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require "helper"
module Nokogiri
module XML
class TestXPath < Nokogiri::TestCase
# ** WHY ALL THOSE _if Nokogiri.uses_libxml?_ **
# Hi, my dear readers,
#
# After reading these tests you may be wondering why all those ugly
# if Nokogiri.uses_libxml? sparsed over the whole document. Well, let
# me explain it. While using XPath in Java, you need the extension
# functions to be in a namespace. This is not required by XPath, afaik,
# but it is an usual convention though.
#
# Yours truly,
#
# The guy whose headaches belong to Nokogiri JRuby impl.
def setup
super
@xml = Nokogiri::XML.parse(File.read(XML_FILE), XML_FILE)
@handler = Class.new {
attr_reader :things
def initialize
@things = []
end
def thing thing
@things << thing
thing
end
def another_thing thing
@things << thing
thing
end
def returns_array node_set
@things << node_set.to_a
node_set.to_a
end
def my_filter set, attribute, value
set.find_all { |x| x[attribute] == value }
end
def saves_node_set node_set
@things = node_set
end
def value
123.456
end
def anint
1230456
end
}.new
end
def test_variable_binding
assert_equal 4, @xml.xpath('//address[@domestic=$value]', nil, :value => 'Yes').length
end
def test_variable_binding_with_search
assert_equal 4, @xml.search('//address[@domestic=$value]', nil, :value => 'Yes').length
end
def test_unknown_attribute
assert_equal 0, @xml.xpath('//employee[@id="asdfasdf"]/@fooo').length
assert_nil @xml.xpath('//employee[@id="asdfasdf"]/@fooo')[0]
end
def test_boolean
assert_equal false, @xml.xpath('1 = 2')
end
def test_number
assert_equal 2, @xml.xpath('1 + 1')
end
def test_string
assert_equal 'foo', @xml.xpath('concat("fo", "o")')
end
def test_node_search_with_multiple_queries
xml = '<document>
<thing>
<div class="title">important thing</div>
</thing>
<thing>
<div class="content">stuff</div>
</thing>
<thing>
<p class="blah">more stuff</div>
</thing>
</document>'
node = Nokogiri::XML(xml).root
assert_kind_of Nokogiri::XML::Node, node
assert_equal 3, node.xpath('.//div', './/p').length
assert_equal 3, node.css('.title', '.content', 'p').length
assert_equal 3, node.search('.//div', 'p.blah').length
end
def test_css_search_with_ambiguous_integer_or_string_attributes
# https://github.com/sparklemotion/nokogiri/issues/711
html = "<body><div><img width=200>"
doc = Nokogiri::HTML(html)
assert_not_nil doc.at_css("img[width='200']")
assert_not_nil doc.at_css("img[width=200]")
end
def test_css_search_uses_custom_selectors_with_arguments
set = @xml.css('employee > address:my_filter("domestic", "Yes")', @handler)
assert set.length > 0
set.each do |node|
assert_equal 'Yes', node['domestic']
end
end
def test_css_search_uses_custom_selectors
set = @xml.xpath('//employee')
@xml.css('employee:thing()', @handler)
assert_equal(set.length, @handler.things.length)
assert_equal(set.to_a, @handler.things.flatten)
end
def test_search_with_css_query_uses_custom_selectors_with_arguments
set = @xml.search('employee > address:my_filter("domestic", "Yes")', @handler)
assert set.length > 0
set.each do |node|
assert_equal 'Yes', node['domestic']
end
end
def test_search_with_xpath_query_uses_custom_selectors_with_arguments
set = if Nokogiri.uses_libxml?
@xml.search('//employee/address[my_filter(., "domestic", "Yes")]', @handler)
else
@xml.search('//employee/address[nokogiri:my_filter(., "domestic", "Yes")]', @handler)
end
assert set.length > 0
set.each do |node|
assert_equal 'Yes', node['domestic']
end
end
def test_pass_self_to_function
set = if Nokogiri.uses_libxml?
