Class: RBS::Test::Spy::WrapSpy

Inherits:
Object
  • Object
show all
Defined in:
lib/rbs/test/spy.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(object:, method_name:) ⇒ WrapSpy

Returns a new instance of WrapSpy.



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# File 'lib/rbs/test/spy.rb', line 244

def initialize(object:, method_name:)
  @callback = -> (_) { }
  @object = object
  @method_name = method_name
end

Instance Attribute Details

#callback ⇒ Object

Returns the value of attribute callback.



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# File 'lib/rbs/test/spy.rb', line 240

def callback
  @callback
end

#method_name ⇒ Object (readonly)

Returns the value of attribute method_name.



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# File 'lib/rbs/test/spy.rb', line 242

def method_name
  @method_name
end

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/rbs/test/spy.rb', line 241

def object
  @object
end

Instance Method Details

#wrapped_object ⇒ Object 



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# File 'lib/rbs/test/spy.rb', line 250

def wrapped_object
  spy = self

  Class.new(BasicObject) do
    define_method(:method_missing) do |name, *args, &block|
      spy.object.__send__(name, *args, &block)
    end

    define_method(spy.method_name, -> (*args, &block) {
      return_value = nil
      exception = nil
      block_calls = []

      spy_block = if block
                    Object.new.instance_eval do |fresh|
                      -> (*block_args) do
                        block_exn = nil
                        block_return = nil

                        begin
                          block_return = if self.equal?(fresh)
                                           # no instance eval
                                           block.call(*block_args)
                                         else
                                           self.instance_exec(*block_args, &block)
                                         end
                        rescue Exception => exn
                          block_exn = exn
                        end

                        block_calls << ArgumentsReturn.new(
                          arguments: block_args,
                          return_value: block_return,
                          exception: block_exn
                        )

                        if block_exn
                          raise block_exn
                        else
                          block_return
                        end
                      end.ruby2_keywords
                    end
                  end

      begin
        return_value = spy.object.__send__(spy.method_name, *args, &spy_block)
      rescue ::Exception => exn
        exception = exn
      end

      trace = CallTrace.new(
        method_name: spy.method_name,
        method_call: ArgumentsReturn.new(
          arguments: args,
          return_value: return_value,
          exception: exception,
          ),
        block_calls: block_calls,
        block_given: block != nil
      )

      spy.callback.call(trace)

      if exception
        spy.object.__send__(:raise, exception)
      else
        return_value
      end
    }.ruby2_keywords)
  end.new()
end