updated persistence test because we can't update an identity column

Author: Anna

test/cases/persistence_test_sqlserver.rb

@@ -22,7 +22,7 @@ class PersistencesTest < ActiveRecord::TestCase
 
   fixtures :topics, :companies, :developers, :projects, :computers, :accounts, :minimalistics, 'warehouse-things', :authors, :categorizations, :categories, :posts, :minivans
 
-  COERCED_TESTS = [:test_update_all_doesnt_ignore_order]
+  COERCED_TESTS = [:test_update_all_doesnt_ignore_order, :test_update_columns_changing_id, :test_update_attributes]
 
   include SqlserverCoercedTest
 
@@ -43,7 +43,28 @@ def test_coerced_update_all_doesnt_ignore_order
       end
     end
   end
-  
+
+  def test_coerced_update_attributes
+    topic = Topic.find(1)
+    assert !topic.approved?
+    assert_equal "The First Topic", topic.title
+
+    topic.update_attributes("approved" => true, "title" => "The First Topic Updated")
+    topic.reload
+    assert topic.approved?
+    assert_equal "The First Topic Updated", topic.title
+
+    topic.update_attributes(approved: false, title: "The First Topic")
+    topic.reload
+    assert !topic.approved?
+    assert_equal "The First Topic", topic.title
+
+    assert_raise(ActiveRecord::RecordNotUnique, ActiveRecord::StatementInvalid) do
+      Topic.create!(id: 3, title: "Hm is it possible?")
+    end
+    assert_not_equal "Hm is it possible?", Topic.find(3).title
+  end
+
 end