Format domains

Removing leading @ symbols and lower case domains

Author: PetarSimonovic

app/models/school_email_domain.rb

@@ -1,3 +1,15 @@
+# frozen_string_literal: true
+
 class SchoolEmailDomain < ApplicationRecord
-    belongs_to :school
-end
+  belongs_to :school
+
+  before_validation :format_domain
+
+  private
+
+  def format_domain
+    return if domain.nil?
+
+    self.domain = domain.to_s.strip.sub(/\A@+/, '').downcase
+  end
+end

spec/models/school_email_domain_spec.rb

@@ -14,4 +14,18 @@
     it 'has a domain' do
         expect(school_email_domain.domain).to eq('example.edu')
     end
+
+    it 'downcases the domain' do
+        school_email_domain = described_class.new(school: school, domain: 'EXAMPLE.EDU')
+        school_email_domain.valid?
+
+        expect(school_email_domain.domain).to eq('example.edu')
+    end
+
+    it 'removes a leading @' do
+        school_email_domain = described_class.new(school: school, domain: '@example.edu')
+        school_email_domain.valid?
+
+        expect(school_email_domain.domain).to eq('example.edu')
+    end
 end