File: test_xslt_transforms.rb

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# frozen_string_literal: true

require "helper"

class Nokogiri::TestCase
  describe Nokogiri::XSLT::Stylesheet do
    def check_params(result_doc, params)
      result_doc.xpath("/root/params/*").each do |p|
        assert_equal(p.content, params[p.name.intern])
      end
    end

    let(:doc) { Nokogiri::XML(File.open(XML_FILE)) }

    def test_class_methods
      style = Nokogiri::XSLT(File.read(XSLT_FILE))

      assert(result = style.apply_to(doc, ["title", '"Grandma"']))
      assert_match(%r{<h1>Grandma</h1>}, result)
    end

    def test_transform
      assert(style = Nokogiri::XSLT.parse(File.read(XSLT_FILE)))

      assert(result = style.apply_to(doc, ["title", '"Booyah"']))
      assert_match(%r{<h1>Booyah</h1>}, result)
      assert_match(%r{<th.*Employee ID</th>}, result)
      assert_match(%r{<th.*Name</th>}, result)
      assert_match(%r{<th.*Position</th>}, result)
      assert_match(%r{<th.*Salary</th>}, result)
      assert_match(%r{<td>EMP0003</td>}, result)
      assert_match(%r{<td>Margaret Martin</td>}, result)
      assert_match(%r{<td>Computer Specialist</td>}, result)
      assert_match(%r{<td>100,000</td>}, result)
      refute_match(/Dallas|Texas/, result)
      refute_match(/Female/, result)

      assert(result = style.apply_to(doc, ["title", '"Grandma"']))
      assert_match(%r{<h1>Grandma</h1>}, result)

      assert(result = style.apply_to(doc))
      assert_match(%r{<h1></h1>|<h1/>}, result)
    end

    def test_xml_declaration
      input_xml = <<~EOS
        <?xml version="1.0" encoding="utf-8"?>
        <report>
          <title>My Report</title>
        </report>
      EOS

      input_xsl = <<~EOS
        <?xml version="1.0" encoding="utf-8"?>
        <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
          <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
          <xsl:template match="/">
            <html>
              <head>
                <title><xsl:value-of select="report/title"/></title>
              </head>
              <body>
                <h1><xsl:value-of select="report/title"/></h1>
              </body>
            </html>
          </xsl:template>
        </xsl:stylesheet>
      EOS

      require "nokogiri"

      xml = ::Nokogiri::XML(input_xml)
      xsl = ::Nokogiri::XSLT(input_xsl)

      assert_includes(xsl.apply_to(xml), '<?xml version="1.0" encoding="utf-8"?>')
    end

    def test_transform_with_output_style
      xslt = if Nokogiri.jruby?
        Nokogiri::XSLT(<<~eoxslt)
          <?xml version="1.0" encoding="ISO-8859-1"?>

          <xsl:stylesheet version="1.0"
          xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
          <xsl:output method="text" version="1.0"
          encoding="iso-8859-1" indent="yes"/>

          <xsl:param name="title"/>

          <xsl:template match="/">
            <html>
            <body>
              <xsl:for-each select="staff/employee">
              <tr>
                <td><xsl:value-of select="employeeId"/></td>
                <td><xsl:value-of select="name"/></td>
                <td><xsl:value-of select="position"/></td>
                <td><xsl:value-of select="salary"/></td>
              </tr>
              </xsl:for-each>
            </body>
            </html>
          </xsl:template>

          </xsl:stylesheet>
        eoxslt
      else
        Nokogiri::XSLT(<<~eoxslt)
          <?xml version="1.0" encoding="ISO-8859-1"?>

          <xsl:stylesheet version="1.0"
          xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
          <xsl:output method="text" version="1.0"
          encoding="iso-8859-1" indent="yes"/>

