On Mac, I am having problem getting jest installed and working in an angular/cli (v6) app. Regardless of the methods I used to place jest (listed below), I am getting error:
Test suite failed to run
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
/Users/owner/Code/testjest/src/setup-jest.ts:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import 'jest-preset-angular';
^^^^^^
SyntaxError: Unexpected token import
at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:403:17)
The methods I tried included:
ng g @briebug/jest-schematic:add(https://github.com/briebug/jest-schematic)- https://brianflove.com/2018/05/26/angular-jest-testing/
- https://www.lambda-it.ch/blog/post/using-jest-with-angular
- https://blog.angularindepth.com/integrate-jest-into-an-angular-application-and-library-163b01d977ce
OTOH, when I cloned https://github.com/blove/ngrx-testing/tree/master, the repo runs jest just fine - which, I think, excludes problem with my jest package installed globally
The following SO answers did not help: