Initial commit

lib/koans.ex

@@ -0,0 +1,22 @@
+defmodule Koans do
+  defmacro koan(name, body) do
+    compiled_name = :"koan: #{name}"
+    quote do
+      def unquote(compiled_name)() do
+        try do
+          unquote(body)
+          :ok
+        rescue
+          e in ExUnit.AssertionError -> e
+        end
+      end
+    end
+  end
+
+  defmacro __using__(_) do
+    quote do
+      import Koans
+      import ExUnit.Assertions
+    end
+  end
+end