Module: IceAge

Extended by:
IceAge
Included in:
IceAge
Defined in:
lib/ice_age.rb,
lib/ice_age/version.rb

Constant Summary collapse

VERSION = 
'0.2.0'

Instance Method Summary collapse

Instance Method Details

#endure! ⇒ Object 



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# File 'lib/ice_age.rb', line 23

def endure!
  raise 'not frozen' unless frozen?

  changes = (Set.new(ENV.to_h) - Set.new(@env)).to_h.keys - WHITELIST
  unless changes.empty?
    msg = changes.map {|k| { k => { @env[k] => ENV[k] } }}.to_s
    raise 'ENV changed after freeze: ' + msg
  end
end

#freeze ⇒ Object 



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# File 'lib/ice_age.rb', line 7

def freeze
  raise 'already frozen' if frozen?

  @env = ENV.to_h.freeze
end

#frozen? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ice_age.rb', line 13

def frozen?
  !!@env
end

#restore ⇒ Object 



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# File 'lib/ice_age.rb', line 17

def restore
  raise 'not frozen' unless frozen?

  ENV.replace(@env)
end