update to use new start accession method

app/lib/pre_assembly/digital_object.rb

@@ -156,7 +156,7 @@ def start_accession
           description: 'pre-assembly re-accession',
           opening_user_name: bundle.bundle_context.user.sunet_id
         }
-      object_client.accession(version_params)
+      object_client.accession.start(version_params)
     end
   end
 end

spec/lib/pre_assembly/digital_object_spec.rb

@@ -335,29 +335,32 @@ def add_object_files(extension = 'tif', all_files_public: false)
 
   describe '#start_accession' do
     subject(:start_accession) { object.send(:start_accession) }
-    subject(:version_params) {
+
+    before do
+      allow(Dor::Services::Client).to receive(:object).and_return(object_client)
+      allow(object).to receive(:druid).and_return(druid)
+    end
+
+    let(:version_params) do
       {
         significance: 'major',
         description: 'pre-assembly re-accession',
         opening_user_name: bc.user.sunet_id
       }
-    }
-    before do
-      allow(Dor::Services::Client).to receive(:object).and_return(object_client)
-      allow(object).to receive(:druid).and_return(druid)
     end
-
     let(:version_client) { instance_double(Dor::Services::Client::ObjectVersion, current: '5') }
-    let(:object_client) { instance_double(Dor::Services::Client::Object, version: version_client) }
+    let(:accession_object) { instance_double(Dor::Services::Client::Accession, start: true) }
+    let(:object_client) { instance_double(Dor::Services::Client::Object, version: version_client, accession: accession_object) }
     let(:service_url) { Settings.dor_services_url }
 
     context 'when api client is successful' do
       before do
-        allow(object_client).to receive(:accession).and_return(true)
+        allow(object_client.accession).to receive(:start).and_return(true)
       end
+
       it 'starts accession' do
         start_accession
-        expect(object_client).to have_received(:accession).with(version_params)
+        expect(object_client.accession).to have_received(:start).with(version_params)
       end
     end