Revert "Fix `validates_presence_of` with `:allow_nil` or `:allow_blank` options."

This reverts commit 93366c7c913bf0883f140fa782d3e198593477be.

REASON: This is backward incompatible. Also this behavior is documented
on the guides.

1 files changed, 0 insertions, 34 deletions

diff --git a/activemodel/test/cases/validations/presence_validation_test.rb b/activemodel/test/cases/validations/presence_validation_test.rb
index fbb008f9ff..510c13a7c3 100644
--- a/activemodel/test/cases/validations/presence_validation_test.rb
+++ b/activemodel/test/cases/validations/presence_validation_test.rb
@@ -70,38 +70,4 @@ class PresenceValidationTest < ActiveModel::TestCase
     p[:karma] = "Cold"
     assert p.valid?
   end
-
-  def test_validates_presence_of_with_allow_nil_option
-    Topic.validates_presence_of(:title, :allow_nil => true)
-
-    t = Topic.new(:title => "something")
-    assert t.valid?
-
-    t.title = ""
-    assert t.invalid?
-    assert_equal ["can't be blank"], t.errors[:title]
-
-    t.title = "  "
-    assert t.invalid?
-    assert_equal ["can't be blank"], t.errors[:title]
-
-    t.title = nil
-    assert t.valid?
-  end
-
-  def test_validates_presence_of_with_allow_blank_option
-    Topic.validates_presence_of(:title, :allow_blank => true)
-
-    t = Topic.new(:title => "something")
-    assert t.valid?
-
-    t.title = ""
-    assert t.valid?
-
-    t.title = "  "
-    assert t.valid?
-
-    t.title = nil
-    assert t.valid?
-  end
 end