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path: root/qa/spec/page/view_spec.rb
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describe QA::Page::View do
  let(:element) do
    double("element", name: :something, pattern: /some element/)
  end

  subject { described_class.new("some/file.html", [element]) }

  describe ".evaluate" do
    it "evaluates a block and returns a DSL object" do
      results = described_class.evaluate {
        element :something
        element :something_else
      }

      expect(results.elements.size).to eq 2
    end
  end

  describe "#pathname" do
    it "returns an absolute and clean path to the view" do
      expect(subject.pathname.to_s).not_to include "qa/page/"
      expect(subject.pathname.to_s).to include "some/file.html"
    end
  end

  describe "#errors" do
    context "when view partial is present" do
      before do
        allow(subject.pathname).to receive(:readable?)
          .and_return(true)
      end

      context "when pattern is found" do
        before do
          allow(::File).to receive(:foreach)
            .and_yield("some element").once
          allow(element).to receive(:matches?)
            .with("some element").and_return(true)
        end

        it "walks through the view and asserts on elements existence" do
          expect(subject.errors).to be_empty
        end
      end

      context "when pattern has not been found" do
        before do
          allow(::File).to receive(:foreach)
            .and_yield("some element").once
          allow(element).to receive(:matches?)
            .with("some element").and_return(false)
        end

        it "returns an array of errors related to missing elements" do
          expect(subject.errors).not_to be_empty
          expect(subject.errors.first)
            .to match %r{Missing element `.*` in `.*/some/file.html` view}
        end
      end
    end

    context "when view partial has not been found" do
      it "returns an error when it is not able to find the partial" do
        expect(subject.errors).to be_one
        expect(subject.errors.first)
          .to match %r{Missing view partial `.*/some/file.html`!}
      end
    end
  end
end