          <xsl:param name="title"/>

          <xsl:template match="/">
            <html>
            <body>
              <xsl:for-each select="staff/employee">
              <tr>
                <td><xsl:value-of select="employeeId"/></td>
                <td><xsl:value-of select="name"/></td>
                <td><xsl:value-of select="position"/></td>
                <td><xsl:value-of select="salary"/></td>
              </tr>
              </xsl:for-each>
              </table>
            </body>
            </html>
          </xsl:template>

          </xsl:stylesheet>
        eoxslt
      end
      result = xslt.apply_to(doc, ["title", "foo"])
      refute_match(/<td>/, result)

      # the entity-form is for systems with this bug with Encodings.properties
      # https://issues.apache.org/jira/browse/XALANJ-2618
      # a.k.a. "Attempt to output character of integral value 48 that is not represented in specified output encoding of iso-8859-1."
      assert_match(
        /This is an adjacent|&#84;&#104;&#105;&#115;&#32;&#105;&#115;&#32;&#97;&#110;&#32;&#97;&#100;&#106;&#97;&#99;&#101;&#110;&#116;/, result
      )
    end

    def test_transform_arg_error
      assert(style = Nokogiri::XSLT(File.read(XSLT_FILE)))
      assert_raises(TypeError) do
        style.transform(doc, :foo)
      end
    end

    def test_transform_with_hash
      assert(style = Nokogiri::XSLT(File.read(XSLT_FILE)))
      result = style.transform(doc, { "title" => '"Booyah"' })
      assert_predicate(result, :html?)
      assert_equal("Booyah", result.at_css("h1").content)
    end

    def test_transform2
      assert(style = Nokogiri::XSLT(File.open(XSLT_FILE)))
      assert(result_doc = style.transform(doc))
      assert_predicate(result_doc, :html?)
      assert_equal("", result_doc.at_css("h1").content)

      assert(style = Nokogiri::XSLT(File.read(XSLT_FILE)))
      assert(result_doc = style.transform(doc, ["title", '"Booyah"']))
      assert_predicate(result_doc, :html?)
      assert_equal("Booyah", result_doc.at_css("h1").content)

      assert(result_string = style.apply_to(doc, ["title", '"Booyah"']))
      assert_equal(result_string, style.serialize(result_doc))
    end

    def test_transform_with_quote_params
      assert(style = Nokogiri::XSLT(File.open(XSLT_FILE)))
      assert(result_doc = style.transform(doc, Nokogiri::XSLT.quote_params(["title", "Booyah"])))
      assert_predicate(result_doc, :html?)
      assert_equal("Booyah", result_doc.at_css("h1").content)

      assert(style = Nokogiri::XSLT.parse(File.read(XSLT_FILE)))
      assert(result_doc = style.transform(doc, Nokogiri::XSLT.quote_params({ "title" => "Booyah" })))
      assert_predicate(result_doc, :html?)
      assert_equal("Booyah", result_doc.at_css("h1").content)
    end

    def test_exslt
      # see http://yokolet.blogspot.com/2010/10/pure-java-nokogiri-xslt-extension.html")
      skip_unless_libxml2("cannot get it working on JRuby")

      assert(doc = Nokogiri::XML.parse(File.read(EXML_FILE)))
      assert_predicate(doc, :xml?)

      assert(style = Nokogiri::XSLT.parse(File.read(EXSLT_FILE)))
      params = {
        p1: "xxx",
        p2: "x'x'x",
        p3: 'x"x"x',
        p4: '"xxx"',
      }
      result_doc = Nokogiri::XML.parse(style.apply_to(doc,
        Nokogiri::XSLT.quote_params(params)))

      assert_equal("func-result", result_doc.at("/root/function").content)
      assert_equal(3, result_doc.at("/root/max").content.to_i)
      if Nokogiri::VersionInfo.instance.libxslt_has_datetime?
        assert_match(
          /\d{4}-\d\d-\d\d([-|+]\d\d:\d\d)?/,
          result_doc.at("/root/date").content
        )
      end
      result_doc.xpath("/root/params/*").each do |p|
        assert_equal(p.content, params[p.name.intern])
      end
      check_params(result_doc, params)
      result_doc = Nokogiri::XML.parse(style.apply_to(doc,
        Nokogiri::XSLT.quote_params(params.to_a.flatten)))
      check_params(result_doc, params)
    end

