Selenium-TestGrid

A test grid that mimics Browserstack and LambdaTest and helps you record videos of your selenium tests

Developed 2 methods which achives our objective (80% - 90%). Built a system providing some basic functionalities of LambdaTest.

Primary Objectives

The system must host a selenium grid that we can connect to execute our tests on each build.
A video must be recorded and saved for reference.
Slack Notification in case of test fail.

Secondary Objectives

We should be able to execute our tests in parallel, so that build takes lesser time.

Major Challenge

Video recording is the main challenge (discovered 2 working methods for this).

Approach

We develop a microservice that has the responsibility of recording videos from the tests being executed.
Here is a flow diagram how our infrastructure will look like.

The Screen Recorder can work in two ways.

Method 1

Host a MJPEG server alongside Selenium server on windows system.
Use FFMPEG to capture screenshots from here and render it as video

Issues-

System method only works when RDP connection is alive with the windows server/GUI is available.

Method 2

Connect The Recorder service with same selenium session and keep taking screenshots.
Use FFMPEG to render a video from these images later.

Issues-

To cope up with the quality of video, the video speed with be approx 2.5X (we can slow it down while watching : ) )

Overall System Requirement-

System requirement mostly depends on parallelism.
Still we require atleast core system and atleast 2 GB RAM.