FIX: suggest name when username/name is provided

app/models/user.rb

@@ -288,7 +288,13 @@ class User < ActiveRecord::Base
 
   def self.suggest_name(email)
     return "" if email.blank?
-    email[/\A[^@]+/].tr(".", " ").titleize
+    if email[/\A[^@]+/].present?
+      # email provided
+      email[/\A[^@]+/].tr(".", " ").titleize
+    else
+      # username/name provided
+      email[/[^@]+\z/].tr(".", " ").titleize
+    end
   end
 
   def self.find_by_username_or_email(username_or_email)

spec/models/user_spec.rb

@@ -449,6 +449,14 @@ describe User do
     it 'is able to guess a decent name from an email' do
       expect(User.suggest_name('sam.saffron@gmail.com')).to eq('Sam Saffron')
     end
+
+    it 'is able to guess a decent name from username' do
+      expect(User.suggest_name('@sam.saffron')).to eq('Sam Saffron')
+    end
+
+    it 'is able to guess a decent name from name' do
+      expect(User.suggest_name('sam saffron')).to eq('Sam Saffron')
+    end
   end
 
   describe 'username format' do