require 'runit/testcase'
require 'msxml'
require 'msxml/loader'

class MsxmlTest < RUNIT::TestCase

  def assert_node_document(document)
    assert_not_nil(document)
    assert_equals(Msxml::NODE_DOCUMENT, document.nodeType)
  end

  def assert_node_element(element)
    assert_not_nil(element)
    assert_equals(Msxml::NODE_ELEMENT, element.nodeType)
  end

  def test_new
    doc = Msxml.new
    assert_node_document(doc)
  end

  def test_open
    assert_no_exception(Msxml::ParseError) do
      doc = Msxml.open('hello.xml')
      assert_node_document(doc)
    end

    ex = assert_exception(Msxml::ParseError) do
      doc = Msxml.open('not_exist.xml')
    end
    assert_equals("\nnot_exist.xml: システム エラー: -2146697210\n", ex.message)

    ex = assert_exception(Msxml::ParseError) do
      doc = Msxml.open('error.xml')
    end
    msg = "\nerror.xml:2:25: 終了タグ 'greeting' が開始タグ 'greting' と一致していません。\n"
    assert_equals(msg, ex.message)
  end
  
  def test_loadXML
    doc = Msxml.new
    doc.loadXML('<?xml version="1.0" encoding="Shift_JIS"?><greeting>Hello, world!</greeting>')
    assert_node_document(doc)
  end

  def test_childNodes
    loader = Msxml::Loader.new
    loader.xml = "<root><a></a><a></a></root>"
    count = 0
    for node in loader.doc.documentElement.childNodes
      assert_equals('a', node.nodeName)
      count += 1
    end
    assert_equals(2, count)
  end

  def test_node_element
    loader = Msxml::Loader.new
    testXML = '<lang name="ruby" type="script"><strong>Ruby</strong> is a scripting language.</lang>'
    loader.xml = testXML
    lang = loader.doc.documentElement
    assert_node_element(lang)

    assert_equals("lang", lang.nodeName)
    assert_equals("lang", lang.tagName)
    assert_equals("Ruby is a scripting language.", lang.text)
    assert_equals(testXML, lang.xml)

    assert_equals("ruby", lang.getAttribute("name"))
    assert_equals("script", lang.getAttribute("type"))
  end

  def test_getElementsByTagName
    doc = Msxml::open('books.xml')

    expected_names = [
      "新版 C言語プログラミングのエッセンス",
      "Designing Object-Oriented Software",
      "Using CRC Cards",
    ]
    expected_isbns = [
      "4-89052-868-7",
      "0-13-629825-7",
      "1-884842-07-0",
    ]

    count = 0
    for book in doc.documentElement.getElementsByTagName("本")
      name = book.getAttribute("名前")
      assert_equals(expected_names[count], name)
      isbn = book.getElementsByTagName("ISBN").item(0)
      assert_equals(expected_isbns[count], isbn.text)
      count += 1
    end
    assert_equals(expected_names.length, count)

  end

end

if __FILE__ == $0
  require 'runit/cui/testrunner'
  RUNIT::CUI::TestRunner.run(MsxmlTest.suite)
end