# frozen_string_literal: true

describe QA::Page::Base do
  describe 'page helpers' do
    it 'exposes helpful page helpers' do
      expect(subject).to respond_to :refresh, :wait_until, :scroll_to
    end
  end

  describe '.view', 'DSL for defining view partials' do
    subject do
      Class.new(described_class) do
        view 'path/to/some/view.html.haml' do
          element :something, 'string pattern' # rubocop:disable QA/ElementWithPattern
          element :something_else, /regexp pattern/ # rubocop:disable QA/ElementWithPattern
        end

        view 'path/to/some/_partial.html.haml' do
          element :another_element, 'string pattern' # rubocop:disable QA/ElementWithPattern
        end
      end
    end

    it 'makes it possible to define page views' do
      expect(subject.views.size).to eq 2
      expect(subject.views).to all(be_an_instance_of(QA::Page::View))
    end

    it 'populates views objects with data about elements' do
      expect(subject.elements.size).to eq 3
      expect(subject.elements).to all(be_an_instance_of(QA::Page::Element))
      expect(subject.elements.map(&:name))
        .to eq [:something, :something_else, :another_element]
    end
  end

  describe '.errors' do
    let(:view) { double('view') }

    context 'when page has views and elements defined' do
      before do
        allow(described_class).to receive(:views)
          .and_return([view])

        allow(view).to receive(:errors).and_return(['some error'])
      end

      it 'iterates views composite and returns errors' do
        expect(described_class.errors).to eq ['some error']
      end
    end

    context 'when page has no views and elements defined' do
      before do
        allow(described_class).to receive(:views).and_return([])
      end

      it 'appends an error about missing views / elements block' do
        expect(described_class.errors)
          .to include 'Page class does not have views / elements defined!'
      end
    end
  end

  describe '#wait_until' do
    subject { Class.new(described_class).new }

    context 'when the condition is true' do
      it 'does not refresh' do
        expect(subject).not_to receive(:refresh)

        subject.wait_until(max_duration: 0.01, raise_on_failure: false) { true }
      end

      it 'returns true' do
        expect(subject.wait_until(max_duration: 0.1, raise_on_failure: false) { true }).to be_truthy
      end
    end

    context 'when the condition is false' do
      it 'refreshes' do
        expect(subject).to receive(:refresh).at_least(:once)

        subject.wait_until(max_duration: 0.01, raise_on_failure: false) { false }
      end

      it 'returns false' do
        allow(subject).to receive(:refresh)

        expect(subject.wait_until(max_duration: 0.01, raise_on_failure: false) { false }).to be_falsey
      end
    end
  end

  describe '#all_elements' do
    before do
      allow(subject).to receive(:all)
    end

    it 'raises an error if count or minimum are not specified' do
      expect { subject.all_elements(:foo) }.to raise_error ArgumentError
    end

    it 'does not raise an error if :minimum, :maximum, :count, or :between is specified' do
      [:minimum, :maximum, :count, :between].each do |param|
        expect { subject.all_elements(:foo, param => 1) }.not_to raise_error
      end
    end
  end

  context 'elements' do
    subject do
      Class.new(described_class) do
        view 'path/to/some/view.html.haml' do
          element :something, required: true
          element :something_else
        end
      end
    end

    describe '#elements' do
      it 'returns all elements' do
        expect(subject.elements.size).to eq(2)
      end
    end

    describe '#required_elements' do
      it 'returns only required elements' do
        expect(subject.required_elements.size).to eq(1)
      end
    end

    describe '#visible?', 'Page is currently visible' do
      let(:page) { subject.new }

      context 'with elements' do
        context 'on the page' do
          before do
            # required elements not there, meaning not on page
            allow(page).to receive(:has_no_element?).and_return(false)
          end

          it 'is visible' do
            expect(page).to be_visible
          end
        end

        context 'not on the page' do
          before do
            # required elements are not on the page
            allow(page).to receive(:has_no_element?).and_return(true)
          end

          it 'is not visible' do
            expect(page).not_to be_visible
          end
        end

        it 'does not raise error if page has elements' do
          expect { page.visible? }.not_to raise_error
        end
      end

      context 'no elements' do
        subject do
          Class.new(described_class) do
            view 'path/to/some/view.html.haml' do
              element :something
              element :something_else
            end
          end
        end

        let(:page) { subject.new }

        it 'raises error if page has no required elements' do
          expect { page.visible? }.to raise_error(described_class::NoRequiredElementsError)
        end
      end
    end
  end
end
