require 'test/unit'
require 'rockit/dparser'
require 'calculator/multifunc_calculator'

require File.join(File.dirname(__FILE__), "calc_tests_common")

class ATestSamplesMultiFuncCalc < Test::Unit::TestCase
  include CalcTestsCommon

  def setup
    @grammar = Samples::MultiFuncCalcGrammar
    @calculator = Samples::MultiFuncCalculator.new
  end

  def test_10_eval
    assert_calc(8, "2^3")

    # The calculator is the same between successive calls to assert_calc so
    # the variables should retain their values
    assert_calc(1, "a = 1")
    assert_calc(-2, "b=-2")
    assert_calc(-1, "a+b")
    assert_calc(-97, "c = (3 - 100)")
    assert_calc(-2*-97+(4*1), "(b*c)+(4*a)")

    assert_calc(Math.log(2), "ln(2)")
  end

  def test_11_exponentiation_is_right_associative
    assert_calc(2**(3**3), "2^3^3")
  end

  def test_12_precedence_and_associativity
    assert_calc(15, "1+2*3^2-4")
  end
end