From 6ff4bd80e0394260c8cd300cfb051451fc7e358f Mon Sep 17 00:00:00 2001
From: Azul <azul@leap.se>
Date: Thu, 13 Dec 2012 15:47:08 +0100
Subject: ensure users do not have duplicate email aliases

nor aliases that are the same as the original email for that matter
---
 users/app/models/user.rb              | 21 +++++++++++++++++++++
 users/test/unit/email_aliases_test.rb | 22 ++++++++++++++++++++++
 2 files changed, 43 insertions(+)

(limited to 'users')

diff --git a/users/app/models/user.rb b/users/app/models/user.rb
index e5e388b..0eb244c 100644
--- a/users/app/models/user.rb
+++ b/users/app/models/user.rb
@@ -33,6 +33,10 @@ class User < CouchRest::Model::Base
   validates :email_forward,
     :format => { :with => /\A(([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,}))?\Z/, :message => "needs to be a valid email address"}
 
+  validate :no_duplicate_email_aliases
+
+  validate :email_aliases_differ_from_email
+
   timestamps!
 
   design do
@@ -115,6 +119,23 @@ class User < CouchRest::Model::Base
     end
   end
 
+  ##
+  #  Validation Functions
+  ##
+
+  # TODO: How do we handle these errors?
+  def no_duplicate_email_aliases
+    if email_aliases.count != email_aliases.map(&:email).uniq.count
+      errors.add(:email_aliases, "include a duplicate")
+    end
+  end
+
+  def email_aliases_differ_from_email
+    if email_aliases.map(&:email).include?(email)
+      errors.add(:email_aliases, "include the original email address")
+    end
+  end
+
   protected
   def password
     password_verifier
diff --git a/users/test/unit/email_aliases_test.rb b/users/test/unit/email_aliases_test.rb
index 5ded5bb..cec0c0b 100644
--- a/users/test/unit/email_aliases_test.rb
+++ b/users/test/unit/email_aliases_test.rb
@@ -20,6 +20,28 @@ class EmailAliasTest < ActiveSupport::TestCase
     assert_equal email_alias, @user.email_aliases.first.to_s
   end
 
+  test "duplicated email aliases are invalid" do
+    email_alias = "valid_alias@domain.net"
+    email_aliases = {
+      "0" => {:email => email_alias},
+      "1" => {:email => email_alias}
+      }
+    @user.attributes = {:email_aliases_attributes => email_aliases}
+    @user.save
+    # add some more
+    @user.attributes = {:email_aliases_attributes => email_aliases}
+    assert @user.changed?
+    assert !@user.valid?
+  end
+
+  test "email is invalid as email alias" do
+    email_alias = "valid_alias@domain.net"
+    email_aliases = { "0" => {:email => email_alias} }
+    @user.attributes = {:email_aliases_attributes => email_aliases, :email => email_alias}
+    assert @user.changed?
+    assert !@user.valid?
+  end
+
   test "find user by email alias" do
     email_alias = "valid_alias@domain.net"
     @user.attributes = {:email_aliases_attributes => {"0" => {:email => email_alias}}}
-- 
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