Improve RegistrantChangeMailer

- Do not show registrant address unless "address_processing" is enabled
- Add missing registrant state and zip attributes

#480

spec/views/mailers/shared/registrant/_registrant.en.html.erb_spec.rb

@@ -2,5 +2,5 @@ require 'rails_helper'
 require_relative 'registrant_shared'
 
 RSpec.describe 'mailers/shared/registrant/_registrant.en.html.erb' do
-  include_examples 'domain mailer registrant info'
+  include_examples 'domain mailer registrant info', 'mailers/shared/registrant/_registrant.en.html.erb'
 end

spec/views/mailers/shared/registrant/_registrant.en.text.erb_spec.rb

@@ -2,5 +2,5 @@ require 'rails_helper'
 require_relative 'registrant_shared'
 
 RSpec.describe 'mailers/shared/registrant/_registrant.en.text.erb' do
-  include_examples 'domain mailer registrant info'
+  include_examples 'domain mailer registrant info', 'mailers/shared/registrant/_registrant.en.text.erb'
 end

spec/views/mailers/shared/registrant/_registrant.et.html.erb_spec.rb

@@ -2,5 +2,5 @@ require 'rails_helper'
 require_relative 'registrant_shared'
 
 RSpec.describe 'mailers/shared/registrant/_registrant.et.html.erb' do
-  include_examples 'domain mailer registrant info'
+  include_examples 'domain mailer registrant info', 'mailers/shared/registrant/_registrant.et.html.erb'
 end

spec/views/mailers/shared/registrant/_registrant.et.text.erb_spec.rb

@@ -2,5 +2,5 @@ require 'rails_helper'
 require_relative 'registrant_shared'
 
 RSpec.describe 'mailers/shared/registrant/_registrant.et.text.erb' do
-  include_examples 'domain mailer registrant info'
+  include_examples 'domain mailer registrant info', 'mailers/shared/registrant/_registrant.et.text.erb'
 end

spec/views/mailers/shared/registrant/registrant_shared.rb

@@ -1,25 +1,65 @@
 require 'rails_helper'
 
-RSpec.shared_examples 'domain mailer registrant info' do
+RSpec.shared_examples 'domain mailer registrant info' do |template_path|
+  let(:template_path) { template_path }
   let(:registrant) { instance_spy(RegistrantPresenter) }
 
   before :example do
     allow(view).to receive(:registrant).and_return(registrant)
+    allow(view).to receive(:address_processing)
   end
 
-  attributes = %i(
-    name
-    ident
-    street
-    city
-    country
-  )
+  it 'has name' do
+    allow(registrant).to receive(:name).and_return('test name')
+    render template: template_path
+    expect(rendered).to have_text('test name')
+  end
 
-  attributes.each do |attr_name|
-    it "has #{attr_name}" do
-      expect(registrant).to receive(attr_name).and_return("test #{attr_name}")
-      render
-      expect(rendered).to have_text("test #{attr_name}")
+  it 'has ident' do
+    allow(registrant).to receive(:ident).and_return('test ident')
+    render template: template_path
+    expect(rendered).to have_text('test ident')
+  end
+
+  address_attributes = %i[street city state zip country]
+
+  context 'when address processing is enabled' do
+    before :example do
+      allow(view).to receive(:address_processing).and_return(true)
+    end
+
+    address_attributes.each do |attr_name|
+      it "has #{attr_name}" do
+        allow(registrant).to receive(attr_name).and_return("test #{attr_name}")
+        render template: template_path
+        expect(rendered).to have_text("test #{attr_name}")
+      end
+    end
+
+    it 'has no ident country' do
+      allow(registrant).to receive(:ident_country).and_return('test ident country')
+      render template: template_path
+      expect(rendered).to_not have_text('test ident country')
+    end
+  end
+
+  context 'when address processing is disabled' do
+    before :example do
+      allow(view).to receive(:address_processing).and_return(false)
+    end
+
+    address_attributes.each do |attr_name|
+      it "has no #{attr_name}" do
+        allow(registrant).to receive(attr_name).and_return("test #{attr_name}")
+        render template: template_path
+        expect(rendered).to_not have_text("test #{attr_name}")
+      end
+    end
+
+    it 'has ident country' do
+      allow(registrant).to receive(:ident_country).and_return('test ident country')
+      render template: template_path
+      expect(rendered).to have_text('test ident country')
     end
   end
 end