Updating hydra-pcdm dependency and adding test coverage for member_of…

…_collections method on Works

hydra-works.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.add_dependency 'hydra-pcdm', '>= 0.8'
+  spec.add_dependency 'hydra-pcdm', '>= 0.9'
   spec.add_dependency 'hydra-derivatives', '~> 3.0'
   spec.add_dependency 'hydra-file_characterization', '~> 0.3', '>= 0.3.3'
   spec.add_dependency 'om', '~> 3.1'

spec/hydra/works/models/work_spec.rb

@@ -267,4 +267,16 @@ class DummyExtWork < Hydra::Works::Work
       expect(work2.in_works).to eq [work1]
     end
   end
+
+  describe 'member_of_collections' do
+    let(:collection1) { Hydra::Works::Collection.create }
+    before do
+      work1.member_of_collections = [collection1]
+    end
+
+    it 'is a member of the collection' do
+      expect(work1.member_of_collections).to eq [collection1]
+      expect(work1.member_of_collection_ids).to eq [collection1.id]
+    end
+  end
 end