Jest createSpyObj

Question

With Chai, you can create a spy object as follows:

chai.spy.object([ \'push\', \'pop\' ]);

With jasmine, you can use:

jasmi         


        

Answer 1

I've written a very quick createSpyObj function for jest, to support the old project. Basically ported from Jasmine's implementation.

export const createSpyObj = (baseName, methodNames): { [key: string]: Mock } => {
    let obj: any = {};

    for (let i = 0; i < methodNames.length; i++) {
        obj[methodNames[i]] = jest.fn();
    }

    return obj;
};