Added Api::Utils.resource_search_by_href_slug helper method

lib/api/utils.rb

@@ -5,5 +5,15 @@ def self.build_href_slug(klass, id)
       collection = Api::CollectionConfig.new.name_for_subclass(klass)
       "#{collection}/#{id}" if collection
     end
+
+    def self.resource_search_by_href_slug(href_slug)
+      return unless href_slug
+      collection, id = href_slug.split('/')
+      collection_config = Api::CollectionConfig.new if collection
+      raise _("Invalid href_slug #{href_slug} specified") unless collection && id && collection_config.collection?(collection)
+
+      klass = collection_config.klass(collection)
+      Rbac.filtered_object(klass.find(id), :user => User.current_user, :class => klass)
+    end
   end
 end

spec/lib/api/utils_spec.rb

@@ -0,0 +1,63 @@
+RSpec.describe Api::Utils do
+  describe ".resource_search_by_href_slug" do
+    before { allow(User).to receive_messages(:server_timezone => "UTC") }
+
+    it "returns nil when nil is specified" do
+      actual = described_class.resource_search_by_href_slug(nil)
+
+      expect(actual).to be_nil
+    end
+
+    it "raises an exception with missing id" do
+      expect { described_class.resource_search_by_href_slug("vms/") }
+        .to raise_error("Invalid href_slug vms/ specified")
+    end
+
+    it "raises an exception with missing collection" do
+      expect { described_class.resource_search_by_href_slug("/10") }
+        .to raise_error("Invalid href_slug /10 specified")
+    end
+
+    it "raises an exception with missing delimited" do
+      expect { described_class.resource_search_by_href_slug("vms") }
+        .to raise_error("Invalid href_slug vms specified")
+    end
+
+    it "raises an exception with a bogus href_slug" do
+      expect { described_class.resource_search_by_href_slug("bogus/123") }
+        .to raise_error("Invalid href_slug bogus/123 specified")
+    end
+
+    it "raises an exception with a non primary collection href_slug" do
+      expect { described_class.resource_search_by_href_slug("auth/123") }
+        .to raise_error("Invalid href_slug auth/123 specified")
+    end
+
+    it "raises an ActiveRecord::RecordNotFound with a non-existent href_slug" do
+      expect { described_class.resource_search_by_href_slug("vms/99999") }
+        .to raise_error(ActiveRecord::RecordNotFound)
+    end
+
+    it "returns the resource with a valid href_slug" do
+      vm = FactoryGirl.create(:vm_vmware)
+
+      actual = described_class.resource_search_by_href_slug("vms/#{vm.id}")
+
+      expect(actual).to eq(vm)
+    end
+
+    it "does not return the resource when Rbac fails" do
+      owner_tenant  = FactoryGirl.create(:tenant)
+
+      unauth_tenant = FactoryGirl.create(:tenant)
+      unauth_group  = FactoryGirl.create(:miq_group, :tenant => unauth_tenant)
+
+      vm = FactoryGirl.create(:vm_vmware, :tenant => owner_tenant)
+      User.current_user = FactoryGirl.create(:user, :miq_groups => [unauth_group])
+
+      actual = described_class.resource_search_by_href_slug("vms/#{vm.id}")
+
+      expect(actual).to eq(nil)
+    end
+  end
+end