diff --git a/devops-service/db/mongo/models/project.rb b/devops-service/db/mongo/models/project.rb
index c4edc04..0bb61ac 100644
--- a/devops-service/db/mongo/models/project.rb
+++ b/devops-service/db/mongo/models/project.rb
@@ -22,6 +22,7 @@ module Devops
       #define_hook :after_add_deploy_env
 
       attr_accessor :id, :deploy_envs, :type, :archived, :description, :run_list
+      attr_accessor :components
 
       MULTI_TYPE = "multi"
 
diff --git a/devops-service/db/mongo/models/stack_template/stack_template_ec2.rb b/devops-service/db/mongo/models/stack_template/stack_template_ec2.rb
index 89f7a0d..7a2636e 100644
--- a/devops-service/db/mongo/models/stack_template/stack_template_ec2.rb
+++ b/devops-service/db/mongo/models/stack_template/stack_template_ec2.rb
@@ -16,10 +16,6 @@ module Devops
         super.merge(template_url: template_url)
       end
 
-      def delete_template_file_from_storage
-        raise 'Implement me'
-      end
-
       class << self
 
         def create(attrs)
diff --git a/devops-service/spec/models/project_spec.rb b/devops-service/spec/models/project_spec.rb
index dd892b1..fdb8b50 100644
--- a/devops-service/spec/models/project_spec.rb
+++ b/devops-service/spec/models/project_spec.rb
@@ -23,6 +23,23 @@ RSpec.describe Devops::Model::Project, type: :model do
       project = build(:project, with_deploy_env_identifiers: ['foo', nil])
       expect(project).not_to be_valid
     end
+
+    describe 'components validation' do
+      it 'is valid with components with filenames' do
+        project.components = {'foo' => {'filename' => 'bar'}}
+        expect{project.validate_components}.not_to raise_error
+      end
+
+      it "isn't valid if components isn't a hash" do
+        project.components = []
+        expect{project.validate_components}.to raise_error InvalidRecord
+      end
+
+      it "raises InvalidRecord if one of componentsц hasn't filename" do
+        project.components = {'foo' => {}}
+        expect{project.validate_components}.to raise_error InvalidRecord
+      end
+    end
   end
 
   describe '.fields' do
diff --git a/devops-service/spec/models/user_spec.rb b/devops-service/spec/models/user_spec.rb
index c060ff4..ad9bc69 100644
--- a/devops-service/spec/models/user_spec.rb
+++ b/devops-service/spec/models/user_spec.rb
@@ -79,13 +79,25 @@ RSpec.describe Devops::Model::User, type: :model do
     end
   end
 
+  describe '.build_from_bson' do
+    it 'builds User model from given hash and assigns id' do
+      model = described_class.build_from_bson('_id' => 'foo', 'username' => 'not shown', 'email' => 'baz')
+      expect(model.id).to eq 'foo'
+      expect(model.email).to eq 'baz'
+    end
+  end
+
   describe '#check_privileges' do
     it "raises InvalidPrivileges if user hasn't specified privilege" do
       expect { user.check_privileges('key', 'w') }.to raise_error(InvalidPrivileges)
     end
 
     it 'does nothing is user has specified privilege' do
-      user.check_privileges('key', 'r')
+      expect{user.check_privileges('key', 'r')}.not_to raise_error
+    end
+
+    it 'raises InvalidPrivileges if given privelege is wrong' do
+      expect{user.check_privileges('key', 't')}.to raise_error InvalidPrivileges
     end
   end