Validate MembershipApplication#email

app/models/membership_application.rb

@@ -4,13 +4,16 @@ class MembershipApplication < ApplicationRecord
   belongs_to :account
   belongs_to :country_state, optional: true
 
+  validates :email, presence: true, format: Devise.email_regexp
+
   validates :first_name, presence: true
   validates :last_name, presence: true
   validates :date_of_birth, presence: true
-  validates :email, presence: true
   validates :phone_number, presence: true
 
   before_validation do
+    email&.strip!
+
     self.middle_name             = nil if middle_name.blank?
     self.occupation              = nil if occupation.blank?
     self.telegram_username       = nil if telegram_username.blank?

spec/models/membership_application_spec.rb

@@ -21,6 +21,25 @@ RSpec.describe MembershipApplication do
   it { is_expected.not_to validate_presence_of :organization_membership }
   it { is_expected.not_to validate_presence_of :comment }
 
+  describe '#email' do
+    def allow_value(*)
+      super.for :email
+    end
+
+    it { is_expected.to allow_value Faker::Internet.email }
+    it { is_expected.not_to allow_value Faker::Internet.username }
+
+    context 'when it has extra spaces' do
+      subject { create :membership_application, email: " #{email} " }
+
+      let(:email) { Faker::Internet.email }
+
+      specify do
+        expect(subject.email).to eq email
+      end
+    end
+  end
+
   describe '#middle_name' do
     context 'when it is empty' do
       subject { create :membership_application, middle_name: '' }