1 files changed, 70 insertions, 0 deletions
diff --git a/spec/features/canonical_link_spec.rb b/spec/features/canonical_link_spec.rb
new file mode 100644
index 00000000000..8b64e9a5b9d
--- /dev/null
+++ b/spec/features/canonical_link_spec.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Canonical link' do
+  include Spec::Support::Helpers::Features::CanonicalLinkHelpers
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project, :public, namespace: user.namespace) }
+  let_it_be(:issue) { create(:issue, project: project) }
+
+  let_it_be(:issue_request) { issue_url(issue) }
+  let_it_be(:project_request) { project_url(project) }
+
+  before do
+    sign_in(user)
+  end
+
+  shared_examples 'shows canonical link' do
+    specify do
+      visit request_url
+
+      expect(page).to have_canonical_link(expected_url)
+    end
+  end
+
+  shared_examples 'does not show canonical link' do
+    specify do
+      visit request_url
+
+      expect(page).not_to have_any_canonical_links
+    end
+  end
+
+  it_behaves_like 'does not show canonical link' do
+    let(:request_url) { issue_request }
+  end
+
+  it_behaves_like 'shows canonical link' do
+    let(:request_url) { issue_request + '/' }
+    let(:expected_url) { issue_request }
+  end
+
+  it_behaves_like 'shows canonical link' do
+    let(:request_url) { project_issues_url(project) + "/?state=opened" }
+    let(:expected_url) { project_issues_url(project, state: 'opened') }
+  end
+
+  it_behaves_like 'does not show canonical link' do
+    let(:request_url) { project_request }
+  end
+
+  it_behaves_like 'shows canonical link' do
+    let(:request_url) { project_request + '/' }
+    let(:expected_url) { project_request }
+  end
+
+  it_behaves_like 'shows canonical link' do
+    let(:query_params) { '?foo=bar' }
+    let(:request_url) { project_request + "/#{query_params}" }
+    let(:expected_url) { project_request + query_params }
+  end
+
+  # Hard-coded canonical links
+
+  it_behaves_like 'shows canonical link' do
+    let(:request_url) { explore_root_path }
+    let(:expected_url) { explore_projects_url }
+  end
+end