1 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/test/base_test.rb b/activerecord/test/base_test.rb
index 8b3a279287..7ea21156f1 100755
--- a/activerecord/test/base_test.rb
+++ b/activerecord/test/base_test.rb
@@ -1275,6 +1275,15 @@ class BasicsTest < Test::Unit::TestCase
     assert_equal 1, topics(:first).parent_id
   end
   
+  def test_increment_attribute_by
+    assert_equal 50, accounts(:signals37).credit_limit
+    accounts(:signals37).increment! :credit_limit, 5
+    assert_equal 55, accounts(:signals37, :reload).credit_limit    
+
+    accounts(:signals37).increment(:credit_limit, 1).increment!(:credit_limit, 3)
+    assert_equal 59, accounts(:signals37, :reload).credit_limit
+  end
+  
   def test_decrement_attribute
     assert_equal 50, accounts(:signals37).credit_limit
 
@@ -1285,6 +1294,15 @@ class BasicsTest < Test::Unit::TestCase
     assert_equal 47, accounts(:signals37, :reload).credit_limit
   end
   
+  def test_decrement_attribute_by
+    assert_equal 50, accounts(:signals37).credit_limit
+    accounts(:signals37).decrement! :credit_limit, 5
+    assert_equal 45, accounts(:signals37, :reload).credit_limit    
+
+    accounts(:signals37).decrement(:credit_limit, 1).decrement!(:credit_limit, 3)
+    assert_equal 41, accounts(:signals37, :reload).credit_limit
+  end
+  
   def test_toggle_attribute
     assert !topics(:first).approved?
     topics(:first).toggle!(:approved)