require 'unit_spec_helper'

describe Shoulda::Matchers::ActiveModel::ValidateLengthOfMatcher, type: :model do
  context 'an attribute with a non-zero minimum length validation' do
    it 'accepts ensuring the correct minimum length' do
      expect(validating_length(minimum: 4)).
        to validate_length_of(:attr).is_at_least(4)
    end

    it 'rejects ensuring a lower minimum length with any message' do
      expect(validating_length(minimum: 4)).
        not_to validate_length_of(:attr).is_at_least(3).with_short_message(/.*/)
    end

    it 'rejects ensuring a higher minimum length with any message' do
      expect(validating_length(minimum: 4)).
        not_to validate_length_of(:attr).is_at_least(5).with_short_message(/.*/)
    end

    it 'does not override the default message with a blank' do
      expect(validating_length(minimum: 4)).
        to validate_length_of(:attr).is_at_least(4).with_short_message(nil)
    end
  end

  context 'an attribute with a minimum length validation of 0' do
    it 'accepts ensuring the correct minimum length' do
      expect(validating_length(minimum: 0)).
        to validate_length_of(:attr).is_at_least(0)
    end
  end

  context 'an attribute with a maximum length' do
    it 'accepts ensuring the correct maximum length' do
      expect(validating_length(maximum: 4)).
        to validate_length_of(:attr).is_at_most(4)
    end

    it 'rejects ensuring a lower maximum length with any message' do
      expect(validating_length(maximum: 4)).
        not_to validate_length_of(:attr).is_at_most(3).with_long_message(/.*/)
    end

    it 'rejects ensuring a higher maximum length with any message' do
      expect(validating_length(maximum: 4)).
        not_to validate_length_of(:attr).is_at_most(5).with_long_message(/.*/)
    end

    it 'does not override the default message with a blank' do
      expect(validating_length(maximum: 4)).
        to validate_length_of(:attr).is_at_most(4).with_long_message(nil)
    end
  end

  context 'an attribute with a required exact length' do
    it 'accepts ensuring the correct length' do
      expect(validating_length(is: 4)).
        to validate_length_of(:attr).is_equal_to(4)
    end

    it 'rejects ensuring a lower maximum length with any message' do
      expect(validating_length(is: 4)).
        not_to validate_length_of(:attr).is_equal_to(3).with_message(/.*/)
    end

    it 'rejects ensuring a higher maximum length with any message' do
      expect(validating_length(is: 4)).
        not_to validate_length_of(:attr).is_equal_to(5).with_message(/.*/)
    end

    it 'does not override the default message with a blank' do
      expect(validating_length(is: 4)).
        to validate_length_of(:attr).is_equal_to(4).with_message(nil)
    end
  end

  context 'an attribute with a required exact length and another validation' do
    it 'accepts ensuring the correct length' do
      model = define_model(:example, attr: :string) do
        validates_length_of :attr, is: 4
        validates_numericality_of :attr
      end.new

      expect(model).to validate_length_of(:attr).is_equal_to(4)
    end
  end

  context 'an attribute with a custom minimum length validation' do
    it 'accepts ensuring the correct minimum length' do
      expect(validating_length(minimum: 4, too_short: 'foobar')).
        to validate_length_of(:attr).is_at_least(4).with_short_message(/foo/)
    end
  end

  context 'an attribute with a custom maximum length validation' do
    it 'accepts ensuring the correct minimum length' do
      expect(validating_length(maximum: 4, too_long: 'foobar')).
        to validate_length_of(:attr).is_at_most(4).with_long_message(/foo/)
    end
  end

  context 'an attribute with a custom equal validation' do
    it 'accepts ensuring the correct exact length' do
      expect(validating_length(is: 4, message: 'foobar')).
        to validate_length_of(:attr).is_equal_to(4).with_message(/foo/)
    end
  end

  context 'an attribute without a length validation' do
    it 'rejects ensuring a minimum length' do
      expect(define_model(:example, attr: :string).new).
        not_to validate_length_of(:attr).is_at_least(1)
    end
  end

  context 'using translations' do
    after { I18n.backend.reload! }

    context "a too_long translation containing %{attribute}, %{model}" do
      before do
        stub_translation(
          "activerecord.errors.messages.too_long",
          "The %{attribute} of your %{model} is too long (maximum is %{count} characters)")
      end

      it "does not raise an exception" do
        expect {
          expect(validating_length(maximum: 4)).
            to validate_length_of(:attr).is_at_most(4)
        }.to_not raise_exception
      end
    end

    context "a too_short translation containing %{attribute}, %{model}" do
      before do
        stub_translation(
          "activerecord.errors.messages.too_short",
          "The %{attribute} of your %{model} is too short (minimum is %{count} characters)")
      end

      it "does not raise an exception" do
        expect {
          expect(validating_length(minimum: 4)).to validate_length_of(:attr).is_at_least(4)
        }.to_not raise_exception
      end
    end

    context "a wrong_length translation containing %{attribute}, %{model}" do
      before do
        stub_translation(
          "activerecord.errors.messages.wrong_length",
          "The %{attribute} of your %{model} is the wrong length (should be %{count} characters)")
      end

      it "does not raise an exception" do
        expect {
          expect(validating_length(is: 4)).
            to validate_length_of(:attr).is_equal_to(4)
        }.to_not raise_exception
      end
    end
  end

  def validating_length(options = {})
    define_model(:example, attr: :string) do
      validates_length_of :attr, options
    end.new
  end
end