Rails NoMethodError: undefined method `valid?' - ruby-on-rails

Question

I am relatively new to rails and I can't figure out how to fix this bug.
So here are my models:
User
class User < ActiveRecord::Base
before_save { email.downcase! }
has_many :tickets
has_many :events, through: :tickets
validates :first_name, presence: true
validates :last_name, presence: true
VALID_EMAIL_REGEX = /\A[\w+\-.]+#[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
validates :email, presence: true, length: { maximum: 255},
format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
end
Event:
class Event < ActiveRecord::Base
has_many :tickets
has_many :users, through: :tickets
validates :event_title, presence: true
validates :event_place, presence: true
validates :event_description, presence: true
validates :event_date, presence: true
validates_numericality_of :event_number_tickets, presence: true, numericality: { only_integer: true }, greater_than: 0
end
Ticket:
class Ticket < ActiveRecord::Base
belongs_to :user
belongs_to :event
end
I have a test file for tickets which is
require 'test_helper'
class TicketTest < ActiveSupport::TestCase
def setup
#user = User.new(first_name: "Example", last_name: "User")
#event = Event.new(event_title: "Example Event",
event_place: "123 Example Ave.",
event_description: "Our example event for children to get introduced to technology",
event_date: DateTime.now,
event_number_tickets: 30)
#ticket = Ticket.new(event: #event, ticket_type: "regular", number_of_children: 1)
#user.tickets << #ticket
end
test "should be valid" do
assert #user.tickets.valid?
end
end
Whenever I run this test I get the following error:
NoMethodError: undefined method `valid?' for #<Ticket::ActiveRecord_Associations_CollectionProxy:0x007fae767617c8>
test/models/ticket_test.rb:18:in `block in <class:TicketTest>'
Do I have to create a custom valid method for this particular example.

Answer 1

There's not a valid? method for an ActiveRecord collection. If you're trying to test that the last Ticket you created is valid, you can do something like assert #ticket.valid?.
I think you might be doing a bit too much work in your setup method. You could try to just setup your User and Event model in the setup, and break the rest of what you described into different test blocks.