require 'spec_helper'

RSpec.describe PolishGeeks::DevTools::Commands::AllowedExtensions do
  subject(:allowed_extensions) { described_class.new }

  describe '#execute' do
    let(:file_name) { 'file.rb' }
    let(:files) { [PolishGeeks::DevTools.app_root + '/config/' + file_name] }

    before do
      expect(Dir).to receive(:[]) { files }
      allowed_extensions.execute
    end

    context 'when we dont have invalid files' do
      it { expect(allowed_extensions.output).to eq [] }
    end

    context 'when we have invalid files' do
      let(:file_name) { 'file.py' }
      it { expect(allowed_extensions.output).to eq [file_name] }
    end
  end

  describe '#label' do
    let(:expected) { 'Allowed Extensions' }
    it { expect(allowed_extensions.label).to eq expected }
  end

  describe '#error_message' do
    let(:output) { [rand.to_s, rand.to_s] }
    let(:expected) do
      'Following files are not allowed in config directory:'\
      "\n\n#{output.join("\n")}\n"
    end

    before { allowed_extensions.instance_variable_set('@output', output) }
    it { expect(allowed_extensions.error_message).to eq expected }
  end

  describe do
    before { allowed_extensions.instance_variable_set('@output', output) }

    context 'when output is empty' do
      let(:output) { '' }
      it { expect(allowed_extensions.valid?).to eq true }
    end

    context 'when output is empty' do
      let(:output) { rand.to_s }
      it { expect(allowed_extensions.valid?).to eq false }
    end
  end
end