Clever Geek Handbook

Assert that the JSONs array contains one property

I have a device storage project that allows you to add / remove / edit devices and I am trying to check in postman that after a POST that adds a device to the list, the device can be found in my response body. I am using Postman BDD and Chai sintax

[
{
    "deviceid": "5a72fec0-a220-4484-a058-e1e56dfc56c5",
    "name": "Huawei",
    "alias": "electronics",
    "quantity": 10,
    "price": 200,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "90807800-c66c-46ec-ae46-687464e62797",
    "name": "Pixel 2",
    "alias": "electronics",
    "quantity": 10,
    "price": 300,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "c2bd507d-e544-4ce8-b272-34cab732adb4",
    "name": "SONYk",
    "alias": "electronicsm",
    "quantity": 122,
    "price": 2222,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "caa97d05-2672-48c5-8c56-e0da1298b20d",
    "name": "ASUS1",
    "alias": "electronics",
    "quantity": 1222,
    "price": 2222,
    "categoryid": "11535983-b9d0-4a0f-8d53-ca204446e0b8",
    "links": []
}

]

This is my answer as you can see that it is returning a JSON array and I am looking for an elegant way to assert that the device with the "Pixel 2" property is in the array. I am open to any other javascript libraries that can help me achieve this goal.

+3


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5 answers


You can use a method find

that takes a callback function .

var array=[
{
    "deviceid": "5a72fec0-a220-4484-a058-e1e56dfc56c5",
    "name": "Huawei",
    "alias": "electronics",
    "quantity": 10,
    "price": 200,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "90807800-c66c-46ec-ae46-687464e62797",
    "name": "Pixel 2",
    "alias": "electronics",
    "quantity": 10,
    "price": 300,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "c2bd507d-e544-4ce8-b272-34cab732adb4",
    "name": "SONYk",
    "alias": "electronicsm",
    "quantity": 122,
    "price": 2222,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "caa97d05-2672-48c5-8c56-e0da1298b20d",
    "name": "ASUS1",
    "alias": "electronics",
    "quantity": 1222,
    "price": 2222,
    "categoryid": "11535983-b9d0-4a0f-8d53-ca204446e0b8",
    "links": []
}];
var item=array.find(function(item){
  return item.name=="Pixel 2";
});
console.log(item);
console.log("Exists: "+item!=undefined);
Run code




Another method is to use a function includes

.

var array=[
{
    "deviceid": "5a72fec0-a220-4484-a058-e1e56dfc56c5",
    "name": "Huawei",
    "alias": "electronics",
    "quantity": 10,
    "price": 200,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "90807800-c66c-46ec-ae46-687464e62797",
    "name": "Pixel 2",
    "alias": "electronics",
    "quantity": 10,
    "price": 300,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "c2bd507d-e544-4ce8-b272-34cab732adb4",
    "name": "SONYk",
    "alias": "electronicsm",
    "quantity": 122,
    "price": 2222,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "caa97d05-2672-48c5-8c56-e0da1298b20d",
    "name": "ASUS1",
    "alias": "electronics",
    "quantity": 1222,
    "price": 2222,
    "categoryid": "11535983-b9d0-4a0f-8d53-ca204446e0b8",
    "links": []
}];
var exists=array.map(function(item){
  return item.name;
}).includes("Pixel 2");
console.log(exists);
Run code


+2


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You can use Array#some

:

response.some( o => o.name == "Pixel 2" )


The result is a boolean value.

+1


source


No library required. You can use Array.prototype.some

:

if (response.some(i => i.name == 'Pixel 2')) {
  // ...
}
+1


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Use Array#filter

with Array#length

to see if your item exists

const array = [{
        "deviceid": "5a72fec0-a220-4484-a058-e1e56dfc56c5",
        "name": "Huawei",
        "alias": "electronics",
        "quantity": 10,
        "price": 200,
        "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
        "links": []
    },
    {
        "deviceid": "90807800-c66c-46ec-ae46-687464e62797",
        "name": "Pixel 2",
        "alias": "electronics",
        "quantity": 10,
        "price": 300,
        "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
        "links": []
    },
    {
        "deviceid": "c2bd507d-e544-4ce8-b272-34cab732adb4",
        "name": "SONYk",
        "alias": "electronicsm",
        "quantity": 122,
        "price": 2222,
        "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
        "links": []
    },
    {
        "deviceid": "caa97d05-2672-48c5-8c56-e0da1298b20d",
        "name": "ASUS1",
        "alias": "electronics",
        "quantity": 1222,
        "price": 2222,
        "categoryid": "11535983-b9d0-4a0f-8d53-ca204446e0b8",
        "links": []
    }
];

const hasPixel2 = array.filter(item => item.name === 'Pixel 2').length > 0;
console.log(hasPixel2);
Run code


0


source


Or Array#Filter 

var array=[
{
    "deviceid": "5a72fec0-a220-4484-a058-e1e56dfc56c5",
    "name": "Huawei",
    "alias": "electronics",
    "quantity": 10,
    "price": 200,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "90807800-c66c-46ec-ae46-687464e62797",
    "name": "Pixel 2",
    "alias": "electronics",
    "quantity": 10,
    "price": 300,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "c2bd507d-e544-4ce8-b272-34cab732adb4",
    "name": "SONYk",
    "alias": "electronicsm",
    "quantity": 122,
    "price": 2222,
    "categoryid": "91a71dc0-4d40-4d20-a59d-bb30a348a7f2",
    "links": []
},
{
    "deviceid": "caa97d05-2672-48c5-8c56-e0da1298b20d",
    "name": "ASUS1",
    "alias": "electronics",
    "quantity": 1222,
    "price": 2222,
    "categoryid": "11535983-b9d0-4a0f-8d53-ca204446e0b8",
    "links": []
}];
var item = array.filter(item => item.name === "Pixel 2");
console.log(item);
Run code


0


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