Encode revision for gitattributes ref

A field didn't call the needed encoding helper, thus some UTF-8 encoding
couldn't be encoded to ASCII. Using the helper method this was fixed.

Tests are now run against Gitaly and Rugged too, to ensure both remain
working correctly.

Fixes gitlab-org/gitaly#1032, gitlab-org/gitlab-ce#43278

changelogs/unreleased/zj-gitaly-encoding-issue.yml

+---
+title: Encode branch name as binary before creating a RPC request to copy attributes
+merge_request: 17291
+author:
+type: fixed

lib/gitlab/gitaly_client/repository_service.rb

@@ -41,7 +41,7 @@ module Gitlab
       end
 
       def apply_gitattributes(revision)
-        request = Gitaly::ApplyGitattributesRequest.new(repository: @gitaly_repo, revision: revision)
+        request = Gitaly::ApplyGitattributesRequest.new(repository: @gitaly_repo, revision: encode_binary(revision))
         GitalyClient.call(@storage, :repository_service, :apply_gitattributes, request)
       end
 

spec/lib/gitlab/git/repository_spec.rb

@@ -1406,12 +1406,35 @@ describe Gitlab::Git::Repository, seed_helper: true do
   end
 
   describe "#copy_gitattributes" do
+    shared_examples 'applying git attributes' do
       let(:attributes_path) { File.join(SEED_STORAGE_PATH, TEST_REPO_PATH, 'info/attributes') }
 
+      after do
+        FileUtils.rm_rf(attributes_path) if Dir.exist?(attributes_path)
+      end
+
       it "raises an error with invalid ref" do
         expect { repository.copy_gitattributes("invalid") }.to raise_error(Gitlab::Git::Repository::InvalidRef)
       end
 
+      context 'when forcing encoding issues' do
+        let(:branch_name) { "ʕ•ᴥ•ʔ" }
+
+        before do
+          repository.create_branch(branch_name, "master")
+        end
+
+        after do
+          repository.rm_branch(branch_name, user: build(:admin))
+        end
+
+        it "doesn't raise with a valid unicode ref" do
+          expect { repository.copy_gitattributes(branch_name) }.not_to raise_error
+
+          repository
+        end
+      end
+
       context "with no .gitattrbutes" do
         before do
           repository.copy_gitattributes("master")
@@ -1420,10 +1443,6 @@ describe Gitlab::Git::Repository, seed_helper: true do
         it "does not have an info/attributes" do
           expect(File.exist?(attributes_path)).to be_falsey
         end
-
-      after do
-        FileUtils.rm_rf(attributes_path)
-      end
       end
 
       context "with .gitattrbutes" do
@@ -1439,10 +1458,6 @@ describe Gitlab::Git::Repository, seed_helper: true do
           contents = File.open(attributes_path, "rb") { |f| f.read }
           expect(contents).to eq("*.md binary\n")
         end
-
-      after do
-        FileUtils.rm_rf(attributes_path)
-      end
       end
 
       context "with updated .gitattrbutes" do
@@ -1459,10 +1474,6 @@ describe Gitlab::Git::Repository, seed_helper: true do
           contents = File.read(attributes_path)
           expect(contents).to eq("*.txt binary\n")
         end
-
-      after do
-        FileUtils.rm_rf(attributes_path)
-      end
       end
 
       context "with no .gitattrbutes in HEAD but with previous info/attributes" do
@@ -1474,10 +1485,15 @@ describe Gitlab::Git::Repository, seed_helper: true do
         it "does not have an info/attributes" do
           expect(File.exist?(attributes_path)).to be_falsey
         end
+      end
+    end
 
-      after do
-        FileUtils.rm_rf(attributes_path)
+    context 'when gitaly is enabled' do
+      it_behaves_like 'applying git attributes'
     end
+
+    context 'when gitaly is disabled', :disable_gitaly do
+      it_behaves_like 'applying git attributes'
     end
   end