sip_integration_test.rb

    should "contain a sip_number_format that doesn't allow nil or bogus" do
      @sip_integration.set!(:sip_number_format => :E164)
      assert_raise ActiveRecord::StatementInvalid, /sip_number_format' cannot be null/ do
        @sip_integration.set!(:sip_number_format => nil)
      end
      assert_equal :E164, @sip_integration.sip_number_format
    end