Store application wide terms

This allows admins to define terms in the application settings.

Every time the terms are adjusted, a new version is stored and becomes
the 'active' version. This allows tracking which specific version was
accepted by a user.

1 files changed, 57 insertions, 0 deletions

diff --git a/spec/services/application_settings/update_service_spec.rb b/spec/services/application_settings/update_service_spec.rb
new file mode 100644
index 00000000000..fb07ecc6ae8
--- /dev/null
+++ b/spec/services/application_settings/update_service_spec.rb
@@ -0,0 +1,57 @@
+require 'spec_helper'
+
+describe ApplicationSettings::UpdateService do
+  let(:application_settings) { Gitlab::CurrentSettings.current_application_settings }
+  let(:admin) { create(:user, :admin) }
+  let(:params) { {} }
+
+  subject { described_class.new(application_settings, admin, params) }
+
+  before do
+    # So the caching behaves like it would in production
+    stub_env('IN_MEMORY_APPLICATION_SETTINGS', 'false')
+  end
+
+  describe 'updating terms' do
+    context 'when the passed terms are blank' do
+      let(:params) { { terms: ''  } }
+
+      it 'does not create terms' do
+        expect { subject.execute }.not_to change { ApplicationSetting::Term.count }
+      end
+    end
+
+    context 'when passing terms' do
+      let(:params) { { terms: 'Be nice!  '  } }
+
+      it 'creates the terms' do
+        expect { subject.execute }.to change { ApplicationSetting::Term.count }.by(1)
+      end
+
+      it 'does not create terms if they are the same as the existing ones' do
+        create(:term, terms: 'Be nice!')
+
+        expect { subject.execute }.not_to change { ApplicationSetting::Term.count }
+      end
+
+      it 'updates terms if they already existed' do
+        create(:term, terms: 'Other terms')
+
+        subject.execute
+
+        expect(application_settings.terms).to eq('Be nice!')
+      end
+
+      it 'Only queries once when the terms are changed' do
+        create(:term, terms: 'Other terms')
+        expect(application_settings.terms).to eq('Other terms')
+
+        subject.execute
+
+        expect(application_settings.terms).to eq('Be nice!')
+        expect { 2.times { application_settings.terms } }
+          .not_to exceed_query_limit(0)
+      end
+    end
+  end
+end