1 files changed, 31 insertions, 1 deletions
diff --git a/spec/lib/banzai/filter/references/external_issue_reference_filter_spec.rb b/spec/lib/banzai/filter/references/external_issue_reference_filter_spec.rb
index 79500f43394..86fb7d3964d 100644
--- a/spec/lib/banzai/filter/references/external_issue_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/references/external_issue_reference_filter_spec.rb
@@ -223,7 +223,7 @@ RSpec.describe Banzai::Filter::References::ExternalIssueReferenceFilter, feature
   end
 
   context "jira project" do
-    let_it_be(:service) { create(:jira_integration, project: project) }
+    let_it_be_with_reload(:service) { create(:jira_integration, project: project) }
 
     let(:reference) { issue.to_reference }
 
@@ -250,6 +250,36 @@ RSpec.describe Banzai::Filter::References::ExternalIssueReferenceFilter, feature
         expect(filter(act).to_html).to eq exp
       end
     end
+
+    context 'with a custom regex' do
+      before do
+        service.jira_tracker_data.update!(jira_issue_regex: '[JIRA]{2,}-\\d+')
+      end
+
+      context "with right markdown" do
+        let(:issue) { ExternalIssue.new("JIRA-123", project) }
+
+        it_behaves_like "external issue tracker"
+      end
+
+      context "with a single-letter prefix" do
+        let(:issue) { ExternalIssue.new("J-123", project) }
+
+        it "ignores reference" do
+          exp = act = "Issue #{reference}"
+          expect(filter(act).to_html).to eq exp
+        end
+      end
+
+      context "with wrong markdown" do
+        let(:issue) { ExternalIssue.new("#123", project) }
+
+        it "ignores reference" do
+          exp = act = "Issue #{reference}"
+          expect(filter(act).to_html).to eq exp
+        end
+      end
+    end
   end
 
   context "ewm project" do