Validate School rejected/verified timestamps

To ensure only one of these fields can be set at a time.

Author: chrisroos

app/models/school.rb

@@ -17,6 +17,8 @@ class School < ApplicationRecord
   validates :creator_id, presence: true, uniqueness: true
   validates :creator_agree_authority, presence: true, acceptance: true
   validates :creator_agree_terms_and_conditions, presence: true, acceptance: true
+  validates :rejected_at, absence: { if: proc { |school| school.verified? } }
+  validates :verified_at, absence: { if: proc { |school| school.rejected? } }
 
   before_validation :normalize_reference
 

spec/models/school_spec.rb

@@ -177,6 +177,18 @@
       school.creator_agree_terms_and_conditions = false
       expect(school).to be_invalid
     end
+
+    it 'cannot have #rejected_at set when #verified_at is present' do
+      school.update!(verified_at: Time.zone.now)
+      school.update(rejected_at: Time.zone.now)
+      expect(school.errors[:rejected_at]).to include('must be blank')
+    end
+
+    it 'cannot have #verified_at set when #rejected_at is present' do
+      school.update!(rejected_at: Time.zone.now)
+      school.update(verified_at: Time.zone.now)
+      expect(school.errors[:verified_at]).to include('must be blank')
+    end
   end
 
   describe '#creator' do