Spec ScopedSettings (#3559)

spec/support/examples/lib/settings/scoped_settings.rb

@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+shared_examples 'ScopedSettings' do
+  describe '[]' do
+    it 'inherits default settings' do
+      expect(Setting.boost_modal).to eq false
+      expect(Setting.interactions['must_be_follower']).to eq false
+
+      settings = create!
+
+      expect(settings['boost_modal']).to eq false
+      expect(settings['interactions']['must_be_follower']).to eq false
+    end
+  end
+
+  describe 'all_as_records' do
+    # expecting [] and []= works
+
+    it 'returns records merged with default values except hashes' do
+      expect(Setting.boost_modal).to eq false
+      expect(Setting.delete_modal).to eq true
+
+      settings = create!
+      settings['boost_modal'] = true
+
+      records = settings.all_as_records
+
+      expect(records['boost_modal'].value).to eq true
+      expect(records['delete_modal'].value).to eq true
+    end
+  end
+
+  describe 'missing methods' do
+    # expecting [] and []= works.
+
+    it 'reads settings' do
+      expect(Setting.boost_modal).to eq false
+      settings = create!
+      expect(settings.boost_modal).to eq false
+    end
+
+    it 'updates settings' do
+      settings = fabricate
+      settings.boost_modal = true
+      expect(settings['boost_modal']).to eq true
+    end
+  end
+
+  it 'can update settings with [] and can read with []=' do
+    settings = fabricate
+
+    settings['boost_modal'] = true
+    settings['interactions'] = settings['interactions'].merge('must_be_follower' => true)
+
+    Setting.save!
+
+    expect(settings['boost_modal']).to eq true
+    expect(settings['interactions']['must_be_follower']).to eq true
+
+    Rails.cache.clear
+
+    expect(settings['boost_modal']).to eq true
+    expect(settings['interactions']['must_be_follower']).to eq true
+  end
+
+  xit 'does not mutate defaults via the cache' do
+    fabricate['interactions']['must_be_follower'] = true
+    # TODO
+    # This mutates the global settings default such that future
+    # instances will inherit the incorrect starting values
+
+    expect(fabricate.settings['interactions']['must_be_follower']).to eq false
+  end
+end