SQLServer: don't choke on strings containing 'null'. Closes #7083.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6084 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 10 insertions, 2 deletions

diff --git a/activerecord/test/base_test.rb b/activerecord/test/base_test.rb
index 8892dcbdc8..f2991bc721 100755
--- a/activerecord/test/base_test.rb
+++ b/activerecord/test/base_test.rb
@@ -164,8 +164,16 @@ class BasicsTest < Test::Unit::TestCase
     topic.reload
     assert_equal("null", topic.title)
     assert_equal("null", topic.author_name)
-  end  
-  
+  end
+
+  def test_save_nil_string_attributes
+    topic = Topic.find(1)
+    topic.title = nil
+    topic.save!
+    topic.reload
+    assert_nil topic.title
+  end
+
   def test_hashes_not_mangled
     new_topic = { :title => "New Topic" }
     new_topic_values = { :title => "AnotherTopic" }