Correctly encode string params for Gitaly's TreeEntries RPC

lib/gitlab/gitaly_client/commit_service.rb

@@ -80,8 +80,8 @@ module Gitlab
       def tree_entries(repository, revision, path)
         request = Gitaly::GetTreeEntriesRequest.new(
           repository: @gitaly_repo,
-          revision: revision,
-          path: path.presence || '.'
+          revision: GitalyClient.encode(revision),
+          path: path.present? ? GitalyClient.encode(path) : '.'
         )
 
         response = GitalyClient.call(@repository.storage, :commit_service, :get_tree_entries, request)

spec/lib/gitlab/gitaly_client/commit_service_spec.rb

@@ -111,6 +111,20 @@ describe Gitlab::GitalyClient::CommitService do
 
       client.tree_entries(repository, revision, path)
     end
+
+    context 'with UTF-8 params strings' do
+      let(:revision) { "branch\u011F" }
+      let(:path) { "foo/\u011F.txt" }
+
+      it 'handles string encodings correctly' do
+        expect_any_instance_of(Gitaly::CommitService::Stub)
+          .to receive(:get_tree_entries)
+          .with(gitaly_request_with_path(storage_name, relative_path), kind_of(Hash))
+          .and_return([])
+
+        client.tree_entries(repository, revision, path)
+      end
+    end
   end
 
   describe '#find_commit' do