How to complete the challenge PUT /todos/id (400) no title

How to use a PUT request to trigger validation errors during updating of a todo item in the application using a partial payload.

PUT /todos/id (400) no title

Issue a PUT request to fail when trying to update a todo using a partial payload that does not include a title

• PUT request will update a todo if the provided id exists /todos/id end point
  • e.g. PUT /todos/3 for a todo with id==3
• 400 is an failure code, in this case it means the request fails validation
• The body of the message should be a json or xml partial set of todo details,
• and the json or xml should be defined in the content-type header
• the id does not need to be included in the payload, but if it is then it should match the id in the url

Basic Instructions

• Issue a PUT request to end point "/todos/id"
  • where id is replaced with the id of an existing todo
    • if you don't know any then a GET /todos would show a list of todos
  • https://apichallenges.eviltester.com/todos/id
• The request should have an X-CHALLENGER header to track challenge completion
• The content-type in the message should be application/json because we are sending a JSON payload
• The Payload should have a partial set of todo details. The title should not be included e.g.

{
  "description": "partial update for description"
}

• Title is a mandatory field, without a default value so this will request fail validation
• Any id included in the payload should be the same as the id of the url because we cannot update the id, the id is auto generated.
• The response status code should be 400 when the details are invalid.
• The body of the response will a JSON showing the error message.

{
  "errorMessages": [
    "title : field is mandatory"
  ]
}

NOTE: if you haven't read the documentation and don't know what format to use then issue a GET request for a single entity and the payload format for the POST is likely to be pretty close.

NOTE: because you add an id to the payload you risk triggering an error validation if the id in the payload is different from the id in the URL.

Example Request

> PUT /todos/3 HTTP/1.1
> Host: apichallenges.eviltester.com
> User-Agent: rest-client
> X-CHALLENGER: x-challenger-guid
> Content-Type: application/json
> Accept: */*
> Content-Length: 32

|   {
|     "description": "partial update for description"
|   }

Example Response

< HTTP/1.1 400 Bad Request
< Connection: close
< Date: Sat, 06 Feb 2021 12:08:58 GMT
< Content-Type: application/json
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Headers: *
< X-Challenger: x-challenger-guid
< Server: Jetty(9.4.z-SNAPSHOT)
< Via: 1.1 vegur

Returned body:

{
  "errorMessages": [
    "title : field is mandatory"
  ]
}