require 'hound/tools/hound_yml'

require_relative 'template_spec'

RSpec.describe Hound::Tools::HoundYml do
  filename = '.hound.yml'

  it_behaves_like 'a template', filename

  describe '#rubocop_filename' do
    before do
      allow(IO).to receive(:read).with(filename).and_return("ruby:\n  config_file: foo.yml")
    end

    it 'reads the name from the YAML' do
      expect(subject.rubocop_filename).to eq('foo.yml')
    end
  end

  describe '#generate' do
    before do
      allow(IO).to receive(:read).
        with(/lib\/hound\/tools\/templates\/_#{filename}$/).and_call_original
      allow($stderr).to receive(:puts)
      allow($stdout).to receive(:puts)
    end

    context "with no #{filename}" do
      before do
        allow(IO).to receive(:read).with(filename).and_raise(Errno::ENOENT)
        allow(IO).to receive(:write).with(filename, anything)
        allow(FileUtils).to receive(:mkpath).with('.')
      end

      it "creates a valid #{filename} file" do
        expect(IO).to receive(:write).with(filename, anything) do |_file, data|
          expect(data).to be
          config = YAML::load(data)['ruby']
          expect(config).to include('enabled' => true)
          expect(config).to include('config_file' => '.rubocop_merged_for_hound.yml')
        end

        subject.generate
      end
    end

    context "with existing invalid #{filename}" do
      before do
        allow(IO).to receive(:read).with(filename).and_return(data)
      end

      context "with no 'ruby' section" do
        let(:data) { 'foo: :bar' }

        it 'says the file is invalid' do
          msg = "Error: #{filename} is invalid! (No 'ruby' section)"
          expect($stderr).to receive(:puts).with(msg)
          subject.generate
        end

        it 'returns false' do
          expect(subject.generate).to be_falsey
        end
      end

      context "with no 'config_file' section" do
        let(:data) { "ruby:\n\  bar: baz" }

        it 'says the file is invalid' do
          msg = "Error: #{filename} is invalid! (No 'config_file' section)"
          expect($stderr).to receive(:puts).with(msg)
          subject.generate
        end
      end
    end
  end
end