require "helper" class TestMemoryLeak < Nokogiri::TestCase def setup super @str = <
EOF end if ENV['NOKOGIRI_GC'] # turning these off by default for now def test_dont_hurt_em_why content = File.open("#{File.dirname(__FILE__)}/files/dont_hurt_em_why.xml").read ndoc = Nokogiri::XML(content) 2.times do ndoc.search('status text').first.inner_text ndoc.search('user name').first.inner_text GC.start end end class BadIO def read(*args) raise 'hell' end def write(*args) raise 'chickens' end end def test_for_mem_leak_on_io_callbacks io = File.open SNUGGLES_FILE Nokogiri::XML.parse(io) loop do Nokogiri::XML.parse(BadIO.new) rescue nil doc.write BadIO.new rescue nil end end def test_for_memory_leak begin # we don't use Dike in any tests, but requiring it has side effects # that can create memory leaks, and that's what we're testing for. require 'rubygems' require 'dike' # do not remove! count_start = count_object_space_documents xml_data = <<-EOS abc 1234 Zzz EOS 20.times do doc = Nokogiri::XML(xml_data) doc.xpath("//item") end 2.times { GC.start } count_end = count_object_space_documents assert((count_end - count_start) <= 2, "memory leak detected") rescue LoadError puts "\ndike is not installed, skipping memory leak test" end end def test_node_set_namespace_mem_leak xml = Nokogiri::XML "" ctx = Nokogiri::XML::XPathContext.new(xml) loop do ctx.evaluate("//namespace::*") end end def test_leak_on_node_replace loop do doc = Nokogiri.XML("") n = Nokogiri::XML::CDATA.new(doc, "bar") pivot = doc.root.children[0] pivot.replace(n) end end def test_sax_parser_context io = StringIO.new(@str) loop do Nokogiri::XML::SAX::ParserContext.new(@str) Nokogiri::XML::SAX::ParserContext.new(io) io.rewind Nokogiri::HTML::SAX::ParserContext.new(@str) Nokogiri::HTML::SAX::ParserContext.new(io) io.rewind end end class JumpingSaxHandler < Nokogiri::XML::SAX::Document def initialize(jumptag) @jumptag = jumptag super() end def start_element(name, attrs = []) throw @jumptag end end def test_jumping_sax_handler doc = JumpingSaxHandler.new(:foo) loop do catch(:foo) do Nokogiri::HTML::SAX::Parser.new(doc).parse(@str) end end end def test_in_context_parser_leak loop do doc = Nokogiri::XML::Document.new fragment1 = Nokogiri::XML::DocumentFragment.new(doc, '') node = fragment1.children[0] node.parse('') end end def test_in_context_parser_leak_ii loop { Nokogiri::XML('').root.parse('') } end def test_leak_on_xpath_string_function doc = Nokogiri::XML(@str) loop do doc.xpath('name(//node())') end end end # if NOKOGIRI_GC private def count_object_space_documents count = 0 ObjectSpace.each_object {|j| count += 1 if j.is_a?(Nokogiri::XML::Document) } count end end