Karate: Code 418 is returned instead of 200 if not using "And header Accept = 'application/json'"

Created on 5 May 2018 · 5Comments · Source: intuit/karate

Hi :)
I am new to API testing and I was testing out Karate to practice API testing but there was a weird thing that happened and I don't know if it is an issue or a misunderstanding from my side.

I am trying testing against "https://restful-booker.herokuapp.com/" APIs .. It is An API playground created by Mark Winteringham for those wanting to learn more about API testing and tools

I added my feature as follows:

  Scenario: POST /booking should return 200 status code
    Given url 'https://restful-booker.herokuapp.com/booking'
    And request read('post_booking_data.json')
    When method POST
    Then status 200

It didn't work and returned "418" although when I try the exact thing with postman, the 200 status code is returned successfully.
But then after reading another part in Karate documentation, I updated my feature to be as follows:

  Scenario: POST /booking should return 200 status code
    Given url 'https://restful-booker.herokuapp.com/booking'
    And request read('post_booking_data.json')
    And header Accept = 'application/json'
    When method POST
    Then status 200

This just went well and the test ran successfully only after I added "And header Accept = 'application/json'"

Is there anything that I was doing wrong or I didn't understand it correctly?

Thanks a lot!!

question

Source

AyaAkl25

👍1

All 5 comments

@Aya-Akl I think Karate is working as designed. There are 2 things that are happening. First: while Karate will send the Content-Type header automatically depending on the type of the payload, Postman seems to go one step further and set the Accept header as well.

Second: the API here is (at least in my opinion) badly designed. Ideally, the API should assume the intended Accept to be same as the Content-Type if not specified by the user. Here is an example of another API (not created by Mark Winteringham ;) that works as you would expect:

Scenario: POST /booking should return 201 status code
Given url 'https://jsonplaceholder.typicode.com/users'
And request
"""
{
  "name": "Test User",
  "username": "testuser",
  "email": "[email protected]",
  "address": {
    "street": "Has No Name",
    "suite": "Apt. 123",
    "city": "Electri",
    "zipcode": "54321-6789"
  }
}
"""
When method post
Then status 201

You can also try setting the Accept to application/xml in your example and see what happens.

ptrthomas on 6 May 2018

👍1

@ptrthomas I would like to thank you a lot for your answer.
And I think, yes, the API I am trying on is badly designed as you said.

AyaAkl25 on 6 May 2018

👍1

Hi :)
I am new to API testing and I was testing out Karate to practice API testing but there was a weird thing that happened and I don't know if it is an issue or a misunderstanding from my side.

I am trying testing against "https://restful-booker.herokuapp.com/" APIs .. It is An API playground created by Mark Winteringham for those wanting to learn more about API testing and tools

I added my feature as follows:
  Scenario: POST /booking should return 200 status code
    Given url 'https://restful-booker.herokuapp.com/booking'
    And request read('post_booking_data.json')
    When method POST
    Then status 200
It didn't work and returned "418" although when I try the exact thing with postman, the 200 status code is returned successfully.
But then after reading another part in Karate documentation, I updated my feature to be as follows:
  Scenario: POST /booking should return 200 status code
    Given url 'https://restful-booker.herokuapp.com/booking'
    And request read('post_booking_data.json')
    And header Accept = 'application/json'
    When method POST
    Then status 200
This just went well and the test ran successfully only after I added "And header Accept = 'application/json'"

Is there anything that I was doing wrong or I didn't understand it correctly?

Thanks a lot!!

Thanks a lot finding solution from last 2 hours you give proper solution

Devendra7841 on 26 Jun 2020

Have you tried to iterate through each of the booking id to call "https://restful-booker.herokuapp.com/booking/:id" after calling "curl -i https://restful-booker.herokuapp.com/booking". I don't know how to do this in Karate. It is not working for me