From 9b5dfb4e4290c1ad34439d7030ca3cb30e97afc3 Mon Sep 17 00:00:00 2001
From: Matt Yoho <mby@mattyoho.com>
Date: Tue, 21 Sep 2010 17:12:50 -0400
Subject: [PATCH] Add koan on asserting exceptions

---
 koans/about_exceptions.rb | 8 ++++++++
 src/about_exceptions.rb   | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/koans/about_exceptions.rb b/koans/about_exceptions.rb
index 33b538a..c44833e 100644
--- a/koans/about_exceptions.rb
+++ b/koans/about_exceptions.rb
@@ -57,4 +57,12 @@ class AboutExceptions < EdgeCase::Koan
     assert_equal __, result
   end
 
+  # Sometimes, we must know about the unknown
+  def test_asserting_an_error_is_raised
+    # A do-end is a block, a topic to explore more later
+    assert_raise(___) do
+      raise MySpecialError.new("New instances can be raised directly.")
+    end
+  end
+
 end
diff --git a/src/about_exceptions.rb b/src/about_exceptions.rb
index e65ed82..2960552 100644
--- a/src/about_exceptions.rb
+++ b/src/about_exceptions.rb
@@ -57,4 +57,12 @@ class AboutExceptions < EdgeCase::Koan
     assert_equal __(:always_run), result
   end
 
+  # Sometimes, we must know about the unknown
+  def test_asserting_an_error_is_raised
+    # A do-end is a block, a topic to explore more later
+    assert_raise(___(MySpecialError)) do
+      raise MySpecialError.new("New instances can be raised directly.")
+    end
+  end
+
 end