IceAge

require 'ice_age'

describe 'Feature' do
  context 'with new feature enabled' do
    before { ENV['FEATURE_ENABLED'] = 'true' }

    it { expect(ENV['FEATURE_ENABLED']).to eq 'true' }

    # run tests against enabled feature
  end

  # ENV resets
  it { expect(ENV['FEATURE_ENABLED']).to be_nil }

  # run tests when feature is disabled
end

before do
  allow(ENV).to receive(:[]).and_call_original
  allow(ENV).to receive(:[]).with('FEATURE_ENABLED').and_return('true')
end


before do
  stub_const('ENV', ENV.to_hash.merge('FEATURE_ENABLED' => 'true'))
end


around do |example|
  ENV['FEATURE_ENABLED'] = 'true'

  example.run

  ENV['FEATURE_ENABLED'] = nil
end


# https://github.com/thoughtbot/climate_control
around do |example|
  ClimateControl.modify FEATURE_ENABLED: 'true' do
    example.run
  end
end


# https://github.com/ljkbennett/stub_env
before do
  stub_env('key', 'value')
end