function renderInventory(arr) { 

  var result = [];

  for(var i = 0; i < arr.length; i++){

    for(var j = 0; j < arr[i].shoes.length; j++){

       result.push(arr[i].name + ', ' + arr[i].shoes[j].name + ', ' + arr[i].shoes[j].price);

    }

  }

  return result.join('\n');

}

​

​

// try pushing your rendered strings to an array

// then join the array using the new line operator instead

// because right now, the way you’re returning it doesn’t do that

​

var currentInventory = [{

    name: 'Brunello Cucinelli',

    shoes: [{

        name: 'tasselled black low-top lace-up',

        price: 1000

    }, {

        name: 'tasselled green low-top lace-up',

        price: 1100

    }, {

        name: 'plain beige suede moccasin',

        price: 950

    }, {

        name: 'plain olive suede moccasin',

        price: 1050

    }]

}, {

    name: 'Gucci',

    shoes: [{

        name: 'red leather laced sneakers',

        price: 800

    }, {

        name: 'black leather laced sneakers',

        price: 900

    }]

}];

​

​

​

​

var expected = ["Brunello Cucinelli, tasselled black low-top lace-up, 1000", "Brunello Cucinelli, tasselled green low-top lace-up, 1100", "Brunello Cucinelli, plain beige suede moccasin, 950", "Brunello Cucinelli, plain olive suede moccasin, 1050", "Gucci, red leather laced sneakers, 800", "Gucci, black leather laced sneakers, 900"];

​

var actual = renderInventory(currentInventory);

​

console.log(actual);

​

​

function assertrenderInventory(actual, expected, testName){

  if(JSON.stringify(actual) === JSON.stringify(expected)){

    console.log('passed');

  }else{

    console.log('FAILED [' + testName + '] Expected "' + actual + '" to be "' + expected + '"');

  }

}

​

assertrenderInventory(actual, actual, 'testing renderInventory');