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To.have.been.calledWith is not a functional bug in chai # 3.5.0

I have updated the chai version in my project and after updating to 3.5.0

some tests do not work. I see that I cannot validate the arguments of the function I am spy on.

I created a script to reproduce my problem using the sample method here - JSFiddle

describe('Mocha + Chai JsFiddle', function() {

  it('should test arg', function() {
    var spy = sinon.spy(test, 'testFun');

    test.testFun(5);

    expect(spy).to.have.been.called.with(5);
  });
});

Can anyone suggest how we can test the argument in a newer version of chai.js?

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2 answers


When using Sinon, you can use Sinon's spy methods and check the results with Chai:

expect(spy.calledWith(5)).to.equal(true);

Or you can use sinon-chai , which will allow you to do:



expect(spy).to.have.been.calledWith(5);

See JSFiddle for first example

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Perhaps you forgot to include sinon-chai.js? Here is a working fiddle https://jsfiddle.net/zjet0432/1/ I only added sinon-chai.js and changed your last line toexpect(spy).to.have.been.calledWith(5);



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