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.