fraction_tests.rb

class FractionsParsingTest < Test::Unit::TestCase
  def test_complex_fractions
    result = parse('(((x+2)(x-3)) / ((x-2)(x+2))) / (((x-1)(x-1))/((x-1)(x+1)))')
    expected = '\dfrac{(x+2)(x-3)}{(x-2)(x+2)}\ \div\ \dfrac{(x-1)(x-1)}{(x-1)(x+1)}'
    assert_equal expected, result
  end

  def test_single_complex_fraction
    result = parse('(x^2+3) / (x^2-3)')
    expected = '\dfrac{x^2+3}{x^2-3}'
    assert_equal expected, result
  end

  def test_simple_fractions
    result = parse('(x^2 -6+4)/(x^3)/(x^4)')
    expected = '\dfrac{x^2-6+4}{\dfrac{x^3}{x^4}}'
    assert_equal expected, result
  end

  def test_simple_fraction
    result = parse('x/y')
    expected = '\dfrac{x}{y}'
    assert_equal expected, result
  end
end