SinonJS spy call seems not working correctly

Question

I'm trying to spy a method call from a class instance, like this:

export class MyClass {
  async method(project, service) {
    console.log('calling my method');
  }
}

and then on my test, I'm doing like this:

const classInstance = new MyClass();
const spy = sandbox.spy(classInstance, 'method');
classInstance.method();
sinon.assert.calledOnce(spy);

The weird thing is, the "console.log" is printed out, but the sinon assertion is saying that the method is not called :\

Am I doing something wrong? Thanks!

Answer 1

It should work. I am using "sinon": "^8.1.1". E.g.

index.ts:

export class MyClass {
  async method(project, service) {
    console.log('calling my method');
  }
}

index.test.ts:

import { MyClass } from './';
import sinon from 'sinon';

describe('60605728', () => {
  it('should spy', () => {
    const sandbox = sinon.createSandbox();
    const classInstance = new MyClass();
    const spy = sandbox.spy(classInstance, 'method');
    classInstance.method('project', 'service');
    sinon.assert.calledOnce(spy);
  });
});

unit test results:

  60605728
calling my method
    ✓ should spy


  1 passing (10ms)