CODEWITHSUNDEEP
javascriptpostmanchai
Lithicas
Lithicas

Reputation: 4013

Postman BDD testing array of object REST API

I'm writing tests using Postman BDD / Chai and have ran in to an issue testing a response that is an array.

So my API returns something along the lines of

[
        {
            "id": 1,
            "firstName": "x",
            "lastName": "y",
            "dateOfBirth": "2018-04-21",
            "username": "user"
        },
        {
            "id": 2,
            "firstName": "x",
            "lastName": "y",
            "dateOfBirth": "2018-04-21",
            "username": "admin"
        } 
]

How do I check that the response contains certain members?

expect(response).to.have.property('id');

Does not seem to function since the response is an array. Changing response to response[0] doesn't seem to change anything either.

Suggestions?

Upvotes: 2

Views: 842

Answers (1)

Danny Dainton
Danny Dainton

Reputation: 25881

You could just add something like this into the Tests tab without the need to use the Postman BDD library. I've used Lodash here but you could do the same thing with native JS using a for loop:

pm.test('Response has the ID property', () => {
    _.each(pm.response.json(), (arrItem) => {
        console.log(arrItem)
        pm.expect(arrItem).to.have.property('id')
    })
})

enter image description here

You could extend this to check the whole object for specfic elements - Add another line in the test like pm.expect(arrItem).to.have.property('firstName') for example.

If you are using the PostmanBDD library you can add a for loop to check for the id property:

eval(globals.postmanBDD)

describe('Get id data', () => {
  it('should check the id property is present', () => {
      for(i=0; i < response.body.length; i++) {
          console.log(response.body[i])
          response.body[i].should.have.property('id')
      }
  })
})

Postman

Upvotes: 2

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