How to test conditional validation using rspec-rails 3.0.0 and toa-matchers 2.5.0

Question

I am running a Rails 4 application with rspec-rails 3.0.0 and musta-matchers 2.5.0, and I have an Event model that has some conditional checks:

class Event < ActiveRecord::Base
  validates :name, :location, :time, :city, :zipcode, :user, :state, presence: true
  validates :post_text, presence: true, if: :happened?
  validates :pre_text, presence: true, unless: :happened?

  belongs_to :community
  belongs_to :user
  belongs_to :state

  def happened?
    (self.time < Time.now) ? true : false
  end
end

My event_spec.rb looks like this:

require 'spec_helper'

describe Event do
  before { @event = FactoryGirl.build(:future_event) }

  subject { @event }

  it { should validate_presence_of(:time) }
  it { should validate_presence_of(:name) }
  it { should validate_presence_of(:location) }
  it { should validate_presence_of(:user) }
  it { should validate_presence_of(:city) }
  it { should validate_presence_of(:state) }
  it { should validate_presence_of(:zipcode) }

  it { should belong_to(:state) }
  it { should belong_to(:user) }

  it 'has pre_text if future event' do
     expect(FactoryGirl.create(:future_event)).to be_valid
  end

  it 'has post_text if past event' do
    expect(FactoryGirl.create(:past_event)).to be_valid
  end
end

But when I run the tests, my block it { should validate_presence_of(:time) }fails because it continues to execute the remaining checks and throws an exception for conditional checks, because self.time is zero. I applied a hacker fix by checking time.present? in what happened? method. But can anyone help me figure out what is the best test method for conditional validations requiring a different field?

Answer 1

, , . , time , , , #apped? time , . , , #happened?, , ( , ).

Answer 2

, , . :

context "if happened" do
  before { allow(subject).to receive(:happened?).and_return(true) }
  it { is_expected.to validate_presence_of(:time) }
end

,

Answer 3

:

def happened?
  (self.time < Time.now) ? true : false
end

def happened?
  self.time < Time.now
end