Add model tests

Author: jamiebenstead

spec/models/school_spec.rb

@@ -154,6 +154,15 @@
       expect(duplicate_school).not_to be_valid
     end
 
+    it('returns an error if reference is not unique') do
+      school.reference = '100000'
+      school.save!
+
+      duplicate_school = build(:school, reference: '100000')
+      duplicate_school.valid?
+      expect(duplicate_school.errors.details[:reference]).to include(hash_including(error: :taken))
+    end
+
     it 'accepts a valid reference format (5-6 digits)' do
       school.reference = '100000'
       expect(school).to be_valid
@@ -233,6 +242,12 @@
       expect(duplicate_school).not_to be_valid
     end
 
+    it 'returns error if district_nces_id is not unique' do
+      duplicate_school = build(:school, country_code: 'US', district_nces_id: '010000000001')
+      duplicate_school.valid?
+      expect(duplicate_school.errors.details[:district_nces_id]).to include(hash_including(error: :taken))
+    end
+
     it 'accepts a valid district_nces_id format (12 digits)' do
       us_school.district_nces_id = '010000000001'
       expect(us_school).to be_valid
@@ -276,6 +291,12 @@
       expect(duplicate_school).not_to be_valid
     end
 
+    it 'returns error if school_roll_number is not unique' do
+      duplicate_school = build(:school, school_roll_number: '01572D', country_code: 'IE')
+      duplicate_school.valid?
+      expect(duplicate_school.errors.details[:school_roll_number]).to include(hash_including(error: :taken))
+    end
+
     it 'accepts a valid alphanumeric school_roll_number' do
       ireland_school.school_roll_number = '01572D'
       expect(ireland_school).to be_valid