a simple controller test that asserts if a user is created

users_controller_spec.rb

require 'rails_helper'

RSpec.describe Api::Core::V1::UsersController, type: :controller do
  it 'must be able to create a user when first_name, last_name, email and password are specified' do
    post :create, params: {first_name: 'Cletus', last_name: 'Mccletus', email: 'cletus@mccletus.com', password: 'cletus12345', password_confirmation: 'cletus12345'}
    response_body = JSON.parse(response.body)
    expect(response_body.keys).to eql ["status", "code"]
    expect(response_body["code"]).to eql 200
  end

  it 'must fail gracefully when first_name, last_name, email or password are not specified when trying to create a user' do
    post :create, params: {last_name: 'Mccletus', email: 'cletus@mccletus.com', password: 'cletus12345', password_confirmation: 'cletus12345'}
    response_body = JSON.parse(response.body)
    expect(response_body["code"]).to eql 422
    post :create, params: {first_name: 'Cletus', email: 'cletus@mccletus.com', password: 'cletus12345', password_confirmation: 'cletus12345'}
    response_body = JSON.parse(response.body)
    expect(response_body["code"]).to eql 422
    post :create, params: { email: 'cletus@mccletus.com', password: 'cletus12345', password_confirmation: 'cletus12345'}
    response_body = JSON.parse(response.body)
    expect(response_body["code"]).to eql 422
  end
end