Use the bind method for Jasmine toThrow Tests

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Thanks to Danyal Aytekin for his Stackoverflow answer. If you want to use the toThrow in Jasmin tests on actual functions, you can use the “Function.bind, which was introduced in JavaScript 1.8.5. This works in the latest versions of Chrome and Firefox, and you can patch other browsers by defining the function yourself.”

From his answer:

describe('using bind with jasmine', function() {
    var f = function(x) {
        if(x === 2) {
            throw new Error();
        }
    }

    it('lets us avoid using an anonymous function', function() {
        expect(f.bind(null, 2)).toThrow();
    });
});

Thanks Danyal!

EDIT: An alternative to this is to use the try catch:

describe('with try catch', function() {
    var f = function(x) {
        if(x === 2) {
            throw new Error();
        }
    }

    it('lets us avoid using an anonymous function', function() {
       try {
           f(2);
           // fail if we get here, the exception wasn't thrown
           expect(false).toBeTruthy();
       }
       catch(){
           expect(true).toBeTruthy();
    });
});