Create tests for models

app/models/call_for_booth.rb

@@ -1,6 +1,8 @@
 class CallForBooth < ActiveRecord::Base
   belongs_to :conference
 
+  has_one :conference
+
   validates :start_date, :end_date, :booth_limit, presence: true
   validate :before_end_of_conference
   validate :start_date_before_end_date

spec/models/booth_spec.rb

@@ -0,0 +1,24 @@
+require 'spec_helper'
+
+describe 'Booth' do
+  subject { create(:booth) }
+  let!(:conference) { create(:conference) }
+
+  describe 'validation' do
+    it 'has a valid factory' do
+      expect(build(:booth)).to be_valid
+    end
+
+    it { is_expected.to validate_presence_of(:conference) }
+
+    it 'is not valid without a title' do
+      should validate_presence_of(:title)
+    end
+  end
+
+  describe 'association' do
+    it { is_expected.to belong_to(:conference) }
+    it { is_expected.to have_many(:booth_requests) }
+  end
+
+end

spec/models/call_for_booth_spec.rb

@@ -0,0 +1,15 @@
+require 'spec_helper'
+
+describe CallForBooth do
+  it 'has a valid factory' do
+    expect(build(:call_for_booths)).to be_valid
+  end
+
+  it 'is not valid without a start_date' do
+    should validate_presence_of(:start_date)
+  end
+
+  it 'is not valid without an end_date' do
+    should validate_presence_of(:end_date)
+  end
+end