TypeError: Cannot read property ‘setTransform’ of null when using Openlayers and Jest + Enzyme [closed]

The issue here is that jsdom browser doesn’t support canvas API so in order to fix this you can install this dev dependency jest-canvas-mock to add canvas api to jsdom window. Here is a few steps:

Install:

yarn add -D jest-canvas-mock

// or npm

npm i -D jest-canvas-mock

Add this package as your setupFiles of jest:

{
  setupFiles: ['jest-canvas-mock']
}

That’s it!