diff --git a/devops-service/spec/executors/server_executor_spec.rb b/devops-service/spec/executors/server_executor_spec.rb
new file mode 100644
index 0000000..6202f1f
--- /dev/null
+++ b/devops-service/spec/executors/server_executor_spec.rb
@@ -0,0 +1,50 @@
+require 'lib/executors/server_executor'
+
+RSpec.describe Devops::Executor::ServerExecutor, type: :executor, stubbed_connector: true do
+  let(:project) { build(:project) }
+  let(:deploy_env) { project.deploy_env('foo') }
+  let(:server) { build(:server, project: project.id, deploy_env: 'foo') }
+  let(:executor) { described_class.new(server, '') }
+
+  before do
+    allow(stubbed_connector).to receive(:project) { project }
+  end
+
+  describe '#initialize' do
+
+    it 'sets server, project, deploy_env, out instance variables' do
+      expect(executor).to have_instance_variable_value(:server, server)
+      expect(executor).to have_instance_variable_value(:project, project)
+      expect(executor).to have_instance_variable_value(:deploy_env, deploy_env)
+      expect(executor).to have_instance_variable_value(:out, '')
+    end
+
+    it 'set knife_instance instance variable' do
+      allow(KnifeFactory).to receive(:instance)
+      expect(executor).to be_instance_variable_defined(:@knife_instance)
+    end
+
+    it 'defines :flush method on @out if it is absent' do
+      out = Class.new.new
+      expect(out).not_to respond_to(:flush)
+      described_class.new(server, out)
+      expect(out).to respond_to(:flush)
+    end
+
+    it 'sets current_user from options' do
+      user = double
+      executor = described_class.new(server, '', {current_user: user})
+      expect(executor).to have_instance_variable_value(:current_user, user)
+    end
+  end
+
+  describe '#create_server_object' do
+    it 'builds Server object' do
+      server = executor.create_server_object('created_by' => 'me')
+      expect(server).to be_a(Devops::Model::Server)
+      expect(server.project).to eq 'my_project'
+      expect(server.deploy_env).to eq 'foo'
+      expect(server.created_by).to eq 'me'
+    end
+  end
+end
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diff --git a/devops-service/spec/support/instance_variable_matcher.rb b/devops-service/spec/support/instance_variable_matcher.rb
new file mode 100644
index 0000000..51f5097
--- /dev/null
+++ b/devops-service/spec/support/instance_variable_matcher.rb
@@ -0,0 +1,6 @@
+RSpec::Matchers.define :have_instance_variable_value do |name, value|
+  match do |actual|
+    actual.instance_variable_defined?("@#{name}") &&
+      actual.instance_variable_get("@#{name}") == value
+  end
+end
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