Put script in the current directory and name it deps.js
Run docker with distro in question and mount current folder with the script into it

Looking into TestRunners 🧐

Market Share
General Testrunner Ergonomics
e2e testing perspective
Debugging
TypeScript Support
Parallelization

As we were preparing Playwright 1.1.0, I learned quite a lot about Web Proxies. Below is the summary of my findings.

TIL: WEB Proxies

Reverse Web Proxy vs Forwarding Web Proxy

There are two groups of proxies that drive internet:


	> [email protected] ftest /Users/aslushnikov/prog/playwright
	> cross-env BROWSER=firefox jest "page-wait-for-navigation.spec.js"

	console.error
	Using executable at /Users/aslushnikov/firefox/obj-build-playwright/dist/Nightly.app/Contents/MacOS/firefox

	73 \| executablePath = process.env.WKPATH;
	74 \| if (executablePath)
	> 75 \| console.error(`Using executable at ${executablePath}`);

	FROM ubuntu:18.04 as firefox-builder

	RUN apt-get update && apt-get install -y wget \
	git-core \
	python \
	python3 \
	python3-distutils \
	curl \
	clang-9

	FROM ubuntu:bionic

	RUN apt-get update && apt-get install -y curl && \
	curl -sL https://deb.nodesource.com/setup_12.x \| bash - && \
	apt-get install -y nodejs

	RUN apt-get update && apt-get install -y libwoff1 \
	libopus0 \
	libwebp6 \
	libwebpdemux2 \

	#!/usr/bin/env node

	const fs = require('fs');
	const util = require('util');
	const path = require('path');
	const {spawn} = require('child_process');

	const accessAsync = util.promisify(fs.access.bind(fs));
	const checkExecutable = (filePath) => accessAsync(filePath, fs.constants.X_OK).then(() => true).catch(e => false);
	const statAsync = util.promisify(fs.stat.bind(fs));