Commit 1b5b540

@@ -0,0 +1,15 @@
+require "spec_helper"
+
+describe "fibonacci" do
+  it "should return the first n numbers in fibonacci" do
+    f = ->(x){ x < 2 ? x : f.call(x-1) + f.call(x-2) }
+    20.times do |n|
+      fibonacci(n).should == f.call(n)
+    end
+  end
+
+  xit "can enumerate forever" do
+    fibonacci_enumerator.take_while { |n| n < 1000 }
+  end
+end
+