diff --git a/.gitignore b/.gitignore
index 5c79730..0603611 100644
--- a/.gitignore
+++ b/.gitignore
@@ -68,3 +68,11 @@ target/
 # Direnv
 .envrc
 .direnv
+
+# Ruby/Bundler
+.bundle
+vendor
+
+# Terraform
+*.tfstate
+*.tfstate.backup
diff --git a/.rspec b/.rspec
new file mode 100644
index 0000000..16f9cdb
--- /dev/null
+++ b/.rspec
@@ -0,0 +1,2 @@
+--color
+--format documentation
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..2bf1c1c
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.3.1
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..024da78
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,4 @@
+source 'https://rubygems.org'
+
+gem 'rake'
+gem 'awspec'
diff --git a/Gemfile.lock b/Gemfile.lock
new file mode 100644
index 0000000..b57c033
--- /dev/null
+++ b/Gemfile.lock
@@ -0,0 +1,66 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (4.2.7)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    aws-sdk (2.2.37)
+      aws-sdk-resources (= 2.2.37)
+    aws-sdk-core (2.2.37)
+      jmespath (~> 1.0)
+    aws-sdk-resources (2.2.37)
+      aws-sdk-core (= 2.2.37)
+    aws_config (0.0.4)
+    awsecrets (1.3.0)
+      aws-sdk (>= 2.2.7, < 2.4)
+      aws_config (= 0.0.4)
+    awspec (0.47.0)
+      activesupport (~> 4.0)
+      aws-sdk (~> 2.2.37)
+      awsecrets (~> 1.3.0)
+      rspec (~> 3.0)
+      rspec-its
+      term-ansicolor
+      thor
+    diff-lcs (1.2.5)
+    i18n (0.7.0)
+    jmespath (1.3.1)
+    json (1.8.3)
+    minitest (5.9.0)
+    rake (11.2.2)
+    rspec (3.5.0)
+      rspec-core (~> 3.5.0)
+      rspec-expectations (~> 3.5.0)
+      rspec-mocks (~> 3.5.0)
+    rspec-core (3.5.1)
+      rspec-support (~> 3.5.0)
+    rspec-expectations (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-its (1.2.0)
+      rspec-core (>= 3.0.0)
+      rspec-expectations (>= 3.0.0)
+    rspec-mocks (3.5.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.5.0)
+    rspec-support (3.5.0)
+    term-ansicolor (1.3.2)
+      tins (~> 1.0)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tins (1.11.0)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  awspec
+  rake
+
+BUNDLED WITH
+   1.12.5
diff --git a/README.md b/README.md
index df42b5a..4273f5f 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,12 @@ Requirements
 --------------------------------------------------------------------------------
 
 - Python 2.7 (Recommend [yyuu/pyenv: Simple Python version management](https://github.com/yyuu/pyenv))
-- pip
-- virtualenv
+    - pip
+    - virtualenv
+- Ruby 2.3.1 (Recoomend [rbenv/rbenv: Groom your app’s Ruby environment with rbenv](https://github.com/rbenv/rbenv))
+    - RubyGems
+    - Bundler
+- Terraform
 
 
 Getting Started
@@ -19,6 +23,7 @@ Install dependencies:
 
 ```sh
 $ pip install -r requirements.txt
+$ bundle install --path vendor/bundle
 ```
 
 Create IAM role to execute lambda functions:
@@ -32,6 +37,8 @@ $ apex infra apply   # Apply changes
 Development AWS Lambda functions
 --------------------------------------------------------------------------------
 
+### Create a function
+
 Move to the `example` function directory:
 
 ```
@@ -58,6 +65,15 @@ $ apex deploy example --chdir ../../ --log-level debug
 ```
 
 
+### Project testing
+
+Run all tests:
+
+```sh
+$ bundle exec rake spec
+```
+
+
 LICENSE
 --------------------------------------------------------------------------------
 
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..941f88c
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,3 @@
+require 'rspec/core/rake_task'
+RSpec::Core::RakeTask.new('spec')
+task :default => :spec
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..5a23deb
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1 @@
+require 'awspec'