Module: FakeEnv

Defined in:
lib/fake_env.rb,
lib/fake_env/version.rb

Constant Summary collapse

VERSION = 
'1.0.0'

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.actual ⇒ Object (readonly)

Returns the value of attribute actual.



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# File 'lib/fake_env.rb', line 6

def actual
  @actual
end

.actual_get_method ⇒ Object (readonly)

Returns the value of attribute actual_get_method.



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# File 'lib/fake_env.rb', line 6

def actual_get_method
  @actual_get_method
end

.actual_set_method ⇒ Object (readonly)

Returns the value of attribute actual_set_method.



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# File 'lib/fake_env.rb', line 6

def actual_set_method
  @actual_set_method
end

.fake ⇒ Object (readonly)

Returns the value of attribute fake.



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# File 'lib/fake_env.rb', line 6

def fake
  @fake
end

Class Method Details

.activate! ⇒ Object 



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# File 'lib/fake_env.rb', line 8

def activate!
  @actual = ENV.clone
  @fake = Hash.new do |fake, key|
    val = @actual[key]

    fake[key] = val ? val : val.clone
  end

  @actual_get_method ||= ENV.method(:[])
  @actual_set_method ||= ENV.method(:[]=)

  class << ENV
    def [](key)
      FakeEnv.fake[key]
    end

    def []=(key, val)
      FakeEnv.fake[key] = val.freeze
    end
  end
end

.deactivate! ⇒ Object 



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# File 'lib/fake_env.rb', line 30

def deactivate!
  class << ENV
    define_method(:[], FakeEnv.actual_get_method)
    define_method(:[]=, FakeEnv.actual_set_method)
  end
end

.within ⇒ Object 



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# File 'lib/fake_env.rb', line 37

def within
  activate!
  yield if block_given?
ensure
  deactivate!
end