1 files changed, 38 insertions, 0 deletions
diff --git a/spec/support/shared_examples/requests/api/issuable_update_shared_examples.rb b/spec/support/shared_examples/requests/api/issuable_update_shared_examples.rb
new file mode 100644
index 00000000000..ded381fd402
--- /dev/null
+++ b/spec/support/shared_examples/requests/api/issuable_update_shared_examples.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+RSpec.shared_examples 'issuable update endpoint' do
+  let(:area) { entity.class.name.underscore.pluralize }
+
+  describe 'PUT /projects/:id/issues/:issue_id' do
+    let(:url) { "/projects/#{project.id}/#{area}/#{entity.iid}" }
+
+    it 'clears labels when labels param is nil' do
+      put api(url, user), params: { labels: 'label1' }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response['labels']).to contain_exactly('label1')
+
+      put api(url, user), params: { labels: nil }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      json_response = Gitlab::Json.parse(response.body)
+      expect(json_response['labels']).to be_empty
+    end
+
+    it 'updates the issuable with labels param as array' do
+      stub_const("Gitlab::QueryLimiting::Transaction::THRESHOLD", 110)
+
+      params = { labels: ['label1', 'label2', 'foo, bar', '&,?'] }
+
+      put api(url, user), params: params
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(json_response['labels']).to include 'label1'
+      expect(json_response['labels']).to include 'label2'
+      expect(json_response['labels']).to include 'foo'
+      expect(json_response['labels']).to include 'bar'
+      expect(json_response['labels']).to include '&'
+      expect(json_response['labels']).to include '?'
+    end
+  end
+end