Merge branch 'api-fix-files' into 'master'

API: Fix file downloading

See merge request !8953

changelogs/unreleased/api-fix-files.yml

+---
+title: 'API: Fix file downloading'
+merge_request: Robert Schilling
+author: 8267

lib/api/helpers.rb

@@ -304,7 +304,7 @@ module API
         header['X-Sendfile'] = path
         body
       else
-        path
+        file path
       end
     end
 

spec/requests/api/builds_spec.rb

@@ -188,6 +188,7 @@ describe API::Builds, api: true do
         it 'returns specific job artifacts' do
           expect(response).to have_http_status(200)
           expect(response.headers).to include(download_headers)
+          expect(response.body).to match_file(build.artifacts_file.file.file)
         end
       end
 

spec/support/matchers/match_file.rb

+RSpec::Matchers.define :match_file do |expected|
+  match do |actual|
+    expect(Digest::MD5.hexdigest(actual)).to eq(Digest::MD5.hexdigest(File.read(expected)))
+  end
+end