jasmine 2.0 test with a custom matcher fails: undefined is not a function

jasmine, javascript

Solution

The API for adding custom matchers has changed since 1.3. You can see the changes here.

Here is how it works now:

function gimmeANumber() {
    var x = 4;
    return x;
}

describe('Hello world', function () {

    beforeEach(function () {
        jasmine.addMatchers({
            toBeDivisibleByTwo: function () {
                return {
                    compare: function (actual, expected) {
                        return {
                            pass: (actual % 2) === 0
                        };
                    }
                };
            }
        });
    });

    it('is divisible by 2', function () {
        expect(gimmeANumber()).toBeDivisibleByTwo();
        expect(5).not.toBeDivisibleByTwo();
    });

});

Problem

I have this function in my source file: ``` function gimmeANumber(){ var x = 4; return x; } ``` And a spec borrowed from this tutorial ``` describe('Hello world', function() { beforeEach(function() { this.addMatchers({ toBeDivisibleByTwo: function() { return (this.actual % 2) === 0; } }); }); it('is divisible by 2', function() { expect(gimmeANumber()).toBeDivisibleByTwo(); }); }); ``` This is the error: TypeError: undefined is not a function at Object. (file:///home/n/foo/jasmine/jasmine-2.0.0/dist/spec/HelloWorldSpec.js...) Thank you.

Original source