@xml.xpath('//employee/address[my_filter(., "domestic", "Yes")]', @handler)
else
@xml.xpath('//employee/address[nokogiri:my_filter(., "domestic", "Yes")]', @handler)
end
assert set.length > 0
set.each do |node|
assert_equal 'Yes', node['domestic']
end
end
def test_custom_xpath_function_gets_strings
set = @xml.xpath('//employee')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[thing("asdf")]', @handler)
else
@xml.xpath('//employee[nokogiri:thing("asdf")]', @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal(['asdf'] * set.length, @handler.things)
end
def parse_params node
params={}
node.xpath('./param').each do |p|
subparams = parse_params p
if(subparams.length > 0)
if(not params.has_key? p.attributes['name'].value)
params[p.attributes['name'].value] = subparams
else
if(params[p.attributes['name'].value].is_a? Array)
params[p.attributes['name'].value] << subparams
else
value = params[p.attributes['name'].value]
params[p.attributes['name'].value] = [value,subparams]
end
end
else
params[p.attributes['name'].value]=p.text
end
end
params
end
# issue #741 (xpath() around 10x slower in JRuby)
def test_slow_jruby_xpath
skip("testing against an absolute time is brittle. help make this better! see https://github.com/sparklemotion/nokogiri/issues/741")
doc = Nokogiri::XML(File.open(XPATH_FILE))
start = Time.now
doc.xpath('.//category').each do |c|
c.xpath('programformats/programformat').each do |p|
p.xpath('./modules/module').each do |m|
parse_params m
end
end
end
stop = Time.now
elapsed_time = stop - start
time_limit = 20
assert_send [elapsed_time, :<, time_limit], "XPath is taking too long"
end
# issue #1109 (jruby impl's xpath() cache not being cleared on attr removal)
def test_xpath_results_cache_should_get_cleared_on_attr_removal
doc = Nokogiri::HTML('<html><div name="foo"></div></html>')
element = doc.at_xpath('//div[@name="foo"]')
element.remove_attribute('name')
assert_nil doc.at_xpath('//div[@name="foo"]')
end
# issue #1109 (jruby impl's xpath() cache not being cleared on attr update )
def test_xpath_results_cache_should_get_cleared_on_attr_update
doc = Nokogiri::HTML('<html><div name="foo"></div></html>')
element = doc.at_xpath('//div[@name="foo"]')
element['name'] = 'bar'
assert_nil doc.at_xpath('//div[@name="foo"]')
end
def test_custom_xpath_function_returns_string
if Nokogiri.uses_libxml?
result = @xml.xpath('thing("asdf")', @handler)
else
result = @xml.xpath('nokogiri:thing("asdf")', @handler)
end
assert_equal 'asdf', result
end
def test_custom_xpath_gets_true_booleans
set = @xml.xpath('//employee')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[thing(true())]', @handler)
else
@xml.xpath("//employee[nokogiri:thing(true())]", @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal([true] * set.length, @handler.things)
end
def test_custom_xpath_gets_false_booleans
set = @xml.xpath('//employee')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[thing(false())]', @handler)
else
@xml.xpath("//employee[nokogiri:thing(false())]", @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal([false] * set.length, @handler.things)
end
def test_custom_xpath_gets_numbers
set = @xml.xpath('//employee')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[thing(10)]', @handler)
else
@xml.xpath('//employee[nokogiri:thing(10)]', @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal([10] * set.length, @handler.things)
end
def test_custom_xpath_gets_node_sets
set = @xml.xpath('//employee/name')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[thing(name)]', @handler)
else
@xml.xpath('//employee[nokogiri:thing(name)]', @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal(set.to_a, @handler.things.flatten)
end
def test_custom_xpath_gets_node_sets_and_returns_array
set = @xml.xpath('//employee/name')
if Nokogiri.uses_libxml?
@xml.xpath('//employee[returns_array(name)]', @handler)
else
@xml.xpath('//employee[nokogiri:returns_array(name)]', @handler)
end
assert_equal(set.length, @handler.things.length)
assert_equal(set.to_a, @handler.things.flatten)
end
def test_custom_xpath_handler_is_passed_a_decorated_node_set
x = Module.new do
def awesome! ; end
end
util_decorate(@xml, x)
assert @xml.xpath('//employee/name')
@xml.xpath('//employee[saves_node_set(name)]', @handler)
assert_equal @xml, @handler.things.document
assert @handler.things.respond_to?(:awesome!)
