Mark proxy_class_name as private

Add spec for repository proxying

ee/lib/elastic/multi_version_class_proxy.rb

@@ -19,6 +19,8 @@ module Elastic
       end
     end
 
+    private
+
     def proxy_class_name
       "#{@data_class.name}ClassProxy"
     end

ee/lib/elastic/multi_version_instance_proxy.rb

@@ -12,6 +12,8 @@ module Elastic
       generate_forwarding
     end
 
+    private
+
     def proxy_class_name
       "#{@data_class.name}InstanceProxy"
     end

ee/spec/lib/elastic/multi_version_class_proxy_spec.rb

@@ -12,6 +12,20 @@ describe Elastic::MultiVersionClassProxy do
       expect(result).to be_a(Elastic::V12p1::SnippetClassProxy)
       expect(result.target).to eq(ProjectSnippet)
     end
+
+    context 'repository' do
+      it 'returns class proxy in specified version' do
+        repository_proxy = described_class.new(Repository)
+        repository_result = repository_proxy.version('V12p1')
+        wiki_proxy = described_class.new(ProjectWiki)
+        wiki_result = wiki_proxy.version('V12p1')
+
+        expect(repository_result).to be_a(Elastic::V12p1::RepositoryClassProxy)
+        expect(repository_result.target).to eq(Repository)
+        expect(wiki_result).to be_a(Elastic::V12p1::ProjectWikiClassProxy)
+        expect(wiki_result.target).to eq(ProjectWiki)
+      end
+    end
   end
 
   describe 'method forwarding' do

ee/spec/lib/elastic/multi_version_instance_proxy_spec.rb

@@ -14,6 +14,24 @@ describe Elastic::MultiVersionInstanceProxy do
       expect(result).to be_a(Elastic::V12p1::SnippetInstanceProxy)
       expect(result.target).to eq(snippet)
     end
+
+    context 'repository' do
+      let(:project) { create(:project, :repository) }
+      let(:repository) { project.repository }
+      let(:wiki) { project.wiki }
+
+      it 'returns instance proxy in specified version' do
+        repository_proxy = described_class.new(repository)
+        repository_result = repository_proxy.version('V12p1')
+        wiki_proxy = described_class.new(wiki)
+        wiki_result = wiki_proxy.version('V12p1')
+
+        expect(repository_result).to be_a(Elastic::V12p1::RepositoryInstanceProxy)
+        expect(repository_result.target).to eq(repository)
+        expect(wiki_result).to be_a(Elastic::V12p1::ProjectWikiInstanceProxy)
+        expect(wiki_result.target).to eq(wiki)
+      end
+    end
   end
 
   describe 'method forwarding' do