Added new #update_column method.

Signed-off-by: Santiago Pastorino <santiago@wyeworks.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/activerecord/test/cases/persistence_test.rb b/activerecord/test/cases/persistence_test.rb
index 8ca9d626d1..8e6141eb81 100644
--- a/activerecord/test/cases/persistence_test.rb
+++ b/activerecord/test/cases/persistence_test.rb
@@ -389,6 +389,92 @@ class PersistencesTest < ActiveRecord::TestCase
     assert_not_equal prev_month, developer.updated_at
   end
 
+  def test_update_column
+    topic = Topic.find(1)
+    topic.update_column("approved", true)
+    assert topic.approved?
+    topic.reload
+    assert topic.approved?
+
+    topic.update_column(:approved, false)
+    assert !topic.approved?
+    topic.reload
+    assert !topic.approved?
+  end
+
+  def test_update_column_should_not_use_setter_method
+    dev = Developer.find(1)
+    dev.instance_eval { def salary=(value); write_attribute(:salary, value * 2); end }
+
+    dev.update_column(:salary, 80000)
+    assert_equal 80000, dev.salary
+
+    dev.reload
+    assert_equal 80000, dev.salary
+  end
+
+  def test_update_column_should_raise_exception_if_new_record
+    topic = Topic.new
+    assert_raises(ActiveRecord::ActiveRecordError) { topic.update_column("approved", false) }
+  end
+
+  def test_update_column_should_not_leave_the_object_dirty
+    topic = Topic.find(1)
+    topic.update_attribute("content", "Have a nice day")
+
+    topic.reload
+    topic.update_column(:content, "You too")
+    assert_equal [], topic.changed
+
+    topic.reload
+    topic.update_column("content", "Have a nice day")
+    assert_equal [], topic.changed
+  end
+
+  def test_update_column_with_model_having_primary_key_other_than_id
+    minivan = Minivan.find('m1')
+    new_name = 'sebavan'
+
+    minivan.update_column(:name, new_name)
+    assert_equal new_name, minivan.name
+  end
+
+  def test_update_column_for_readonly_attribute
+    minivan = Minivan.find('m1')
+    prev_color = minivan.color
+    assert_raises(ActiveRecord::ActiveRecordError) { minivan.update_column(:color, 'black') }
+    assert_equal prev_color, minivan.color
+  end
+
+  def test_update_column_should_not_modify_updated_at
+    developer = Developer.find(1)
+    prev_month = Time.now.prev_month
+
+    developer.update_column(:updated_at, prev_month)
+    assert_equal prev_month, developer.updated_at
+
+    developer.update_column(:salary, 80001)
+    assert_equal prev_month, developer.updated_at
+
+    developer.reload
+    assert_equal prev_month, developer.updated_at
+  end
+
+  def test_update_column_with_one_changed_and_one_updated
+    t = Topic.order('id').limit(1).first
+    title, author_name = t.title, t.author_name
+    t.author_name = 'John'
+    t.update_column(:title, 'super_title')
+    assert_equal 'John', t.author_name
+    assert_equal 'super_title', t.title
+    assert t.changed?, "topic should have changed"
+    assert t.author_name_changed?, "author_name should have changed"
+
+    t.reload
+    assert_equal author_name, t.author_name
+    assert_equal 'super_title', t.title
+  end
+
   def test_update_attributes
     topic = Topic.find(1)
     assert !topic.approved?