require 'spec_helper' describe backend.run_command('echo $LANG').stdout.strip do it { should eq 'C' } end describe do before do ENV['LANG'] = 'C' set :env, :LANG => 'ja_JP.UTF-8' end let(:lang) { backend.run_command('echo $LANG').stdout.strip } it { expect(lang).to eq 'ja_JP.UTF-8' } it { expect(ENV['LANG']).to eq 'C' } end