diff --git a/test/functional_test.rb b/test/functional_test.rb
new file mode 100644
index 0000000..20aa11e
--- /dev/null
+++ b/test/functional_test.rb
@@ -0,0 +1,14 @@
+require 'test/unit'
+require 'functional'
+
+class FunTest < Test::Unit::TestCase
+	def test_to_fun_exists
+		assert_respond_to Object, :to_fun
+	end
+
+	def test_to_fun_to_a
+		assert_equal (0..100).to_a, (0..100).to_fun.to_a
+	end
+
+	
+end