From 420f7fd507fd5868adc1e0398c2422aac16d2013 Mon Sep 17 00:00:00 2001
From: Joe Van Dyk <joe@fixieconsulting.com>
Date: Thu, 27 Oct 2011 08:25:42 -0700
Subject: Added failing test case for changing schema in migration not clearing
 the prepared statement cache

---
 activerecord/test/cases/query_cache_test.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'activerecord/test/cases/query_cache_test.rb')

diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index b2429d631f..9554386dcf 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -170,6 +170,18 @@ end
 class QueryCacheExpiryTest < ActiveRecord::TestCase
   fixtures :tasks, :posts, :categories, :categories_posts
 
+  def test_cache_gets_cleared_after_migration
+    # warm the cache
+    Post.find(1)
+
+    # change the column definition
+    Post.connection.change_column :posts, :title, :string, :limit => 80
+    assert_nothing_raised { Post.find(1) }
+
+    # restore the old definition
+    Post.connection.change_column :posts, :title, :string
+  end
+
   def test_find
     Task.connection.expects(:clear_query_cache).times(1)
 
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