Contents

require 'test/unit'
require 'rockit/dparser'

class ATestPlusOperator < Test::Unit::TestCase
  PlusTestGrammar = Rockit::DParser::Grammar.new do
    start :S, [plus(:A)], value(0)
    term :A, ["a"]
  end

  Parser = PlusTestGrammar.new_parser


  def test_01_multiple_occurences
    (2..20).each do |i|
      ary = Parser.parse("a" * i)
      assert_equal((1..i).map {"a"}, ary)
    end
  end

  def test_02_single_occurence
    ary = Parser.parse("a")
    assert_equal(["a"], ary)
  end

  def test_03_no_occurence
    assert_raises(RuntimeError) {Parser.parse("b")}
  end

  PlusAndAstTestGrammar = Rockit::DParser::Grammar.new do
    start :S, [plus(:Digit)], ast(:S, 0)
    term :Digit, [/[0-9]/]
  end

  AstParser = PlusAndAstTestGrammar.new_parser

  def test_04_multiple_occurences_and_ast
    ast = AstParser.parse("7 5 6 9")
    assert_equal("S", ast.name)
    assert_kind_of(AstParser.astclass_of_name(:S), ast)
    assert_equal(1, ast.num_children)
    assert_equal(["7", "5", "6", "9"], ast[0])
  end

  def test_05_single_occurence_and_ast
    ast = AstParser.parse("7")
    assert_equal("S", ast.name)
    assert_kind_of(AstParser.astclass_of_name(:S), ast)
    assert_equal(1, ast.num_children)
    assert_equal(["7"], ast[0])
  end

  def test_06_no_occurence_and_ast
    assert_raises(RuntimeError) {AstParser.parse("b")}
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
rockit-0.7.1	tests/acceptance/rockit/dparser/atest_plus_operator.rb