rails--rails/activemodel/test/cases/validations/callbacks_test.rb

require 'cases/helper'

class Dog
  include ActiveModel::Validations
  include ActiveModel::Validations::Callbacks

  attr_accessor :name, :history

  def initialize
    @history = []
  end
end

class DogWithMethodCallbacks < Dog
  before_validation :set_before_validation_marker
  after_validation :set_after_validation_marker

  def set_before_validation_marker; self.history << 'before_validation_marker'; end
  def set_after_validation_marker;  self.history << 'after_validation_marker' ; end
end

class DogValidatorsAreProc < Dog
  before_validation { self.history << 'before_validation_marker' }
  after_validation  { self.history << 'after_validation_marker' }
end

class DogWithTwoValidators < Dog
  before_validation { self.history << 'before_validation_marker1' }
  before_validation { self.history << 'before_validation_marker2' }
end

class DogDeprecatedBeforeValidatorReturningFalse < Dog
  before_validation { false }
  before_validation { self.history << 'before_validation_marker2' }
end

class DogBeforeValidatorThrowingAbort < Dog
  before_validation { throw :abort }
  before_validation { self.history << 'before_validation_marker2' }
end

class DogAfterValidatorReturningFalse < Dog
  after_validation { false }
  after_validation { self.history << 'after_validation_marker' }
end

class DogWithMissingName < Dog
  before_validation { self.history << 'before_validation_marker' }
  validates_presence_of :name
end

class DogValidatorWithOnCondition < Dog
  before_validation :set_before_validation_marker, on: :create
  after_validation :set_after_validation_marker, on: :create

  def set_before_validation_marker; self.history << 'before_validation_marker'; end
  def set_after_validation_marker;  self.history << 'after_validation_marker' ; end
end

class DogValidatorWithIfCondition < Dog
  before_validation :set_before_validation_marker1, if: -> { true }
  before_validation :set_before_validation_marker2, if: -> { false }

  after_validation :set_after_validation_marker1, if: -> { true }
  after_validation :set_after_validation_marker2, if: -> { false }

  def set_before_validation_marker1; self.history << 'before_validation_marker1'; end
  def set_before_validation_marker2; self.history << 'before_validation_marker2' ; end

  def set_after_validation_marker1; self.history << 'after_validation_marker1'; end
  def set_after_validation_marker2; self.history << 'after_validation_marker2' ; end
end


class CallbacksWithMethodNamesShouldBeCalled < ActiveModel::TestCase

  def test_if_condition_is_respected_for_before_validation
    d = DogValidatorWithIfCondition.new
    d.valid?
    assert_equal ["before_validation_marker1", "after_validation_marker1"], d.history
  end

  def test_on_condition_is_respected_for_validation_with_matching_context
    d = DogValidatorWithOnCondition.new
    d.valid?(:create)
    assert_equal ["before_validation_marker", "after_validation_marker"], d.history
  end

  def test_on_condition_is_respected_for_validation_without_matching_context
    d = DogValidatorWithOnCondition.new
    d.valid?(:save)
    assert_equal [], d.history
  end

  def test_on_condition_is_respected_for_validation_without_context
    d = DogValidatorWithOnCondition.new
    d.valid?
    assert_equal [], d.history
  end

  def test_before_validation_and_after_validation_callbacks_should_be_called
    d = DogWithMethodCallbacks.new
    d.valid?
    assert_equal ['before_validation_marker', 'after_validation_marker'], d.history
  end

  def test_before_validation_and_after_validation_callbacks_should_be_called_with_proc
    d = DogValidatorsAreProc.new
    d.valid?
    assert_equal ['before_validation_marker', 'after_validation_marker'], d.history
  end

  def test_before_validation_and_after_validation_callbacks_should_be_called_in_declared_order
    d = DogWithTwoValidators.new
    d.valid?
    assert_equal ['before_validation_marker1', 'before_validation_marker2'], d.history
  end

  def test_further_callbacks_should_not_be_called_if_before_validation_throws_abort
    d = DogBeforeValidatorThrowingAbort.new
    output = d.valid?
    assert_equal [], d.history
    assert_equal false, output
  end

  def test_deprecated_further_callbacks_should_not_be_called_if_before_validation_returns_false
    d = DogDeprecatedBeforeValidatorReturningFalse.new
    assert_deprecated do
      output = d.valid?
      assert_equal [], d.history
      assert_equal false, output
    end
  end

  def test_further_callbacks_should_be_called_if_after_validation_returns_false
    d = DogAfterValidatorReturningFalse.new
    d.valid?
    assert_equal ['after_validation_marker'], d.history
  end

  def test_validation_test_should_be_done
    d = DogWithMissingName.new
    output = d.valid?
    assert_equal ['before_validation_marker'], d.history
    assert_equal false, output
  end

end