diff --git a/spec/examples/layouts.yml b/spec/examples/layouts.yml
new file mode 100644
index 0000000..b87748f
--- /dev/null
+++ b/spec/examples/layouts.yml
@@ -0,0 +1,13 @@
+# Simple two windows layout
+two-windows:
+  windows:
+    - name: "foo"
+      splits:
+        - cmd: "echo 'foo'"
+        - cmd: "echo 'foo again'"
+          width: 50
+    - name: "bar"
+      splits:
+        - cmd: "echo 'bar'"
+        - cmd: "echo 'bar again'"
+          width: 50
diff --git a/spec/layout.rb b/spec/layout.rb
new file mode 100644
index 0000000..571d772
--- /dev/null
+++ b/spec/layout.rb
@@ -0,0 +1,13 @@
+require File.join(File.dirname(__FILE__), "spec_helper.rb")
+
+describe Teamocil::Layout do
+  context "initializing" do
+
+    it "create two windows" do # {{{
+      layout = Teamocil::Layout.new(examples["two-windows"], {})
+      commands = layout.generate_commands
+      commands.grep(/new-window/).length.should be 2
+    end # }}}
+
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..272f79c
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,17 @@
+$:.unshift File.join(File.dirname(__FILE__), *%w[.. lib])
+
+require 'yaml'
+require 'teamocil'
+
+module Helpers
+
+  def examples # {{{
+    return @@examples if defined?(@@examples)
+    @@examples = YAML.load_file(File.join(File.dirname(__FILE__), "examples/layouts.yml"))
+  end # }}}
+
+end
+
+RSpec.configure do |c|
+  c.include Helpers
+end
diff --git a/teamocil.gemspec b/teamocil.gemspec
index a881438..58e6a29 100644
--- a/teamocil.gemspec
+++ b/teamocil.gemspec
@@ -7,7 +7,10 @@ spec = Gem::Specification.new do |s|
   s.homepage     = "http://github.com/remiprev/teamocil"
   s.summary      = "Easy window and split layouts for tmux"
   s.description  = "Teamocil helps you set up window and splits layouts for tmux using YAML configuration files."
-  s.files        = Dir["lib/**/*.rb", "README.mkd", "LICENSE", "bin/*"]
+  s.files        = Dir["lib/**/*.rb", "README.mkd", "LICENSE", "bin/*", "spec/**/*.rb"]
   s.require_path = "lib"
-  s.executables << 'teamocil'
+  s.executables << "teamocil"
+
+  s.add_development_dependency("rspec")
+
 end