From 2d129fffd7278ce292dbb76d7b7ad493811ee22d Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Tue, 27 Aug 2019 21:21:26 -0700
Subject: Handle invalid checksums

---
 engine.rb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'engine.rb')

diff --git a/engine.rb b/engine.rb
index b04e2f2..7b9ddf0 100644
--- a/engine.rb
+++ b/engine.rb
@@ -1,3 +1,6 @@
+class InvalidChecksumError < StandardError
+end
+
 class Engine
   def initialize hash
     validate_checksum hash
@@ -6,7 +9,7 @@ class Engine
 
   def validate_checksum hash
     if !checksum_valid? hash
-      throw 'Invalid state, checksum does not match!'
+      raise InvalidChecksumError
     end
   end
 
-- 
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