Add cases to test combining validation conditions

- Test condition that is defined by array of conditions
 - Test condition that is defined by combining :if and :unless
 - Test local condition that is defined by :if
 - Test local condition that is defined by :unless

See http://edgeguides.rubyonrails.org/active_record_validations.html#combining-validation-conditions

activemodel/test/cases/validations/conditional_validation_test.rb

@@ -18,6 +18,22 @@ class ConditionalValidationTest < ActiveModel::TestCase
     assert_equal ["hoo 5"], t.errors["title"]
   end
 
+  def test_if_validation_using_array_of_true_methods
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: [:condition_is_true, :condition_is_true])
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.invalid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
+  def test_unless_validation_using_array_of_false_methods
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", unless: [:condition_is_false, :condition_is_false])
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.invalid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
+
   def test_unless_validation_using_method_true
     # When the method returns true
     Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", unless: :condition_is_true)
@@ -26,9 +42,23 @@ class ConditionalValidationTest < ActiveModel::TestCase
     assert_empty t.errors[:title]
   end
 
+  def test_if_validation_using_array_of_true_and_false_methods
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: [:condition_is_true, :condition_is_false])
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert_empty t.errors[:title]
+  end
+
+  def test_unless_validation_using_array_of_true_and_felse_methods
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", unless: [:condition_is_true, :condition_is_false])
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert_empty t.errors[:title]
+  end
+
   def test_if_validation_using_method_false
     # When the method returns false
-    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: :condition_is_true_but_its_not)
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: :condition_is_false)
     t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
     assert t.valid?
     assert_empty t.errors[:title]
@@ -36,7 +66,7 @@ class ConditionalValidationTest < ActiveModel::TestCase
 
   def test_unless_validation_using_method_false
     # When the method returns false
-    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", unless: :condition_is_true_but_its_not)
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", unless: :condition_is_false)
     t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
     assert t.invalid?
     assert t.errors[:title].any?
@@ -80,4 +110,19 @@ class ConditionalValidationTest < ActiveModel::TestCase
     assert t.errors[:title].any?
     assert_equal ["hoo 5"], t.errors["title"]
   end
+
+  def test_validation_using_conbining_if_true_and_unless_true_conditions
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: :condition_is_true, unless: :condition_is_true)
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.valid?
+    assert_empty t.errors[:title]
+  end
+
+  def test_validation_using_conbining_if_true_and_unless_false_conditions
+    Topic.validates_length_of(:title, maximum: 5, too_long: "hoo %{count}", if: :condition_is_true, unless: :condition_is_false)
+    t = Topic.new("title" => "uhohuhoh", "content" => "whatever")
+    assert t.invalid?
+    assert t.errors[:title].any?
+    assert_equal ["hoo 5"], t.errors["title"]
+  end
 end

activemodel/test/cases/validations/numericality_validation_test.rb

@@ -59,7 +59,7 @@ class NumericalityValidationTest < ActiveModel::TestCase
   end
 
   def test_validates_numericality_of_with_integer_only_and_symbol_as_value
-    Topic.validates_numericality_of :approved, only_integer: :condition_is_true_but_its_not
+    Topic.validates_numericality_of :approved, only_integer: :condition_is_false
 
     invalid!(NIL + BLANK + JUNK)
     valid!(FLOATS + INTEGERS + BIGDECIMAL + INFINITY)

activemodel/test/cases/validations/validates_test.rb

@@ -62,17 +62,23 @@ class ValidatesTest < ActiveModel::TestCase
   end
 
   def test_validates_with_if_as_local_conditions
-    Person.validates :karma, presence: true, email: { unless: :condition_is_true }
+    Person.validates :karma, presence: true, email: { if: :condition_is_false }
     person = Person.new
     person.valid?
     assert_equal ["can't be blank"], person.errors[:karma]
   end
 
   def test_validates_with_if_as_shared_conditions
-    Person.validates :karma, presence: true, email: true, if: :condition_is_true
+    Person.validates :karma, presence: true, email: true, if: :condition_is_false
+    person = Person.new
+    assert person.valid?
+  end
+
+  def test_validates_with_unless_as_local_conditions
+    Person.validates :karma, presence: true, email: { unless: :condition_is_true }
     person = Person.new
     person.valid?
-    assert_equal ["can't be blank", "is not an email"], person.errors[:karma].sort
+    assert_equal ["can't be blank"], person.errors[:karma]
   end
 
   def test_validates_with_unless_shared_conditions

activemodel/test/models/person.rb

@@ -9,6 +9,10 @@ class Person
   def condition_is_true
     true
   end
+
+  def condition_is_false
+    false
+  end
 end
 
 class Person::Gender

activemodel/test/models/topic.rb

@@ -23,7 +23,7 @@ class Topic
     true
   end
 
-  def condition_is_true_but_its_not
+  def condition_is_false
     false
   end