uppercases document number

app/models/verification/residence.rb

@@ -19,6 +19,7 @@ class Verification::Residence
     self.date_of_birth = parse_date('date_of_birth', attrs)
     attrs = remove_date('date_of_birth', attrs)
     super
+    self.document_number.upcase!
   end
 
   def save

spec/models/residence_spec.rb

@@ -40,6 +40,13 @@ describe Verification::Residence do
     end
   end
 
+  describe "new" do
+    it "should upcase document number" do
+      residence = Verification::Residence.new({document_number: "x1234567z"})
+      expect(residence.document_number).to eq("X1234567Z")
+    end
+  end
+
   describe "save" do
 
     it "should store document number and type" do