Merge branch 'task/system-err-junit' into 'master'

Use `system-err` if no failure/error message was given in JUnit output

See merge request gitlab-org/gitlab!80722

lib/gitlab/ci/parsers/test/junit.rb

@@ -64,11 +64,11 @@ module Gitlab
           def create_test_case(data, test_suite, job)
             if data.key?('failure')
               status = ::Gitlab::Ci::Reports::TestCase::STATUS_FAILED
-              system_output = data['failure']
+              system_output = data['failure'] || data['system_err']
               attachment = attachment_path(data['system_out'])
             elsif data.key?('error')
               status = ::Gitlab::Ci::Reports::TestCase::STATUS_ERROR
-              system_output = data['error']
+              system_output = data['error'] || data['system_err']
               attachment = attachment_path(data['system_out'])
             elsif data.key?('skipped')
               status = ::Gitlab::Ci::Reports::TestCase::STATUS_SKIPPED

spec/lib/gitlab/ci/parsers/test/junit_spec.rb

@@ -99,6 +99,19 @@ RSpec.describe Gitlab::Ci::Parsers::Test::Junit do
             'Some failure'
         end
 
+        context 'and has failure with no message but has system-err' do
+          let(:testcase_content) do
+            <<-EOF.strip_heredoc
+              <failure></failure>
+              <system-err>Some failure</system-err>
+            EOF
+          end
+
+          it_behaves_like '<testcase> XML parser',
+            ::Gitlab::Ci::Reports::TestCase::STATUS_FAILED,
+            'Some failure'
+        end
+
         context 'and has error' do
           let(:testcase_content) { '<error>Some error</error>' }
 
@@ -107,6 +120,19 @@ RSpec.describe Gitlab::Ci::Parsers::Test::Junit do
             'Some error'
         end
 
+        context 'and has error with no message but has system-err' do
+          let(:testcase_content) do
+            <<-EOF.strip_heredoc
+              <error></error>
+              <system-err>Some error</system-err>
+            EOF
+          end
+
+          it_behaves_like '<testcase> XML parser',
+            ::Gitlab::Ci::Reports::TestCase::STATUS_ERROR,
+            'Some error'
+        end
+
         context 'and has skipped' do
           let(:testcase_content) { '<skipped/>' }