Check methods are called instead of stubing them

spec/models/service_spec.rb

@@ -893,16 +893,28 @@ RSpec.describe Service do
   end
 
   describe '.available_services_names' do
-    before do
-      allow(described_class).to receive(:services_names).and_return(%w[prometheus pushover teamcity])
-      allow(described_class).to receive(:dev_services_names).and_return(%w[asana])
-      allow(described_class).to receive(:project_specific_services_names).and_return(%w[assembla])
+    it 'calls the right methods' do
+      expect(described_class).to receive(:services_names).and_call_original
+      expect(described_class).to receive(:dev_services_names).and_call_original
+      expect(described_class).to receive(:project_specific_services_names).and_call_original
+
+      described_class.available_services_names
     end
 
-    it 'returns the available services names depending on the filters', :aggregate_failures do
-      expect(described_class.available_services_names).to eq(%w[asana assembla prometheus pushover teamcity])
-      expect(described_class.available_services_names(include_project_specific: false)).to eq(%w[asana prometheus pushover teamcity])
-      expect(described_class.available_services_names(include_dev: false)).to eq(%w[assembla prometheus pushover teamcity])
+    it 'does not call project_specific_services_names with include_project_specific false' do
+      expect(described_class).to receive(:services_names).and_call_original
+      expect(described_class).to receive(:dev_services_names).and_call_original
+      expect(described_class).not_to receive(:project_specific_services_names)
+
+      described_class.available_services_names(include_project_specific: false)
+    end
+
+    it 'does not call dev_services_names with include_dev false' do
+      expect(described_class).to receive(:services_names).and_call_original
+      expect(described_class).not_to receive(:dev_services_names)
+      expect(described_class).to receive(:project_specific_services_names).and_call_original
+
+      described_class.available_services_names(include_dev: false)
     end
   end
 end