fix: specs

app/helpers/contact_helper.rb

@@ -31,7 +31,7 @@ module ContactHelper
   end
 
   def valid_number?(full_name)
-    full_name.gsub(/\s+/, '').match?(/\A\+?\d+\z/)
+    TelephoneNumber.parse(full_name).valid?
   end
 
   def single_word_name_hash(full_name)

spec/helpers/contact_helper_spec.rb

@@ -63,8 +63,8 @@ RSpec.describe ContactHelper do
     end
 
     it 'handle name with mobile number with spaces correctly' do
-      full_name = '+1 234 567 890'
-      expected_result = { first_name: '+1 234 567 890', last_name: nil, middle_name: nil, prefix: nil, suffix: nil }
+      full_name = '+1 423-423-4234'
+      expected_result = { first_name: '+1 423-423-4234', last_name: nil, middle_name: nil, prefix: nil, suffix: nil }
       expect(helper.parse_name(full_name)).to eq(expected_result)
     end