Handle trailing slashes when generating Jira URLs

Applies to issues_url and new_issue_url

app/models/project_services/jira_service.rb

@@ -54,7 +54,7 @@ class JiraService < IssueTrackerService
       username: self.username,
       password: self.password,
       site: URI.join(url, '/').to_s, # Intended to find the root
-      context_path: url.path.chomp('/'),
+      context_path: url.path,
       auth_type: :basic,
       read_timeout: 120,
       use_cookies: true,
@@ -103,6 +103,12 @@ class JiraService < IssueTrackerService
     "#{url}/secure/CreateIssue.jspa"
   end
 
+  alias_method :original_url, :url
+
+  def url
+    original_url&.chomp('/')
+  end
+
   def execute(push)
     # This method is a no-op, because currently JiraService does not
     # support any events.

changelogs/unreleased/63833-fix-jira-issues-url.yml

+---
+title: Handle trailing slashes when generating Jira issue URLs
+merge_request: 30911
+author:
+type: fixed

spec/models/project_services/jira_service_spec.rb

@@ -236,7 +236,7 @@ describe JiraService do
         allow(JIRA::Resource::Remotelink).to receive(:all).and_return(nil)
 
         expect { @jira_service.close_issue(resource, ExternalIssue.new('JIRA-123', project)) }
-            .not_to raise_error(NoMethodError)
+            .not_to raise_error
       end
 
       # Check https://developer.atlassian.com/jiradev/jira-platform/guides/other/guide-jira-remote-issue-links/fields-in-remote-issue-links
@@ -606,6 +606,12 @@ describe JiraService do
         expect(service.properties['api_url']).to eq('http://jira.sample/api')
       end
     end
+
+    it 'removes trailing slashes from url' do
+      service = described_class.new(url: 'http://jira.test.com/path/')
+
+      expect(service.url).to eq('http://jira.test.com/path')
+    end
   end
 
   describe 'favicon urls', :request_store do
@@ -621,4 +627,20 @@ describe JiraService do
       expect(props[:object][:icon][:url16x16]).to match %r{^http://localhost/uploads/-/system/appearance/favicon/\d+/dk.png$}
     end
   end
+
+  context 'generating external URLs' do
+    let(:service) { described_class.new(url: 'http://jira.test.com/path/') }
+
+    describe '#issues_url' do
+      it 'handles trailing slashes' do
+        expect(service.issues_url).to eq('http://jira.test.com/path/browse/:id')
+      end
+    end
+
+    describe '#new_issue_url' do
+      it 'handles trailing slashes' do
+        expect(service.new_issue_url).to eq('http://jira.test.com/path/secure/CreateIssue.jspa')
+      end
+    end
+  end
 end