Add screening by IP address. When deleting a user as a spammer, block all signups from the same IP address.

spec/components/validators/allowed_ip_address_validator_spec.rb

@@ -0,0 +1,33 @@
+require 'spec_helper'
+
+describe AllowedIpAddressValidator do
+
+  let(:record) { Fabricate.build(:user, ip_address: '99.232.23.123') }
+  let(:validator) { described_class.new({attributes: :ip_address}) }
+  subject(:validate) { validator.validate_each(record, :ip_address, record.ip_address) }
+
+  context "ip address should be blocked" do
+    it 'should add an error' do
+      ScreenedIpAddress.stubs(:should_block?).returns(true)
+      validate
+      record.errors[:ip_address].should be_present
+    end
+  end
+
+  context "ip address should not be blocked" do
+    it "shouldn't add an error" do
+      ScreenedIpAddress.stubs(:should_block?).returns(false)
+      validate
+      record.errors[:ip_address].should_not be_present
+    end
+  end
+
+  context 'ip_address is nil' do
+    it "shouldn't add an error" do
+      ScreenedIpAddress.expects(:should_block?).never
+      record.ip_address = nil
+      validate
+      record.errors[:ip_address].should_not be_present
+    end
+  end
+end