Use existing BUNDLE_PATH for gitaly in local tests

lib/tasks/gitlab/gitaly.rake

@@ -15,13 +15,17 @@ namespace :gitlab do
       checkout_or_clone_version(version: version, repo: args.repo, target_dir: args.dir)
 
       _, status = Gitlab::Popen.popen(%w[which gmake])
-      command = status.zero? ? 'gmake' : 'make'
+      command = status.zero? ? ['gmake'] : ['make']
+
+      if Rails.env.test?
+        command += %W[BUNDLE_PATH=#{Bundler.bundle_path}] 
+      end
 
       Dir.chdir(args.dir) do
         create_gitaly_configuration
         # In CI we run scripts/gitaly-test-build instead of this command
         unless ENV['CI'].present?
-          Bundler.with_original_env { run_command!(%w[/usr/bin/env -u RUBYOPT -u BUNDLE_GEMFILE] + [command]) }
+          Bundler.with_original_env { run_command!(%w[/usr/bin/env -u RUBYOPT -u BUNDLE_GEMFILE] + command) }
         end
       end
     end

spec/tasks/gitlab/gitaly_rake_spec.rb

@@ -54,17 +54,17 @@ describe 'gitlab:gitaly namespace rake task' do
       before do
         FileUtils.mkdir_p(clone_path)
         expect(Dir).to receive(:chdir).with(clone_path).and_call_original
+        allow(Bundler).to receive(:bundle_path).and_return('/fake/bundle_path')
       end
 
       context 'gmake is available' do
         before do
           expect(main_object).to receive(:checkout_or_clone_version)
-          allow(main_object).to receive(:run_command!).with(command_preamble + ['gmake']).and_return(true)
         end
 
         it 'calls gmake in the gitaly directory' do
           expect(Gitlab::Popen).to receive(:popen).with(%w[which gmake]).and_return(['/usr/bin/gmake', 0])
-          expect(main_object).to receive(:run_command!).with(command_preamble + ['gmake']).and_return(true)
+          expect(main_object).to receive(:run_command!).with(command_preamble + %w[gmake BUNDLE_PATH=/fake/bundle_path]).and_return(true)
 
           run_rake_task('gitlab:gitaly:install', clone_path)
         end
@@ -73,11 +73,21 @@ describe 'gitlab:gitaly namespace rake task' do
       context 'gmake is not available' do
         before do
           expect(main_object).to receive(:checkout_or_clone_version)
-          allow(main_object).to receive(:run_command!).with(command_preamble + ['make']).and_return(true)
+          expect(Gitlab::Popen).to receive(:popen).with(%w[which gmake]).and_return(['', 42])
         end
 
         it 'calls make in the gitaly directory' do
-          expect(Gitlab::Popen).to receive(:popen).with(%w[which gmake]).and_return(['', 42])
+          expect(main_object).to receive(:run_command!).with(command_preamble + %w[make BUNDLE_PATH=/fake/bundle_path]).and_return(true)
+
+          run_rake_task('gitlab:gitaly:install', clone_path)
+        end
+
+        context 'when Rails.env is not "test"' do
+          before do
+            allow(Rails.env).to receive(:test?).and_return(false)
+          end
+
+          it 'calls make in the gitaly directory without BUNDLE_PATH' do
             expect(main_object).to receive(:run_command!).with(command_preamble + ['make']).and_return(true)
   
             run_rake_task('gitlab:gitaly:install', clone_path)
@@ -85,6 +95,7 @@ describe 'gitlab:gitaly namespace rake task' do
         end
       end
     end
+  end
 
   describe 'storage_config' do
     it 'prints storage configuration in a TOML format' do