Fix/blank contact email

app/forms/concerns/waste_carriers_engine/can_set_custom_error_message.rb

@@ -9,8 +9,8 @@ def self.custom_error_messages(attribute, *errors)
         messages = {}
 
         errors.each do |error|
-          messages[error] = I18n.t("activemodel.errors.models."\
-                                       "waste_carriers_engine/#{form_name}"\
+          messages[error] = I18n.t("activemodel.errors.models." \
+                                       "waste_carriers_engine/#{form_name}" \
                                        ".attributes.#{attribute}.#{error}")
         end
 

app/forms/waste_carriers_engine/contact_email_form.rb

@@ -11,6 +11,10 @@ class ContactEmailForm < ::WasteCarriersEngine::BaseForm
     after_initialize :populate_confirmed_email
 
     def submit(params)
+      # Blank email address vluaes should be processed as nil
+      params[:contact_email] = nil if params[:contact_email].blank?
+      params[:confirmed_email] = nil if params[:confirmed_email].blank?
+
       # Assign the params for validation and pass them to the BaseForm method for updating
       self.confirmed_email = params[:confirmed_email]
       self.no_contact_email = params[:no_contact_email]

app/validators/waste_carriers_engine/contact_email_validator.rb

@@ -6,7 +6,7 @@ class ContactEmailValidator < ActiveModel::EachValidator
 
     def validate(record)
       if WasteCarriersEngine.configuration.host_is_back_office? && record.no_contact_email == "1"
-        if record.contact_email.present?
+        unless record.contact_email.nil?
           add_validation_error(record, :no_contact_email, :not_blank)
           return false
         end

spec/forms/waste_carriers_engine/contact_email_forms_spec.rb

@@ -30,11 +30,13 @@ module WasteCarriersEngine
       end
 
       context "when the form is valid" do
+        before { contact_email_form.transient_registration.contact_email = nil }
+
         context "when running in the front office" do
           before { allow(WasteCarriersEngine.configuration).to receive(:host_is_back_office?).and_return(false) }
 
           context "with an email address" do
-            let(:contact_email) { contact_email_form.contact_email }
+            let(:contact_email) { Faker::Internet.email }
 
             it_behaves_like "should submit"
           end
@@ -44,16 +46,26 @@ module WasteCarriersEngine
           before { allow(WasteCarriersEngine.configuration).to receive(:host_is_back_office?).and_return(true) }
 
           context "with an email address" do
-            let(:contact_email) { contact_email_form.contact_email }
+            let(:contact_email) { Faker::Internet.email }
 
             it_behaves_like "should submit"
+
+            it "populates contact_email" do
+              expect { contact_email_form.submit(ActionController::Parameters.new(params)) }
+                .to change { contact_email_form.transient_registration.contact_email }.to(contact_email)
+            end
           end
 
-          context "without an email address" do
-            let(:contact_email) { nil }
+          context "with a blank email address" do
+            let(:contact_email) { "" }
             let(:no_contact_email) { "1" }
 
             it_behaves_like "should submit"
+
+            it "does not populate contact_email" do
+              expect { contact_email_form.submit(ActionController::Parameters.new(params)) }
+                .not_to change { contact_email_form.transient_registration.contact_email }.from(nil)
+            end
           end
         end
       end
@@ -80,7 +92,7 @@ module WasteCarriersEngine
           end
 
           context "with an email address and with the no-email-address option selected" do
-            let(:contact_email) { contact_email_form.contact_email }
+            let(:contact_email) { Faker::Internet.email }
             let(:no_contact_email) { "1" }
 
             it_behaves_like "should not submit"