Add specs for ProductSerializer

spec/factories/products.rb

@@ -18,13 +18,15 @@
       base_products []
       predecessor nil
       root_product nil
+      recommended false
     end
 
     after :create do |product, evaluator|
       evaluator.base_products.each do |base_product|
         product.product_extensions_associations << ProductsExtensionsAssociation.create(
           product: base_product,
-          root_product: evaluator.root_product || base_product
+          root_product: evaluator.root_product || base_product,
+          recommended: evaluator.recommended
         )
       end
 

spec/serializers/v3/product_serializer_spec.rb

@@ -0,0 +1,55 @@
+require 'rails_helper'
+
+describe V3::ProductSerializer do
+  let(:sled15) { create(:product, name: 'SLED') }
+  let(:sles15) { create(:product, name: 'SLES') }
+  let!(:basesystem) do
+    create(:product, :extension, name: 'BASESYSTEM', base_products: [sles15, sled15], recommended: true)
+  end
+  let!(:server_applications) do
+    create(:product, :extension, name: 'SERVER APPLICATIONS', base_products: [basesystem], root_product: sles15)
+  end
+  let(:base_url) { 'http://example.com' }
+
+  describe 'SLES extension tree' do
+    subject(:serializer) { described_class.new(sles15, root_product: sles15, base_url: base_url) }
+
+    let(:top_extension) { serializer.as_json[:extensions].first }
+    let(:nested_extension) { top_extension[:extensions].first }
+
+    it 'has base system extension' do
+      expect(top_extension[:name]).to eq(basesystem.name)
+    end
+
+    it 'has base system and it is recommended' do
+      expect(top_extension[:recommended]).to eq(true)
+    end
+
+    it 'has server applications extension' do
+      expect(nested_extension[:name]).to eq(server_applications.name)
+    end
+
+    it 'has server applications extension and it is not recommended' do
+      expect(nested_extension[:recommended]).to eq(false)
+    end
+  end
+
+  describe 'SLED extension tree' do
+    subject(:serializer) { described_class.new(sled15, root_product: sled15, base_url: base_url) }
+
+    let(:top_extension) { serializer.as_json[:extensions].first }
+    let(:nested_extension) { top_extension[:extensions].first }
+
+    it 'has base system extension' do
+      expect(top_extension[:name]).to eq(basesystem.name)
+    end
+
+    it 'has base system and it is recommended' do
+      expect(top_extension[:recommended]).to eq(true)
+    end
+
+    it 'has no nested extensions' do
+      expect(nested_extension).to be_nil
+    end
+  end
+end