    def test_xslt_paramaters
      # see http://yokolet.blogspot.com/2010/10/pure-java-nokogiri-xslt-extension.html")
      skip_unless_libxml2("cannot get it working on JRuby")

      xslt_str = <<~EOX
        <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
          <xsl:template match="/">
            <xsl:value-of select="$foo" />
          </xsl:template>
        </xsl:stylesheet>
      EOX

      xslt = Nokogiri::XSLT(xslt_str)
      doc = Nokogiri::XML("<root />")
      assert_match(/bar/, xslt.transform(doc, Nokogiri::XSLT.quote_params("foo" => "bar")).to_s)
    end

    def test_xslt_transform_error
      # see http://yokolet.blogspot.com/2010/10/pure-java-nokogiri-xslt-extension.html")
      skip_unless_libxml2("cannot get it working on JRuby")

      xslt_str = <<~EOX
        <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
          <xsl:template match="/">
            <xsl:value-of select="$foo" />
          </xsl:template>
        </xsl:stylesheet>
      EOX

      xslt = Nokogiri::XSLT(xslt_str)
      doc = Nokogiri::XML("<root />")
      assert_raises(RuntimeError) { xslt.transform(doc) }
    end

    def test_xslt_parse_error
      xslt_str = <<~EOX
        <xsl:stylesheet version="1.0"
         xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
          <!-- Not well-formed: -->
          <xsl:template match="/"/>
            <values>
              <xsl:for-each select="//*">
                <value>
                  <xsl:value-of select="@id"/>
                </value>
              </xsl:for-each>
            </values>
          </xsl:template>
        </xsl:stylesheet>}
      EOX
      assert_raises(RuntimeError) { Nokogiri::XSLT.parse(xslt_str) }
    end

    def test_passing_a_non_document_to_transform
      xsl = Nokogiri::XSLT('<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"></xsl:stylesheet>')
      assert_raises(ArgumentError) { xsl.transform("<div></div>") }
      assert_raises(ArgumentError) { xsl.transform(Nokogiri::HTML("").css("body")) }
    end

    def test_non_html_xslt_transform
      xml = Nokogiri.XML(<<~EOXML)
        <a>
          <b>
          <c>123</c>
            </b>
          </a>
      EOXML

      xsl = Nokogiri.XSLT(<<~EOXSL)
        <xsl:stylesheet version="1.0"
                        xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

          <xsl:output encoding="UTF-8" indent="yes" method="xml" />

          <xsl:template match="/">
            <a><xsl:value-of select="/a" /></a>
          </xsl:template>
        </xsl:stylesheet>
      EOXSL

      result = xsl.transform(xml)
      refute_predicate(result, :html?)
    end

    it "should not crash when given XPath 2.0 features" do
      #
      #  https://github.com/sparklemotion/nokogiri/issues/1802
      #
      #  note that here the XPath 2.0 feature is `decimal`.
      #  this test case is taken from the example provided in the original issue.
      #
      xml = <<~EOXML
        <?xml version="1.0" encoding="UTF-8"?>
        <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
                 xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
                 xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xsi:schemaLocation="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2">
          <cac:TaxTotal>
            <cbc:TaxAmount currencyID="EUR">48.00</cbc:TaxAmount>
          </cac:TaxTotal>
        </Invoice>
      EOXML

      xsl = <<~EOXSL
        <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
        <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                        xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
                        xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
                        xmlns:ubl="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2"
                        xmlns:xs="http://www.w3.org/2001/XMLSchema"
                        version="1.0">
          <xsl:template match="/">
            <xsl:apply-templates select="/" mode="qwerty"/>
          </xsl:template>
          <xsl:template match="/ubl:Invoice/cac:TaxTotal" priority="1001" mode="qwerty">
            <xsl:choose>
              <xsl:when test="(round(xs:decimal(child::cbc:TaxAmount)))"/>
            </xsl:choose>
          </xsl:template>
        </xsl:stylesheet>
      EOXSL

