robot.rb

class Robot

	attr_accessor :x, :y, :position

	def initialize
		@x = 0
		@y = 0
		@position = []
	end

	def position
		position = []
		position.push(@x)
		position.push(@y)
	end

	def move_left
		@x -= 10
	end

	def move_right
		@x += 10
	end

	def move_up
		@y += 10
	end

	def move_down
		@y -= 10
	end

end

Not actually10, i just wanted to see the test spit out the results and expectations side by side