Add method ContactNetwork#communicable?

app/models/contact_network.rb

@@ -32,4 +32,8 @@ class ContactNetwork < ApplicationRecord
   def to_param
     codename
   end
+
+  def communicable?
+    codename == 'email'
+  end
 end

factories/contact_networks.rb

@@ -1,8 +1,26 @@
 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :contact_network, class: ContactNetwork do
+  factory :contact_network do
     codename { Faker::Internet.unique.username 3..36, %w[_] }
     name { Faker::Company.unique.name }
   end
+
+  factory :email_contact_network, class: ContactNetwork do
+    initialize_with do
+      ContactNetwork.find_or_initialize_by codename: 'email'
+    end
+
+    codename { 'email' }
+    name { 'Email' }
+  end
+
+  factory :phone_contact_network, class: ContactNetwork do
+    initialize_with do
+      ContactNetwork.find_or_initialize_by codename: 'phone'
+    end
+
+    codename { 'phone' }
+    name { 'Phone' }
+  end
 end

spec/models/contact_network_spec.rb

@@ -75,4 +75,26 @@ RSpec.describe ContactNetwork do
     it { is_expected.not_to allow_value "\nFoo" }
     it { is_expected.not_to allow_value "Foo\n" }
   end
+
+  describe '#communicable?' do
+    specify do
+      expect(subject.communicable?).to equal false
+    end
+
+    context 'for email' do
+      subject { create :email_contact_network }
+
+      specify do
+        expect(subject.communicable?).to equal true
+      end
+    end
+
+    context 'for phone' do
+      subject { create :phone_contact_network }
+
+      specify do
+        expect(subject.communicable?).to equal false
+      end
+    end
+  end
 end