Adds publishing_request_cancellation mailer template and test

app/models/mailer.rb

@@ -34,7 +34,7 @@ def request_publish_approval(gatekeeper, publisher, resources)
     publish_notification gatekeeper, publisher, resources, "A #{Seek::Config.instance_name} member requested your approval to publish some items."
   end
 
-    def publishing_request_cancellation(gatekeeper, publisher, resources)
+  def publishing_request_cancellation(gatekeeper, publisher, resources)
     @gatekeeper = gatekeeper
     publish_notification gatekeeper, publisher, resources, "A #{Seek::Config.instance_name} member cancelled a publishing approval request."
   end

app/views/mailer/publishing_request_cancellation.text.erb

@@ -0,0 +1,16 @@
+Hi <%= @gatekeeper.name -%>,
+
+    The <%= Seek::Config.instance_name %> user <%= @publisher.name -%>, <%= person_url(@publisher) -%>, has cancelled a request previously sent to you to publish the following item(s):
+    <% @resources.each do |resource|%>
+        <% controller=resource.class.name.underscore.pluralize -%>
+        <%= resource.model_name.human -%>: <%= resource.title -%> - <%= url_for(:action=>:show,:controller=>controller,:id=>resource, :only_path => false) -%>
+
+    <% end %>
+
+    You do not need to take action.
+
+    You can contact <%= @publisher.first_name.capitalize -%> by replying to this email.
+
+    This is an automated email.
+
+- <%= Seek::Config.instance_admins_name %> Team

test/fixtures/mailer/publishing_request_cancellation

@@ -0,0 +1,13 @@
+Hi Gatekeeper Last,
+
+    The Sysmo SEEK user Aaron Spiggle, http://localhost:3000/people/-requester_id-, has cancelled a request previously sent to you to publish the following item(s):
+        Data file: Picture - http://localhost:3000/data_files/-df_id-
+        Model: Teusink - http://localhost:3000/models/-model_id-
+
+    You do not need to take action.
+
+    You can contact Aaron by replying to this email.
+
+    This is an automated email.
+
+- SysMO-DB Team

test/unit/mailer_test.rb

@@ -116,6 +116,28 @@ def setup
     assert_equal expected_text, encode_mail(Mailer.request_publishing(owner, publisher, resources))
   end
 
+  test 'cancel publishing request' do
+    gatekeeper = FactoryBot.create(:asset_gatekeeper, first_name: 'Gatekeeper', last_name: 'Last')
+    person = FactoryBot.create(:person, project: gatekeeper.projects.first)
+    resources = [FactoryBot.create(:data_file, projects: gatekeeper.projects, title: 'Picture', contributor:person), FactoryBot.create(:teusink_model, projects: gatekeeper.projects, title: 'Teusink', contributor:person)]
+    requester = FactoryBot.create(:person, first_name: 'Aaron', last_name: 'Spiggle')
+
+    @expected.subject = 'A Sysmo SEEK member cancelled a publishing approval request.'
+    @expected.to = gatekeeper.email_with_name
+    @expected.from = 'no-reply@sysmo-db.org'
+    @expected.reply_to = requester.person.email_with_name
+
+    @expected.body = read_fixture('publishing_request_cancellation')
+
+    expected_text = encode_mail(@expected)
+    expected_text.gsub!('-person_id-', gatekeeper.id.to_s)
+    expected_text.gsub!('-df_id-', resources[0].id.to_s)
+    expected_text.gsub!('-model_id-', resources[1].id.to_s)
+    expected_text.gsub!('-requester_id-', requester.person.id.to_s)
+
+    assert_equal expected_text, encode_mail(Mailer.publishing_request_cancellation(gatekeeper, requester, resources))
+  end
+
   test 'gatekeeper approval feedback' do
     gatekeeper = FactoryBot.create(:asset_gatekeeper, first_name: 'Gatekeeper', last_name: 'Last')
     person = FactoryBot.create(:person, project: gatekeeper.projects.first)