1 files changed, 80 insertions, 0 deletions
diff --git a/activerecord/test/cases/validations/length_validation_test.rb b/activerecord/test/cases/validations/length_validation_test.rb
new file mode 100644
index 0000000000..a7cb718043
--- /dev/null
+++ b/activerecord/test/cases/validations/length_validation_test.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "models/owner"
+require "models/pet"
+require "models/person"
+
+class LengthValidationTest < ActiveRecord::TestCase
+  fixtures :owners
+
+  setup do
+    @owner = Class.new(Owner) do
+      def self.name; "Owner"; end
+    end
+  end
+
+  def test_validates_size_of_association
+    assert_nothing_raised { @owner.validates_size_of :pets, minimum: 1 }
+    o = @owner.new("name" => "nopets")
+    assert_not o.save
+    assert_predicate o.errors[:pets], :any?
+    o.pets.build("name" => "apet")
+    assert_predicate o, :valid?
+  end
+
+  def test_validates_size_of_association_using_within
+    assert_nothing_raised { @owner.validates_size_of :pets, within: 1..2 }
+    o = @owner.new("name" => "nopets")
+    assert_not o.save
+    assert_predicate o.errors[:pets], :any?
+
+    o.pets.build("name" => "apet")
+    assert_predicate o, :valid?
+
+    2.times { o.pets.build("name" => "apet") }
+    assert_not o.save
+    assert_predicate o.errors[:pets], :any?
+  end
+
+  def test_validates_size_of_association_utf8
+    @owner.validates_size_of :pets, minimum: 1
+    o = @owner.new("name" => "あいうえおかきくけこ")
+    assert_not o.save
+    assert_predicate o.errors[:pets], :any?
+    o.pets.build("name" => "あいうえおかきくけこ")
+    assert_predicate o, :valid?
+  end
+
+  def test_validates_size_of_respects_records_marked_for_destruction
+    @owner.validates_size_of :pets, minimum: 1
+    owner = @owner.new
+    assert_not owner.save
+    assert_predicate owner.errors[:pets], :any?
+    pet = owner.pets.build
+    assert_predicate owner, :valid?
+    assert owner.save
+
+    pet_count = Pet.count
+    assert_not owner.update pets_attributes: [ { _destroy: 1, id: pet.id } ]
+    assert_not_predicate owner, :valid?
+    assert_predicate owner.errors[:pets], :any?
+    assert_equal pet_count, Pet.count
+  end
+
+  def test_validates_length_of_virtual_attribute_on_model
+    repair_validations(Pet) do
+      Pet.attr_accessor(:nickname)
+      Pet.validates_length_of(:name, minimum: 1)
+      Pet.validates_length_of(:nickname, minimum: 1)
+
+      pet = Pet.create!(name: "Fancy Pants", nickname: "Fancy")
+
+      assert_predicate pet, :valid?
+
+      pet.nickname = ""
+
+      assert_predicate pet, :invalid?
+    end
+  end
+end