require 'rails_helper'

describe ApplicationHelper do

  describe '#errors_bar' do

    # Mocking ActiveRecord error format:
    # - errors are presented as arrays
    # - no errors in a category returns an empty array
    let(:without) { double(errors: {base: []}) }
    let(:with) { double(errors: {base: ['base error']}) }
    let(:with_non_base) { double(errors: {base: [], email: ['is invalid']}) }
    let(:text) { 'Please correct the highlighted fields.' }

    context 'no errors' do

      it { expect(helper.errors_bar(without)).to be_nil }
      it { expect(helper.errors_bar(without, without)).to be_nil }
    end

    context 'errors' do

      it { expect(helper.errors_bar(with)).to have_selector('div.alert.alert-danger', text: 'Base error') }
      it { expect(helper.errors_bar(with, without)).to have_selector('div.alert.alert-danger', text: 'Base error') }
      it { expect(helper.errors_bar(with, with_non_base)).to have_selector('div.alert.alert-danger', text: "Base error\n#{text}") }
      it { expect(helper.errors_bar(with_non_base, without)).to have_selector('div.alert.alert-danger', text: text) }
      it { expect(helper.errors_bar(with, with)).to have_selector('div.alert.alert-danger', text: "Base error\nBase error") }
      it { expect(helper.errors_bar(with_non_base, with, with)).to have_selector('div.alert.alert-danger', text: "Base error\nBase error\n#{text}") }
    end
  end

  describe '#messages_bar' do

    it 'shows nothing' do
      expect(helper.messages_bar).to be_nil
    end

    it 'shows notice' do
      text = 'Success!'
      flash[:notice] = text
      expect(helper.messages_bar).to have_selector('div.alert.alert-success', text: text)
    end

    it 'shows alert' do
      text = 'Oopsy!'
      flash[:alert] = text
      expect(helper.messages_bar).to have_selector('div.alert.alert-warning', text: text)
    end

    it 'shows notice when provided both' do
      text = 'Success!'
      flash[:notice] = text
      flash[:alert] = 'Oopsy!'
      expect(helper.messages_bar).to have_selector('div.alert.alert-success', text: text)
    end
  end

  describe '#menu_item' do
    subject { helper.menu_item(item) { 'content' } }

    before do
      allow(helper).to receive(:section) { 'selected_list_item' }
    end

    context 'tag is selected' do
      let(:item) { 'selected_list_item' }

      it { is_expected.to have_selector('li.active', 'content') }
    end

    context 'list item is selected' do
      let(:item) { 'selected_list_item' }

      it 'appends the active class' do
        expect(helper.menu_item(item, tag: 'div') { 'content' }).to have_selector('div.active', 'content')
      end
    end

    context 'list item is selected and there are other options' do
      let(:item) { 'selected_list_item' }

      it 'appends the active class' do
        expect(helper.menu_item(item, class: 'nav-item') { 'content' }).to have_selector('li.nav-item.active', 'content')
      end
    end

    context 'list item is not selected' do
      let(:item) { 'unselected_list_item' }

      it { is_expected.to_not have_selector('li.active') }
      it { is_expected.to have_selector('li', 'content') }
    end
  end
end