Add :allow_blank to validations. Like allow_nil, but for values which are +blank?+. [jnoon] Closes #7383

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7407 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 18 insertions, 0 deletions

diff --git a/activerecord/test/validations_test.rb b/activerecord/test/validations_test.rb
index cd4b27a7dd..8c7ef759e6 100755
--- a/activerecord/test/validations_test.rb
+++ b/activerecord/test/validations_test.rb
@@ -457,6 +457,24 @@ class ValidationsTest < Test::Unit::TestCase
     assert developer.valid?
   end
 
+  def test_validates_length_of_with_allow_nil
+    Topic.validates_length_of( :title, :is => 5, :allow_nil=>true )
+
+    assert !Topic.create("title" => "ab").valid?
+    assert !Topic.create("title" => "").valid?
+    assert Topic.create("title" => nil).valid?
+    assert Topic.create("title" => "abcde").valid?
+  end
+
+  def test_validates_length_of_with_allow_blank
+    Topic.validates_length_of( :title, :is => 5, :allow_blank=>true )
+
+    assert !Topic.create("title" => "ab").valid?
+    assert Topic.create("title" => "").valid?
+    assert Topic.create("title" => nil).valid?
+    assert Topic.create("title" => "abcde").valid?
+  end
+
   def test_numericality_with_allow_nil_and_getter_method
     Developer.validates_numericality_of( :salary, :allow_nil => true)
     developer = Developer.new("name" => "michael", "salary" => nil)