1 files changed, 42 insertions, 0 deletions
diff --git a/spec/models/integrations/base_third_party_wiki_spec.rb b/spec/models/integrations/base_third_party_wiki_spec.rb
new file mode 100644
index 00000000000..11e044c2a18
--- /dev/null
+++ b/spec/models/integrations/base_third_party_wiki_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Integrations::BaseThirdPartyWiki do
+  describe 'Validations' do
+    let_it_be_with_reload(:project) { create(:project) }
+
+    describe 'only one third party wiki per project' do
+      subject(:integration) { create(:shimo_integration, project: project, active: true) }
+
+      before_all do
+        create(:confluence_integration, project: project, active: true)
+      end
+
+      context 'when integration is changed manually by user' do
+        it 'executes the validation' do
+          valid = integration.valid?(:manual_change)
+
+          expect(valid).to be_falsey
+          error_message = 'Another third-party wiki is already in use. '\
+                          'Only one third-party wiki integration can be active at a time'
+          expect(integration.errors[:base]).to include _(error_message)
+        end
+      end
+
+      context 'when integration is changed internally' do
+        it 'does not execute the validation' do
+          expect(integration.valid?).to be_truthy
+        end
+      end
+
+      context 'when integration is not on the project level' do
+        subject(:integration) { create(:shimo_integration, :instance, active: true) }
+
+        it 'executes the validation' do
+          expect(integration.valid?(:manual_change)).to be_truthy
+        end
+      end
+    end
+  end
+end