gitlab-org--gitlab-foss/spec/features/merge_requests/diffs_spec.rb

require 'spec_helper'

feature 'Diffs URL', js: true, feature: true do
  include ApplicationHelper

  let(:author_user) { create(:user) }
  let(:user) { create(:user) }
  let(:project) { create(:project, :public) }
  let(:forked_project) { Projects::ForkService.new(project, author_user).execute }
  let(:merge_request) { create(:merge_request_with_diffs, source_project: forked_project, target_project: project, author: author_user) }

  context 'when visit with */* as accept header' do
    before(:each) do
      page.driver.add_header('Accept', '*/*')
    end

    it 'renders the notes' do
      create :note_on_merge_request, project: project, noteable: merge_request, note: 'Rebasing with master'

      visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)

      # Load notes and diff through AJAX
      expect(page).to have_css('.note-text', visible: false, text: 'Rebasing with master')
      expect(page).to have_css('.diffs.tab-pane.active')
    end
  end

  context 'when merge request has overflow' do
    it 'displays warning' do
      allow_any_instance_of(MergeRequestDiff).to receive(:overflow?).and_return(true)
      allow(Commit).to receive(:max_diff_options).and_return(max_files: 20, max_lines: 20)

      visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)

      page.within('.alert') do
        expect(page).to have_text("Too many changes to show. Plain diff Email patch To preserve
          performance only 3 of 3 files are displayed.")
      end
    end
  end

  describe 'when editing file' do
    let(:changelog_id) { hexdigest("CHANGELOG") }

    context 'as author' do
      it 'shows direct edit link' do
        login_as(author_user)
        visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)

        # Throws `Capybara::Poltergeist::InvalidSelector` if we try to use `#hash` syntax
        expect(page).to have_selector("[id=\"#{changelog_id}\"] a.js-edit-blob")
      end
    end

    context 'as user who needs to fork' do
      it 'shows fork/cancel confirmation' do
        login_as(user)
        visit diffs_namespace_project_merge_request_path(project.namespace, project, merge_request)

        # Throws `Capybara::Poltergeist::InvalidSelector` if we try to use `#hash` syntax
        find("[id=\"#{changelog_id}\"] .js-edit-blob").click

        expect(page).to have_selector('.js-fork-suggestion-button', count: 1)
        expect(page).to have_selector('.js-cancel-fork-suggestion-button', count: 1)
      end
    end
  end
end