Added test

src/lib/registration/registration.rb

@@ -130,13 +130,15 @@ def update_system(target_distro = nil)
       ret
     end
 
+    # Get the list of addons
+    # @return [Array<Addon>] List of addons, empty if no base product is found
     def get_addon_list
       # extensions for base product
       base_product = ::Registration::SwMgmt.base_product_to_register
 
       if !base_product
         log.warn "No base product, skipping addons"
-        return
+        return []
       end
 
       log.info "Reading available addons for product: #{base_product["name"]}"

test/registration_spec.rb

@@ -127,15 +127,19 @@
       }
     end
     before do
-      expect(Registration::SwMgmt).to receive(:base_product_to_register).and_return(base_product)
-    end
-
-    it "downloads available extensions" do
       remote_product = load_yaml_fixture("remote_product.yml")
-      expect(SUSE::Connect::YaST).to receive(:show_product).and_return(remote_product)
+      allow(SUSE::Connect::YaST).to receive(:show_product).and_return(remote_product)
       # no product renames defined
-      expect(Registration::SwMgmt).to receive(:update_product_renames).with({})
+      allow(Registration::SwMgmt).to receive(:update_product_renames).with({})
+    end
 
+    it "returns empty list if no base product is found" do
+      expect(Registration::SwMgmt).to receive(:base_product_to_register).and_return(nil)
+      expect(Registration::Registration.new.get_addon_list).to eq([])
+    end
+
+    it "downloads available extensions" do
+      expect(Registration::SwMgmt).to receive(:base_product_to_register).and_return(base_product)
       addons = Registration::Registration.new.get_addon_list
 
       # HA-GEO is extension for HA so it's not included in the list