rpl.rb/spec/language_trig_spec.rb

# coding: utf-8
# frozen_string_literal: true

require 'minitest/autorun'

require 'rpl'
require 'rpl/types'

class TesttLanguageOperations < MiniTest::Test
  include Types

  def test_pi
    interpreter = Rpl.new
    interpreter.run 'pi'
    assert_equal [RplNumeric.new( BigMath.PI( RplNumeric.precision ) )],
                 interpreter.stack
  end

  def test_sin
    interpreter = Rpl.new
    interpreter.run '3 sin'
    assert_equal [RplNumeric.new( BigMath.sin( BigDecimal( 3 ), RplNumeric.precision ) )],
                 interpreter.stack
  end

  def test_asin
    interpreter = Rpl.new
    interpreter.run '1 asin pi 2 / =='
    assert_equal [RplBoolean.new( true )],
                 interpreter.stack
  end

  def test_cos
    interpreter = Rpl.new
    interpreter.run '3 cos'
    assert_equal [RplNumeric.new( BigMath.cos( BigDecimal( 3 ), RplNumeric.precision ) )],
                 interpreter.stack
  end

  def test_acos
    interpreter = Rpl.new
    interpreter.run '0 acos pi 2 / =='
    assert_equal [RplBoolean.new( true )],
                 interpreter.stack
  end

  def test_tan
    interpreter = Rpl.new
    interpreter.run '0 tan 0 =='
    assert_equal [RplBoolean.new( true )],
                 interpreter.stack
  end

  def test_atan
    interpreter = Rpl.new
    interpreter.run '1 atan'
    assert_equal [RplNumeric.new( BigMath.atan( BigDecimal( 1 ), RplNumeric.precision ) )],
                 interpreter.stack
  end

  def test_d2r
    interpreter = Rpl.new
    interpreter.run '90 d→r'
    assert_equal [RplNumeric.new( BigMath.PI( RplNumeric.precision ) / 2 )],
                 interpreter.stack
  end

  def test_r2d
    interpreter = Rpl.new
    interpreter.run 'pi r→d'
    assert_equal [RplNumeric.new( 180 )],
                 interpreter.stack
  end
end