      doc = Nokogiri::XML(xml)
      xslt = Nokogiri::XSLT(xsl)
      exception = assert_raises(RuntimeError) do
        xslt.transform(doc)
      end
      assert_match(/decimal/, exception.message)
    end

    describe "DEFAULT_XSLT parse options" do
      it "is the union of DEFAULT_XML and libxslt's XSLT_PARSE_OPTIONS" do
        xslt_parse_options = Nokogiri::XML::ParseOptions.new.noent.dtdload.dtdattr.nocdata
        expected = Nokogiri::XML::ParseOptions::DEFAULT_XML | xslt_parse_options.options
        assert_equal(expected, Nokogiri::XML::ParseOptions::DEFAULT_XSLT)
      end

      it "parses docs the same as xsltproc" do
        skip_unless_libxml2("JRuby implementation disallows this edge case XSLT")

        # see https://github.com/sparklemotion/nokogiri/issues/1940
        xml = "<t></t>"
        xsl = <<~EOF
          <?xml version="1.0"?>
          <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
          <xsl:output method="text" omit-xml-declaration="no" />
            <xsl:template match="/">
              <xsl:text disable-output-escaping="yes"><![CDATA[<>]]></xsl:text>
            </xsl:template>
          </xsl:stylesheet>
        EOF

        doc = Nokogiri::XML(xml)
        stylesheet = Nokogiri::XSLT(xsl)

        # TODO: ideally I'd like to be able to access the parse options in the final object
        # assert_equal(Nokogiri::XML::ParseOptions::DEFAULT_XSLT, stylesheet.document.parse_options)

        result = stylesheet.transform(doc)
        assert_equal("<>", result.children.to_xml)
      end
    end

    describe "XSLT.quote_params" do
      it "returns quoted values" do
        assert_equal(["asdf", "'qwer'"], Nokogiri::XSLT.quote_params({ "asdf" => "qwer" }))
      end

      it "stringifies non-string keys and values" do
        assert_equal(["asdf", "'1234'"], Nokogiri::XSLT.quote_params({ asdf: 1234 }))
        assert_equal(["1234", "'asdf'"], Nokogiri::XSLT.quote_params({ 1234 => :asdf }))
      end

      it "handles multiple key-value pairs" do
        actual = Nokogiri::XSLT.quote_params({ "abcd" => "efgh", "ijkl" => "mnop" })
        expected = ["abcd", "'efgh'", "ijkl", "'mnop'"]
        assert_equal(expected, actual)
      end

      it "handles an array of pairs" do
        actual = Nokogiri::XSLT.quote_params(["abcd", "efgh", "ijkl", "mnop"])
        expected = ["abcd", "'efgh'", "ijkl", "'mnop'"]
        assert_equal(expected, actual)
      end

      it "handles double quotes" do
        assert_equal(["a", %{'"asdf"'}], Nokogiri::XSLT.quote_params({ "a" => %{"asdf"} }))
      end

      it "handles single quotes" do
        actual = Nokogiri::XSLT.quote_params({ "a" => %{'asdf'} })
        expected = ["a", %{concat('', "'", 'asdf', "'", '')}]
        assert_equal(expected, actual)

        actual = Nokogiri::XSLT.quote_params({ "a" => %{a'sd'f} })
        expected = ["a", %{concat('a', "'", 'sd', "'", 'f')}]
        assert_equal(expected, actual)
      end

      it "does not change the input parameters" do
        input_h = { "abcd" => "efgh", "ijkl" => "mnop" }
        expected_h = input_h.dup
        input_a = input_h.to_a.flatten
        expected_a = input_a.dup

        Nokogiri::XSLT.quote_params(input_h)
        assert_equal(expected_h, input_h)

        Nokogiri::XSLT.quote_params(input_a)
        assert_equal(expected_a, input_a)
      end
    end
  end
end