Commit bbcc51b

@@ -1,10 +1,12 @@
 # frozen_string_literal: true
+require 'active_model'
 
 module Scim
   module Kit
     module V2
       # Represents a SCIM Resource
       class Resource
+        include ::ActiveModel::Validations
         include Attributable
         include Templatable
 
@@ -12,6 +14,9 @@ module Scim
         attr_reader :meta
         attr_reader :schemas
 
+        validates_presence_of :id
+        validate :schema_validations
+
         def initialize(schemas:, location:)
           @meta = Meta.new(schemas[0].name, location)
           @schemas = schemas
@@ -19,6 +24,22 @@ module Scim
             define_attributes_for(schema.attributes)
           end
         end
+
+        private
+
+        def schema_validations
+          schemas.each do |schema|
+            schema.attributes.each do |type|
+              validate_attribute(type)
+            end
+          end
+        end
+
+        def validate_attribute(type)
+          attribute = read_attribute(type.name)
+
+          errors.add(type.name, "is required") if type.required && attribute.nil?
+        end
       end
     end
   end

@@ -116,4 +116,32 @@ RSpec.describe Scim::Kit::V2::Resource do
     specify { expect(subject.department).to eql('voltron') }
     specify { expect(subject.as_json[extension_id][:department]).to eql('voltron') }
   end
+
+  describe "#valid?" do
+    context "when invalid" do
+      before { subject.valid? }
+
+      specify { expect(subject).not_to be_valid }
+      specify { expect(subject.errors[:id]).to be_present }
+    end
+
+    context "when valid" do
+      before { subject.id = SecureRandom.uuid }
+
+      specify { expect(subject).to be_valid }
+    end
+
+    context "when a required attribute is blank" do
+      before do
+        schema.add_attribute(name: 'userName') do |x|
+          x.required = true
+        end
+        subject.id = SecureRandom.uuid
+        subject.valid?
+      end
+
+      specify { expect(subject).not_to be_valid }
+      specify { expect(subject.errors[:user_name]).to be_present }
+    end
+  end
 end

@@ -28,6 +28,7 @@ Gem::Specification.new do |spec|
   end
   spec.require_paths = ['lib']
 
+  spec.add_dependency 'activemodel', '>= 5.2.0'
   spec.add_dependency 'tilt', '~> 2.0'
   spec.add_dependency 'tilt-jbuilder', '~> 0.7'
   spec.add_development_dependency 'bundler', '~> 1.17'