gistfile1.rb

require 'nokogiri'
require 'test/unit'

class TestFoo < Test::Unit::TestCase
  def setup
    @doc = Nokogiri::XML(<<-eoxml)
    <SIF_Message>
      <SIF_Ack>
        <SIF_Header>
          <SIF_SourceId>Default Server</SIF_SourceId>
        </SIF_Header>
      </SIF_Ack>
    </SIF_Message>
    eoxml
  end

  def test_equal
    source1 = @doc.at("//SIF_Header/SIF_SourceId/text()")
    source2 = (@doc/"//SIF_Header/SIF_SourceId/text()")
    source3 = @doc.search("//SIF_Header/SIF_SourceId/text()")

    assert_instance_of(Nokogiri::XML::Text, source1)
    assert_instance_of(Nokogiri::XML::NodeSet, source2)
    assert_instance_of(Nokogiri::XML::NodeSet, source3)

    [source1, source2, source3].each do |node|
      assert_equal('Default Server', source1.text)
    end

    ##
    # This fails with:
    #   1) Failure:
    # test_equal(TestFoo) [test.rb:30]:
    # <"Default Server"> expected but was
    # <#<Nokogiri::XML::Text:0x5cb714
    #  @document=
    #   #<Nokogiri::XML::Document:0x5cb7f0
    #    @decorators=nil,
    #    @node_cache=
    #     {2824624=>
    #       #<Nokogiri::XML::Element:0x5cb6d8
    #        @document=#<Nokogiri::XML::Document:0x5cb7f0 ...>>,
    #      2908976=>#<Nokogiri::XML::Text:0x5cb714 ...>}>>>.
    assert_equal('Default Server', source1)
  end
end