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Class: RSpec::Mocks::MethodReference Private

Do not use. This class is for internal use only.
Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
RSpec::Mocks::ClassNewMethodReference, RSpec::Mocks::InstanceMethodReference, RSpec::Mocks::ObjectMethodReference
Inherits: Object
Defined in: rspec-mocks/lib/rspec/mocks/method_reference.rb

Overview

Represents a method on an object that may or may not be defined. The method may be an instance method on a module or a method on any object.

Class Method Summary

Instance Attribute Summary

  • #defined? ⇒ Boolean readonly Internal use only

    A method is defined if we are able to get a ‘Method` object for it.

  • #implemented? ⇒ Boolean readonly Internal use only

    A method is implemented if sending the message does not result in a ‘NoMethodError`.

  • #unimplemented? ⇒ Boolean readonly Internal use only

    Returns true if we definitively know that sending the method will result in a ‘NoMethodError`.

Instance Method Summary

Class Method Details

.for(object_reference, method_name)

[ GitHub ] 

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 11



def self.for(object_reference, method_name)
  new(object_reference, method_name)
end


  








  

    .instance_method_visibility_for(klass, method_name)  
    Also known as: .method_defined_at_any_visibility?
  

  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 67



def self.instance_method_visibility_for(klass, method_name)
  if klass.public_method_defined?(method_name)
    :public
  elsif klass.private_method_defined?(method_name)
    :private
  elsif klass.protected_method_defined?(method_name)
    :protected
  end
end


  








  

    .method_defined_at_any_visibility?(klass, method_name)  
  



  

    

Alias for .instance_method_visibility_for.


  



  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 78



alias method_defined_at_any_visibility? instance_method_visibility_for


  








  

    .method_visibility_for(object, method_name)  
  

  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 81



def self.method_visibility_for(object, method_name)
  vis = instance_method_visibility_for(class << object; self; end, method_name)

  # If the method is not defined on the class, `instance_method_visibility_for`
  # returns `nil`. However, it may be handled dynamically by `method_missing`,
  # so here we check `respond_to` (passing false to not check private methods).
  #
  # This only considers the public case, but I don't think it's possible to
  # write `method_missing` in such a way that it handles a dynamic message
  # with private or protected visibility. Ruby doesn't provide you with
  # the caller info.
  return vis unless vis.nil?

  proxy = RSpec::Mocks.space.proxy_for(object)
  respond_to = proxy.method_double_if_exists_for_message(:respond_to?)

  visible = respond_to && respond_to.original_method.call(method_name) ||
    object.respond_to?(method_name)

  return :public if visible
end


  







Instance Attribute Details



  

    #defined?  ⇒ Boolean  (readonly)
  



  

    

A method is defined if we are able to get a ‘Method` object for it. In that case, we can assert against metadata like the arity.


  





  


  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 46



def defined?
  @object_reference.when_loaded do |m|
    method_defined?(m)
  end
end


  








  

    #implemented?  ⇒ Boolean  (readonly)
  



  

    

A method is implemented if sending the message does not result in a ‘NoMethodError`. It might be dynamically implemented by method_missing.


  





  


  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 23



def implemented?
  @object_reference.when_loaded do |m|
    method_implemented?(m)
  end
end


  








  

    #unimplemented?  ⇒ Boolean  (readonly)
  



  

    

Returns true if we definitively know that sending the method will result in a ‘NoMethodError`.



This is not simply the inverse of ‘implemented?`: there are cases when we don’t know if a method is implemented and both ‘implemented?` and unimplemented? will return false.


  





  


  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 35



def unimplemented?
  @object_reference.when_loaded do |_m|
    return !implemented?
  end

  # If it's not loaded, then it may be implemented but we can't check.
  false
end


  







Instance Method Details



  

    #original_method   (private)
  

  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 105



def original_method
  @object_reference.when_loaded do |m|
    self.defined? && find_method(m)
  end
end


  








  

    #visibility  
  

  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 57



def visibility
  @object_reference.when_loaded do |m|
    return visibility_from(m)
  end

  # When it's not loaded, assume it's public. We don't want to
  # wrongly treat the method as private.
  :public
end


  








  

    #with_signature {|Support::MethodSignature.new(original)| ... } 
  



  

    
  





  
Yields:





  [ GitHub ]


  

  


# File 'rspec-mocks/lib/rspec/mocks/method_reference.rb', line 52



def with_signature
  return unless (original = original_method)
  yield Support::MethodSignature.new(original)
end