class RSpec::Mocks::InstanceMethodStasher

@private

Public Class Methods

new(klass, method) click to toggle source
# File lib/rspec/mocks/instance_method_stasher.rb, line 5
def initialize(klass, method)
  @klass = klass
  @method = method

  @method_is_stashed = false
end

Public Instance Methods

method_is_stashed?() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 13
def method_is_stashed?
  @method_is_stashed
end
restore() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 81
def restore
  return unless @method_is_stashed

  if @klass.__send__(:method_defined?, @method)
    @klass.__send__(:undef_method, @method)
  end
  @klass.__send__(:alias_method, @method, stashed_method_name)
  @klass.__send__(:remove_method, stashed_method_name)
  @method_is_stashed = false
end
stash() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 18
def stash
  return if !method_defined_directly_on_klass? || @method_is_stashed

  @klass.__send__(:alias_method, stashed_method_name, @method)
  @method_is_stashed = true
end
stashed_method_name() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 76
def stashed_method_name
  "obfuscated_by_rspec_mocks__#{@method}"
end

Private Instance Methods

method_defined_directly_on_klass?() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 28
def method_defined_directly_on_klass?
  method_defined_on_klass? && method_owned_by_klass?
end
method_defined_on_klass?(klass = @klass) click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 33
def method_defined_on_klass?(klass = @klass)
  klass.method_defined?(@method) || klass.private_method_defined?(@method)
end
method_owned_by_klass?() click to toggle source

@private

# File lib/rspec/mocks/instance_method_stasher.rb, line 39
def method_owned_by_klass?
  owner = @klass.instance_method(@method).owner

  # On Ruby 2.0.0+ the owner of a method on a class which has been
  # `prepend`ed may actually be an instance, e.g.
  # `#<MyClass:0x007fbb94e3cd10>`, rather than the expected `MyClass`.
  owner = owner.class unless owner.is_a? Class

  # On 1.8 (and some 1.9s -- e.g. rubinius) aliased methods
  # can report the wrong owner. Example:
  # class MyClass
  #   class << self
  #     alias alternate_new new
  #   end
  # end
  #
  # MyClass.owner(:alternate_new) returns `Class` on 1.8,
  # but we need to consider the owner to be `MyClass` because
  # it is not actually available on `Class` but is on `MyClass`.
  # Hence, we verify that the owner actually has the method defined.
  # If the given owner does not have the method defined, we assume
  # that the method is actually owned by @klass.
  owner == @klass || !(method_defined_on_klass?(owner))
end