end
def test_code_that_invokes_OP_RESET_inside_libxml2
doc = "<html><body id='foo'><foo>hi</foo></body></html>"
xpath = 'id("foo")//foo'
nokogiri = Nokogiri::HTML.parse(doc)
assert nokogiri.xpath(xpath)
end
def test_custom_xpath_handler_with_args_under_gc_pressure
# see http://github.com/sparklemotion/nokogiri/issues/#issue/345
tool_inspector = Class.new do
def name_equals(nodeset, name, *args)
nodeset.all? do |node|
args.each { |thing| thing.inspect }
node["name"] == name
end
end
end.new
xml = <<-EOXML
<toolbox>
#{"<tool name='hammer'/><tool name='wrench'/>" * 10}
</toolbox>
EOXML
doc = Nokogiri::XML xml
# long list of long arguments, to apply GC pressure during
# ruby_funcall argument marshalling
xpath = ["//tool[name_equals(.,'hammer'"]
1000.times { xpath << "'unused argument #{'x' * 1000}'" }
xpath << "'unused argument')]"
xpath = xpath.join(',')
assert_equal doc.xpath("//tool[@name='hammer']"), doc.xpath(xpath, tool_inspector)
end
def test_custom_xpath_without_arguments
if Nokogiri.uses_libxml?
value = @xml.xpath('value()', @handler)
else
value = @xml.xpath('nokogiri:value()', @handler)
end
assert_equal 123.456, value
end
def test_custom_xpath_without_arguments_returning_int
if Nokogiri.uses_libxml?
value = @xml.xpath('anint()', @handler)
else
value = @xml.xpath('nokogiri:anint()', @handler)
end
assert_equal 1230456, value
end
def test_custom_xpath_with_bullshit_arguments
xml = %q{<foo> </foo>}
doc = Nokogiri::XML.parse(xml)
foo = doc.xpath('//foo[bool_function(bar/baz)]', Class.new {
def bool_function(value)
true
end
}.new)
assert_equal foo, doc.xpath("//foo")
end
def test_node_set_should_be_decorated
# "called decorate on nil" exception in JRuby issue#514
process_output= <<~END
<test>
<track type="Image">
<Format>LZ77</Format>
</test>
END
doc = Nokogiri::XML.parse(process_output)
node = doc.xpath(%{//track[@type='Video']})
assert_equal "[]", node.xpath("Format").inspect
end
def test_very_specific_xml_xpath_making_problems_in_jruby
# manually merges pull request #681
xml_string = %q{<?xml version="1.0" encoding="UTF-8"?>
<ONIXMessage xmlns:elibri="http://elibri.com.pl/ns/extensions" release="3.0" xmlns="http://www.editeur.org/onix/3.0/reference">
<Product>
<RecordReference>a</RecordReference>
</Product>
</ONIXMessage>}
xml_doc = Nokogiri::XML(xml_string)
onix = xml_doc.children.first
assert_equal 'a', onix.at_xpath('xmlns:Product').at_xpath('xmlns:RecordReference').text
end
def test_xpath_after_attribute_change
xml_string = %q{<?xml version="1.0" encoding="UTF-8"?>
<mods version="3.0" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-0.xsd" xmlns="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<titleInfo>
<nonSort>THE</nonSort>
<title xml:lang="eng">ARTICLE TITLE HYDRANGEA ARTICLE 1</title>
<subTitle>SUBTITLE</subTitle>
</titleInfo>
<titleInfo lang="finnish">
<title>Artikkelin otsikko Hydrangea artiklan 1</title>
</titleInfo>
</mods>}
xml_doc = Nokogiri::XML(xml_string)
ns_hash = {'mods'=>'http://www.loc.gov/mods/v3'}
node = xml_doc.at_xpath('//mods:titleInfo[1]',ns_hash)
node['lang'] = 'english'
assert_equal 1, xml_doc.xpath('//mods:titleInfo[1]/@lang',ns_hash).length
assert_equal 'english', xml_doc.xpath('//mods:titleInfo[1]/@lang',ns_hash).first.value
end
def test_xpath_after_element_removal
xml_string = %q{<?xml version="1.0" encoding="UTF-8"?>
<mods version="3.0" xsi:schemaLocation="http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-0.xsd" xmlns="http://www.loc.gov/mods/v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<titleInfo>
<nonSort>THE</nonSort>
<title xml:lang="eng">ARTICLE TITLE HYDRANGEA ARTICLE 1</title>
<subTitle>SUBTITLE</subTitle>
</titleInfo>
<titleInfo lang="finnish">
<title>Artikkelin otsikko Hydrangea artiklan 1</title>
</titleInfo>
</mods>}
xml_doc = Nokogiri::XML(xml_string)
ns_hash = {'mods'=>'http://www.loc.gov/mods/v3'}
node = xml_doc.at_xpath('//mods:titleInfo[1]',ns_hash)
node.remove
assert_equal 1, xml_doc.xpath('//mods:titleInfo',ns_hash).length
assert_equal 'finnish', xml_doc.xpath('//mods:titleInfo[1]/@lang',ns_hash).first.value
end
def test_xpath_after_reset_doc_via_innerhtml
xml = <<~XML
<?xml version="1.0" encoding="UTF-8"?>
<document xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0">
<text:section name="Section1">[TEXT_INSIDE_SECTION]</text:section>
</document>
XML
doc = Nokogiri::XML(xml)
