# spec/support/examples/multiparameter_attributes.rb

shared_examples_for 'a model with multiparameter date attributes' do |factory, *attributes|
  subject { build factory }

  attributes.each do |attribute|
    it 'should assign date when all date parts are valid' do
      subject.assign_attributes(multiparameter_date(attribute, 2006, 12, 1))
      expect( subject.send(attribute) ).to eq Date.new(2006, 12, 1)
    end

    it 'should not assign date when missing year part' do
      subject.assign_attributes(multiparameter_date(attribute, nil, 12, 1))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing month part' do
      subject.assign_attributes(multiparameter_date(attribute, 2006, nil, 1))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing day part' do
      subject.assign_attributes(multiparameter_date(attribute, 2006, 12, nil))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing year and month parts' do
      subject.assign_attributes(multiparameter_date(attribute, nil, nil, 1))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing year and day parts' do
      subject.assign_attributes(multiparameter_date(attribute, nil, 12, nil))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing month and day parts' do
      subject.assign_attributes(multiparameter_date(attribute, 2006, nil, nil))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should not assign date when missing all date parts' do
      subject.assign_attributes(multiparameter_date(attribute, nil, nil, nil))
      expect( subject.send(attribute) ).to be_nil
    end

    it 'should raise error when month part is invalid' do
      expect {
        subject.assign_attributes(multiparameter_date(attribute, 2006, 99, 1))
      }.to raise_error ActiveModel::MultiparameterAssignmentErrors
    end

    it 'should raise error when day part is invalid' do
      expect {
        subject.assign_attributes(multiparameter_date(attribute, 2006, 12, 99))
      }.to raise_error ActiveModel::MultiparameterAssignmentErrors
    end
  end

  it 'should raise error when assigning to invalid attribute' do
    expect {
      subject.assign_attributes(multiparameter_date(:some_unreasonably_existing_attribute, 2006, 12, 1))
    }.to raise_error ActiveModel::MultiparameterAssignmentErrors
  end

  private

  def multiparameter_date(attribute, year, month, day)
    {
        "#{attribute}(1i)" => year.to_s,
        "#{attribute}(2i)" => month.to_s,
        "#{attribute}(3i)" => day.to_s,
    }
  end
end