Removing Edit button from show of approved work

Only curators and super admins should have edit capabilites on approved works.
There is a pending test, becuase there is a bug on the edit screen for approved works (#505).

app/views/works/show.html.erb

@@ -40,7 +40,9 @@
 </style>
 
 <div>
-  <%= link_to("Edit", edit_work_path(@work, wizard: @work.draft? ? true : nil), class: "btn btn-primary") %>
+  <% if @work.draft?  || @work.awaiting_approval? || current_user.has_role?(:collection_admin, @work.collection) %>
+    <%= link_to("Edit", edit_work_path(@work, wizard: @work.draft? ? true : nil), class: "btn btn-primary") %>
+  <% end %>
   <% if @work.awaiting_approval? && current_user.has_role?(:collection_admin, @work.collection) %>
     <%= button_to("Approve Dataset", approve_work_path(@work), class: "btn btn-secondary", method: :post) %>
   <% elsif @work.approved? %>

spec/system/view_data_in_s3_spec.rb

@@ -44,7 +44,7 @@
       work.pre_curation_uploads.attach(file)
       work.save
       work.reload
-      work.state = "accepted"
+      work.state = "awaiting_approval"
       work.save
 
       visit work_path(work)
@@ -59,5 +59,32 @@
       expect(page).to have_content ActiveStorage::Filename.new(file1.filename).to_s
       expect(page).to have_content ActiveStorage::Filename.new(file2.filename).to_s
     end
+
+    context "when item is approved" do
+      let(:work) { FactoryBot.create(:approved_work) }
+      it "shows data from S3" do
+        stub_s3(data: s3_data)
+        visit work_path(work)
+        expect(page).to have_content file1.filename
+        expect(page).to have_content file2.filename
+
+        expect(page).not_to have_button("Edit")
+      end
+
+      context "when user is a curator" do
+        let(:user) { FactoryBot.create(:research_data_moderator) }
+        pending "shows data from S3" do
+          stub_s3(data: s3_data)
+          visit work_path(work)
+          expect(page).to have_content file1.filename
+          expect(page).to have_content file2.filename
+
+          click_on "Edit"
+          expect(page).to have_content file1.filename
+          expect(page).to have_content file2.filename
+
+        end
+      end
+    end
   end
 end