Ensure `JIRA::Resource::Issue` responds to `resolution` before calling it

app/models/project_services/jira_service.rb

@@ -104,7 +104,7 @@ class JiraService < IssueTrackerService
   def close_issue(entity, external_issue)
     issue = jira_request { client.Issue.find(external_issue.iid) }
-    return if issue.nil? || issue.resolution.present? || !jira_issue_transition_id.present?
+    return if issue.nil? || has_resolution?(issue) || !jira_issue_transition_id.present?
     commit_id = if entity.is_a?(Commit)
                   entity.id
@@ -118,7 +118,7 @@ class JiraService < IssueTrackerService
     # may or may not be allowed. Refresh the issue after transition and check
     # if it is closed, so we don't have one comment for every commit.
     issue = jira_request { client.Issue.find(issue.key) } if transition_issue(issue)
-    add_issue_solved_comment(issue, commit_id, commit_url) if issue.resolution
+    add_issue_solved_comment(issue, commit_id, commit_url) if has_resolution?(issue)
   end
   def create_cross_reference_note(mentioned, noteable, author)
@@ -216,6 +216,10 @@ class JiraService < IssueTrackerService
     end
   end
+  def has_resolution?(issue)
+    issue.respond_to?(:resolution) && issue.resolution.present?
+  end
+
   def comment_exists?(issue, message)
     comments = jira_request { issue.comments }

spec/models/project_services/jira_service_spec.rb

@@ -153,6 +153,15 @@ describe JiraService do
       expect(WebMock).not_to have_requested(:post, @remote_link_url)
     end
+    it "does not send comment or remote links to issues with unknown resolution" do
+      allow_any_instance_of(JIRA::Resource::Issue).to receive(:respond_to?).with(:resolution).and_return(false)
+
+      @jira_service.close_issue(merge_request, ExternalIssue.new("JIRA-123", project))
+
+      expect(WebMock).not_to have_requested(:post, @comment_url)
+      expect(WebMock).not_to have_requested(:post, @remote_link_url)
+    end
+
     it "references the GitLab commit/merge request" do
       stub_config_setting(base_url: custom_base_url)