require_relative "helper"

class AddChange < MiniTest::Test
  include Ticker

  def setup
    @input = s(:statements, s(:class, :Space, s(:derives, nil), s(:statements, s(:function, :Integer, s(:name, :main), s(:parameters), s(:statements, s(:return, s(:operator_value, :+, s(:int, 5), s(:int, 7))))))))
    @state_events = {}
    @instruction_events = []
    super
  end

  def state_changed( a , b)
    @state_events[:state_changed] = [a , b]
  end

  def instruction_changed(was , is )
    @instruction_events << was
  end

  def test_state_change
    @interpreter.register_event :state_changed , self
    ticks 30
    assert @state_events[:state_changed]
    assert_equal 2 ,  @state_events[:state_changed].length
    assert_equal :running,  @state_events[:state_changed][0]
    @interpreter.unregister_event :state_changed , self
  end

  def test_instruction_events
    @interpreter.register_event :instruction_changed , self
    ticks 30
    assert_equal 17 ,  @instruction_events.length
    @interpreter.unregister_event :instruction_changed , self
  end

  def test_chain
    #show_ticks # get output of what is
    check_chain ["Branch","Label","LoadConstant","GetSlot","SetSlot",
     "LoadConstant","SetSlot","FunctionCall","Label","LoadConstant",
     "LoadConstant","OperatorInstruction","SetSlot","Label","FunctionReturn",
     "RegisterTransfer","Syscall","NilClass"]
  end

end