Cleaning up and writing tests

game/planet.rb

@@ -5,11 +5,28 @@ PLANET_PRODUCTION_RESOURCES = [:ships]
 # This class holds information about a planet.
 class Planet
   attr_reader :owner
+
   # Create a planet
+  #
+  # @param random [Random] The random generator for the game (ensures seeds can be duplicated)
   def initialize(random)
     @random = random
     @prod_rate = @random.rand
     @resource = PLANET_PRODUCTION_RESOURCES[(@random.rand * PLANET_PRODUCTION_RESOURCES.length).floor]
     @owner = nil
   end
+
+  # Change the ownership of a planet. Should check for things like the planet
+  # has no defenders left and other fun stuff (later)
+  #
+  # @param owner [Player] The owner of the planet
+  # @return [Boolean] If the operation was successful or not
+  def change_owner(owner)
+    # For now only unclaimed planets can be owned
+    if @owner.nil?
+      @owner = owner
+      return true
+    end
+    return false
+  end
 end