I’m trying to write a test for a controller. The “create” action expects form data and rejects as “unprocessable entity” if the form data doesn’t validate:

Failure:
ContactsControllerTest#test_should_post_create [test/controllers/contacts_controller_test.rb:36]:
Expected response to be a <3XX: redirect>, but was a <422: Unprocessable Entity>

I’m including model, controller, test-controller and fixtures below. Authorization is still out of the box but shouldn’t be a factor here (other tests run fine).

I suspect that the foreign keys in the params are the culprit here but I don’t know how to check for this. I also tried @saluation.id and @debitor.id in the test params.

Model

class Contact < ApplicationRecord
    validates :last_name, presence: true
    validates :email, format: {
        with: URI::MailTo::EMAIL_REGEXP
    }
    belongs_to :salutation
    belongs_to :debitor

Controller

class ContactsController < ApplicationController

  def create
      @contact = Contact.new(contact_params)
      @debitors = Debitor.all
      @salutations = Salutation.all
    
      if @contact.save 
        redirect_to contacts_path
      else
        render :new, status: :unprocessable_entity
      end
  end

  private
  def contact_params
    params.require(:contact).permit(:last_name, :first_name, :email, :salutation_id, :debitor_id)
  end

end

Test

require "test_helper"

class ContactsControllerTest < ActionDispatch::IntegrationTest
  setup do
    @user = users(:lazaro_nixon)
    @contact = contacts(:one)
    @salutation = salutations(:one)
    @debitor = debitors(:one)
  end


  test "should post create" do
    sign_in_as @user

    post contacts_url, :params => { :contact => { last_name: "Lastname", first_name: "Firstname", email: "[email protected]", salutation: @salutation, debitor: @debitor }}
    assert_response :redirect
    follow_redirect!
    assert_response :success
  end

end

Fixtures – contacts

one:
  last_name: MyString
  first_name: MyString
  email: MyString
  salutation: one
  debitor: one

Fixtures – salutations

one:
  salutation: MyString

Fixtures – debitors

one:
  company: MyString
  street: MyString
  house_number: MyString
  zip: 1
  city: MyString
  payment_terms: one