contact_imports_controller_spec.rb

    it "creates a new ContactImport based on type" do
      ["vcard", "csv", "mailchimp"].each do |import_format|
        import_class = ContactImport.import_mapping[import_format]

        post :create, :contact_import => {:import_format => import_format}

        assigns(:contact_import).should_not be_nil
        assigns(:contact_import).should be_a_kind_of(import_class)
        response.should redirect_to :edit_contact_import
      end
    end