From e64394fbaa484db285d900b515cc5f5d983b846a Mon Sep 17 00:00:00 2001
From: Tom Gurion <nagasaki45@gmail.com>
Date: Sat, 22 Apr 2017 22:57:52 +0100
Subject: [PATCH] Add nil example to the atoms koans

---
 lib/koans/05_atoms.ex           | 5 +++++
 test/koans/atoms_koans_test.exs | 1 +
 2 files changed, 6 insertions(+)

diff --git a/lib/koans/05_atoms.ex b/lib/koans/05_atoms.ex
index f6b56bb..27d6cfb 100644
--- a/lib/koans/05_atoms.ex
+++ b/lib/koans/05_atoms.ex
@@ -14,4 +14,9 @@ defmodule Atoms do
     assert :true == ___
     assert :false == ___
   end
+
+  koan "Like booleans, the nil value is also an atom" do
+    assert is_atom(nil) == ___
+    assert :nil == ___
+  end
 end
diff --git a/test/koans/atoms_koans_test.exs b/test/koans/atoms_koans_test.exs
index 794a81e..37bbcdc 100644
--- a/test/koans/atoms_koans_test.exs
+++ b/test/koans/atoms_koans_test.exs
@@ -6,6 +6,7 @@ defmodule AtomsTests do
     answers = [
       :human,
       {:multiple, [true, true, true, false]},
+      {:multiple, [true, nil]}
     ]
 
     test_all(Atoms, answers)