Test suite failed to run

Test suite failed to run

I have used MockComponent(FormComponent) inside spec.ts

Im trying to create unit tests for a angular project with Jest. Basically I have the test resolved with native html elements but I had to exchange them for web components and now the same code is not working.

I have a Angular Workspace which has a “shared” project. In the shared project I’ve added a simple testService:

I am trying to test Angular components with jest. One component initializes an inherited (previously undefined) variable in its constructor. When running the application it works as expected. When I run my test and call MockRender(MyComponent), the variable is initialized in the constructor but when the ngOnInit-Block is reached, it is null (only for testing, not when running the application).

I am using Angular with Jest for unit testing, But now stuck with @Input Set method. I have tried in multiple ways but couldn’t able to get the solution.
For Example
@Input set global(val) { this.globalObj = val; }

I use jest v.27 to test an Angular v.12 app (on Node 12). Migrating Angular or Node is not an option.package.json: