refactor(regions): champ regions to use simple select

spec/models/champs/region_champ_spec.rb

@@ -0,0 +1,56 @@
+describe Champs::RegionChamp, type: :model do
+  let(:memory_store) { ActiveSupport::Cache.lookup_store(:memory_store) }
+
+  before do
+    allow(Rails).to receive(:cache).and_return(memory_store)
+    Rails.cache.clear
+  end
+
+  let(:champ) { described_class.new }
+
+  describe 'value', vcr: { cassette_name: 'api_geo_regions' } do
+    it 'with code' do
+      champ.value = '01'
+      expect(champ.external_id).to eq('01')
+      expect(champ.value).to eq('Guadeloupe')
+      expect(champ.selected).to eq('01')
+      expect(champ.to_s).to eq('Guadeloupe')
+    end
+
+    it 'with nil' do
+      champ.write_attribute(:value, 'Guadeloupe')
+      champ.write_attribute(:external_id, '01')
+      champ.value = nil
+      expect(champ.external_id).to be_nil
+      expect(champ.value).to be_nil
+      expect(champ.selected).to be_nil
+      expect(champ.to_s).to eq('')
+    end
+
+    it 'with blank' do
+      champ.write_attribute(:value, 'Guadeloupe')
+      champ.write_attribute(:external_id, '01')
+      champ.value = ''
+      expect(champ.external_id).to be_nil
+      expect(champ.value).to be_nil
+      expect(champ.selected).to be_nil
+      expect(champ.to_s).to eq('')
+    end
+
+    it 'with initial nil' do
+      champ.write_attribute(:value, nil)
+      expect(champ.external_id).to be_nil
+      expect(champ.value).to be_nil
+      expect(champ.selected).to be_nil
+      expect(champ.to_s).to eq('')
+    end
+
+    it 'with initial name' do
+      champ.write_attribute(:value, 'Guadeloupe')
+      expect(champ.external_id).to be_nil
+      expect(champ.value).to eq('Guadeloupe')
+      expect(champ.selected).to eq('01')
+      expect(champ.to_s).to eq('Guadeloupe')
+    end
+  end
+end