require 'spec_helper'
require 'html/pipeline'

module Gitlab::Markdown
  describe LabelReferenceFilter do
    include ReferenceFilterSpecHelper

    let(:project)   { create(:empty_project) }
    let(:label)     { create(:label, project: project) }
    let(:reference) { "~#{label.id}" }

    it 'requires project context' do
      expect { described_class.call('Label ~123', {}) }.
        to raise_error(ArgumentError, /:project/)
    end

    %w(pre code a style).each do |elem|
      it "ignores valid references contained inside '#{elem}' element" do
        exp = act = "<#{elem}>Label #{reference}</#{elem}>"
        expect(filter(act).to_html).to eq exp
      end
    end

    it 'links to a valid reference' do
      doc = filter("See #{reference}")

      expect(doc.css('a').first.attr('href')).to eq urls.
        namespace_project_issues_url(project.namespace, project, label_name: label.name)
    end

    it 'links with adjacent text' do
      doc = filter("Label (#{reference}.)")
      expect(doc.to_html).to match(%r(\(<a.+><span.+>#{label.name}</span></a>\.\)))
    end

    it 'ignores invalid label IDs' do
      exp = act = "Label ~#{label.id + 1}"

      expect(filter(act).to_html).to eq exp
    end

    it 'includes default classes' do
      doc = filter("Label #{reference}")
      expect(doc.css('a').first.attr('class')).to eq 'gfm gfm-label'
    end

    it 'includes an optional custom class' do
      doc = filter("Label #{reference}", reference_class: 'custom')
      expect(doc.css('a').first.attr('class')).to include 'custom'
    end

    it 'supports an :only_path context' do
      doc = filter("Label #{reference}", only_path: true)
      link = doc.css('a').first.attr('href')

      expect(link).not_to match %r(https?://)
      expect(link).to eq urls.namespace_project_issues_url(project.namespace, project, label_name: label.name, only_path: true)
    end

    describe 'label span element' do
      it 'includes default classes' do
        doc = filter("Label #{reference}")
        expect(doc.css('a span').first.attr('class')).to eq 'label color-label'
      end

      it 'includes a style attribute' do
        doc = filter("Label #{reference}")
        expect(doc.css('a span').first.attr('style')).to match(/\Abackground-color: #\h{6}; color: #\h{6}\z/)
      end
    end
  end
end