Validating our payload

So far, we've been writing tests that ensure our request is valid and well-formed; in other words, making sure they are syntactically correct. Next, we are going to shift our focus to writing test cases that look at the payload object itself, ensuring that the payload has the correct structure and that it is semantically correct.

Checking for required fields

In our requirements, we specified that in order to create a user account, the client must provide at least the email and password fields. So, let's write a test for this.

 

 

In our spec/cucumber/features/users/create/main.feature file, add the following scenario outline:

Scenario Outline: Bad Request Payload

  When the client creates a POST request to /users
  And attaches a Create User payload which is missing the <missingFields> field
  And sends the request
  Then our API should respond with a 400 HTTP status code
  And the payload of the response should be a JSON object
  And contains a message property which...