doc.inner_html = doc.inner_html
sections = doc.xpath(".//text:section[@name='Section1']")
assert_equal 1, sections.size
assert_equal "[TEXT_INSIDE_SECTION]", sections.first.text
end
def test_xpath_syntax_error
doc = Nokogiri::XML('<ns1:Root></ns1:Root>')
begin
doc.xpath('//ns1:Root')
rescue => e
assert_equal false, e.message.include?('0:0')
end
end
describe "nokogiri-builtin:css-class xpath function" do
before do
@doc = Nokogiri::HTML::Document.parse("<html></html>")
end
it "accepts exactly two arguments" do
assert_raise(Nokogiri::XML::XPath::SyntaxError) do
@doc.xpath("nokogiri-builtin:css-class()")
end
assert_raise(Nokogiri::XML::XPath::SyntaxError) do
@doc.xpath("nokogiri-builtin:css-class('one')")
end
assert_raise(Nokogiri::XML::XPath::SyntaxError) do
@doc.xpath("nokogiri-builtin:css-class('one', 'two', 'three')")
end
@doc.xpath("nokogiri-builtin:css-class('one', 'two')")
end
it "returns true if second arg is zero-length" do
assert(@doc.xpath("nokogiri-builtin:css-class('anything', '')"))
end
it "matches equal string" do
refute(@doc.xpath("nokogiri-builtin:css-class('asdf', 'asd')"))
refute(@doc.xpath("nokogiri-builtin:css-class('asdf', 'sdf')"))
assert(@doc.xpath("nokogiri-builtin:css-class('asdf', 'asdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('asdf', 'xasdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('asdf', 'asdfx')"))
end
it "matches start of string" do
refute(@doc.xpath("nokogiri-builtin:css-class('asdf qwer', 'asd')"))
assert(@doc.xpath("nokogiri-builtin:css-class('asdf qwer', 'asdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('asdf qwer', 'asdfg')"))
end
it "matches end of string" do
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf', 'sdf')"))
assert(@doc.xpath("nokogiri-builtin:css-class('qwer asdf', 'asdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf', 'xasdf')"))
end
it "matches middle of string" do
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf zxcv', 'xasdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf zxcv', 'asd')"))
assert(@doc.xpath("nokogiri-builtin:css-class('qwer asdf zxcv', 'asdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf zxcv', 'sdf')"))
refute(@doc.xpath("nokogiri-builtin:css-class('qwer asdf zxcv', 'asdfx')"))
end
# see xmlIsBlank_ch()
[" ", "\t", "\n", "\r"].each do |ws|
it "only matches complete whitespace-delimited words (#{sprintf("0x%02X", ws.bytes.first)})" do
assert(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'qwer')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'q')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'qw')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'qwe')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'w')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'we')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'wer')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'e')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'er')"))
refute(@doc.xpath("nokogiri-builtin:css-class('a#{ws}qwer#{ws}b', 'r')"))
end
end
end
describe "jruby inferring XPath functions from the handler methods" do
it "should not get confused simply by a string similarity" do
# https://github.com/sparklemotion/nokogiri/pull/1890
# this describes a bug where XmlXpathContext naively replaced query substrings using method names
handler = Class.new do
def collision(nodes)
nil
end
end.new
found_by_id = @xml.xpath("//*[@id='partial_collision_id']", handler)
assert_equal 1, found_by_id.length
end
it "handles multiple handler function calls" do
# test that jruby handles this case identically to C
result = @xml.xpath('//employee[thing(.)]/employeeId[another_thing(.)]', @handler)
assert_equal(5, result.length)
assert_equal(10, @handler.things.length)
end
it "doesn't get confused by an XPath function, flavor 1" do
# test that it doesn't get confused by an XPath function
result = @xml.xpath('//employee[thing(.)]/employeeId[last()]', @handler)
assert_equal(5, result.length)
assert_equal(5, @handler.things.length)
end
it "doesn't get confused by an XPath function, flavor 2" do
# test that it doesn't get confused by an XPath function
result = @xml.xpath('//employee[last()]/employeeId[thing(.)]', @handler)
assert_equal(1, result.length)
assert_equal(1, @handler.things.length)
end
end
end
end
end
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