Have ActiveFedora respect read-only mode

config/initializers/active_fedora_general.rb

@@ -209,3 +209,9 @@ def initialize(file)
     get_values(:type) << self.class.type
   end
 end
+
+ActiveFedora::Common.module_eval do
+  def readonly?
+    @readonly || Settings.repository_read_only_mode
+  end
+end

spec/lib/active_fedora_base.rb

@@ -0,0 +1,41 @@
+# Copyright 2011-2024, The Trustees of Indiana University and Northwestern
+#   University.  Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed
+#   under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+#   CONDITIONS OF ANY KIND, either express or implied. See the License for the
+#   specific language governing permissions and limitations under the License.
+# ---  END LICENSE_HEADER BLOCK  ---
+
+require 'rails_helper'
+
+describe 'ActiveFedora::Base' do
+  let(:new_obj) { ActiveFedora::Base.new }
+  let(:obj) { ActiveFedora::Base.create }
+
+  # This tests changes overrides that are in config/initializers/active_fedora_general.rb
+  context 'when read-only mode' do
+    before { allow(Settings).to receive(:repository_read_only_mode).and_return(true) }
+
+    it 'raises ReadOnlyRecord for any write operation' do
+      expect { ActiveFedora::Base.create }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { new_obj.save }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { new_obj.save! }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.save }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.save! }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.update }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.update! }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.delete }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.destroy }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.destroy! }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { obj.eradicate }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { ActiveFedora::Base.eradicate(obj.to_uri) }.to raise_error ActiveFedora::ReadOnlyRecord
+      expect { ActiveFedora::Base.delete_tombstone(obj.to_uri) }.to raise_error ActiveFedora::ReadOnlyRecord
+    end
+  end
+end

spec/models/ability_spec.rb

@@ -22,7 +22,8 @@
   end
 
   describe 'repository read-only mode' do
-    let(:media_object) { FactoryBot.create(:media_object) }
+    # Next line is let! to ensure that it runs before the before block which would stop the object from being created
+    let!(:media_object) { FactoryBot.create(:media_object) }
     let(:media_object_proxy) { SpeedyAF::Base.find(media_object.id) }
     let(:collection) { media_object.collection }
     let(:collection_proxy) { SpeedyAF::Base.find(collection.id) }