<NME> time_spec.rb
<BEF> ADDFILE
<MSG> Time.timer docs & specs

<DFF> @@ -0,0 +1,11 @@
+# encoding: utf-8
+
+require_relative "../../../lib/rango/ext/time"
+
+describe Time do
+  describe ".timer" do
+    it "should returns how long it takes to run the block" do
+      Time.timer { sleep 0.001 }.round(3).should eql(0.001)
+    end
+  end
+end

Time.timer docs & specs