Chai - Testing for values in array of objects

Question

I am setting up my tests for the results to a REST endpoint that returns me an array of Mongo database objects.

[{_id: 5, title: \'Blah\', owner: \'Ted\', de         


        

Answer 1

An alternative solution could be extending the array object with a function to test if an object exists inside the array with the desired property matching the expected value, like this

/**
 * @return {boolean}
 */
Array.prototype.HasObjectWithPropertyValue = function (key, value) {
    for (var i = 0; i < this.length; i++) {
        if (this[i][key] === value) return true;
    }
    return false;
};

(i put this in my main test.js file, so that all other nested tests can use the function)

Then you can use it in your tests like this

var result = query_result;
// in my case (using superagent request) here goes
// var result = res.body;

result.HasObjectWithPropertyValue('property', someValue).should.equal(true);