Exploring the functionality of Typescript classes in a namespace through Jest testing

Within a certain namespace, I have created a method like so:

// main.ts
namespace testControl {

    export const isInternalLink = (link: string) => {
        return true;
    }
}

I also have a jest spec as shown below:

// main.spec.ts

test('should return false when provided with an external link', () => {

 // How can I utilize testControl.isInternalLink within this test?

});

I attempted to add the following:

/// <reference path="./main.ts"/> 

I also tried enclosing the test within the same namespace

Answer №1

If you're looking to streamline your code, consider exporting the namespace itself:

// main.ts
export namespace customFunctions {

    export const isInternalLink = (link: string) => {
        return true;
    }
}

To utilize this namespace, simply import it in your spec file:

// main.spec.ts
import { customFunctions } from './main'

test('Verify external link behavior should return false', () => {

  // How to integrate customFunctions.isInternalLink here?
  expect(customFunctions.isExternalLink('')).toBe(false)
});

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