Change Cfp scopes to class methods

When no record matches the requested criteria a scope will return all
the records
In this case, if no record can be found we want the result to be nil

Also, make some readability fixes in specs

app/models/cfp.rb

@@ -3,9 +3,6 @@
 class Cfp < ActiveRecord::Base
   TYPES = %w(events booths tracks).freeze
 
-  scope :for_events, (-> { find_by(cfp_type: 'events') })
-  scope :for_tracks, (-> { find_by(cfp_type: 'tracks') })
-
   has_paper_trail ignore: [:updated_at], meta: { conference_id: :conference_id }
   belongs_to :program
 
@@ -79,6 +76,24 @@ class Cfp < ActiveRecord::Base
     (start_date..end_date).cover?(Date.current)
   end
 
+  ##
+  # Finds the cfp for events if it exists
+  #
+  # ====Returns
+  # * +Cfp+ -> The cfp with type 'events'
+  def self.for_events
+    find_by(cfp_type: 'events')
+  end
+
+  ##
+  # Finds the cfp for tracks if it exists
+  #
+  # ====Returns
+  # * +Cfp+ -> The cfp with type 'tracks'
+  def self.for_tracks
+    find_by(cfp_type: 'tracks')
+  end
+
   private
 
   def before_end_of_conference

spec/features/cfp_ability_spec.rb

@@ -73,7 +73,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(edit_admin_conference_program_cfp_path(conference.short_title, conference.program.cfp))
 
       # Event, booth, track cfps exist
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq root_path
 
@@ -83,7 +83,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
       # Only booth exists
-      cft.destroy!
+      call_for_tracks.destroy!
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
@@ -96,19 +96,19 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
       # Only Tracks cfp exists
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      visit edit_admin_conference_program_cfp_path(conference.short_title, cft)
-      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, cft)
+      visit edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
+      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
 
       # Event and track cfps exist
       create(:cfp, cfp_type: 'events', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      cft.destroy!
+      call_for_tracks.destroy!
       create(:event, program: conference.program)
       visit edit_admin_conference_program_event_path(conference.short_title, conference.program.events.first)
       expect(current_path).to eq(edit_admin_conference_program_event_path(conference.short_title, conference.program.events.first))

spec/features/organization_admin_ability_spec.rb

@@ -115,7 +115,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(edit_admin_conference_program_cfp_path(conference.short_title, conference.program.cfp))
 
       # Event, booth, track cfps exist
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq root_path
 
@@ -125,7 +125,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
       # Only booth exists
-      cft.destroy!
+      call_for_tracks.destroy!
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
@@ -138,19 +138,19 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
       # Only Tracks cfp exists
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      visit edit_admin_conference_program_cfp_path(conference.short_title, cft)
-      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, cft)
+      visit edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
+      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
 
       # Event and track cfps exist
       create(:cfp, cfp_type: 'events', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      cft.destroy!
+      call_for_tracks.destroy!
       visit admin_conference_program_events_path(conference.short_title)
       expect(current_path).to eq(admin_conference_program_events_path(conference.short_title))
 

spec/features/organizer_ability_spec.rb

@@ -121,7 +121,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(edit_admin_conference_program_cfp_path(conference.short_title, conference.program.cfp))
 
       # Event, booth, track cfps exist
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq root_path
 
@@ -131,7 +131,7 @@ feature 'Has correct abilities' do
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
       # Only booth exists
-      cft.destroy!
+      call_for_tracks.destroy!
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
@@ -144,19 +144,19 @@ feature 'Has correct abilities' do
       expect(current_path).to eq(new_admin_conference_program_cfp_path(conference.short_title))
 
       # Only Tracks cfp exists
-      cft = create(:cfp, cfp_type: 'tracks', program: conference.program)
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      visit edit_admin_conference_program_cfp_path(conference.short_title, cft)
-      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, cft)
+      visit edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
+      expect(current_path).to eq edit_admin_conference_program_cfp_path(conference.short_title, call_for_tracks)
 
       # Event and track cfps exist
       create(:cfp, cfp_type: 'events', program: conference.program)
       visit new_admin_conference_program_cfp_path(conference.short_title)
       expect(current_path).to eq new_admin_conference_program_cfp_path(conference.short_title)
 
-      cft.destroy!
+      call_for_tracks.destroy!
       visit admin_conference_program_events_path(conference.short_title)
       expect(current_path).to eq(admin_conference_program_events_path(conference.short_title))
 

spec/models/cfp_spec.rb

@@ -5,21 +5,35 @@ describe Cfp do
   let!(:conference) { create(:conference, end_date: Date.today) }
   let!(:cfp) { create(:cfp, start_date: Date.today - 2, end_date: Date.today - 1, program_id: conference.program.id) }
 
-  describe 'scope' do
-    describe '#for_events' do
-      it 'returns the cfp for events' do
-        expect(conference.program.cfps.for_events).to be_a Cfp
-        expect(conference.program.cfps.for_events.cfp_type).to eq('events')
-      end
-    end
-  end
-
   describe 'validations' do
     it { is_expected.to validate_presence_of(:cfp_type) }
     it { is_expected.to validate_inclusion_of(:cfp_type).in_array(Cfp::TYPES) }
     it { is_expected.to validate_uniqueness_of(:cfp_type).scoped_to(:program_id).case_insensitive }
   end
 
+  describe '.for_events' do
+    it 'returns the cfp for events when it exists' do
+      expect(conference.program.cfps.for_events).to be_a Cfp
+      expect(conference.program.cfps.for_events.cfp_type).to eq('events')
+    end
+
+    it 'returns nil when the cfp for events doesn\'t exist' do
+      conference.program.cfp.destroy
+      expect(conference.program.cfps.for_events).to eq nil
+    end
+  end
+
+  describe '.for_tracks' do
+    it 'returns the cfp for tracks when it exists' do
+      call_for_tracks = create(:cfp, cfp_type: 'tracks', program: conference.program, end_date: Date.today)
+      expect(conference.program.cfps.for_tracks).to eq call_for_tracks
+    end
+
+    it 'returns nil when the cfp for tracks doesn\'t exist' do
+      expect(conference.program.cfps.for_tracks).to eq nil
+    end
+  end
+
   describe '#before_end_of_conference' do
     describe 'fails to save cfp' do
       it 'when cfp end_date is after conference end_date' do