# coding: binary
# frozen_string_literal: false

require_relative 'rexml_test_utils'

require 'rexml/document'
require 'rexml/streamlistener'

module REXMLTests
  class BaseTester < Test::Unit::TestCase
    include REXMLTestUtils
    def test_empty
      return unless defined? @listener
      # Empty.
      t1 = %Q{<string></string>}
      assert_equal( "", @listener.parse( t1 ),
        "Empty" )
    end

    def test_space
      return unless defined? @listener
      # Space.
      t2 = %Q{<string>    </string>}
      assert_equal( "    ", @listener.parse( t2 ),
        "Space" )
    end

    def test_whitespace
      return unless defined? @listener
      # Whitespaces.
      t3 = %Q{<string>RE\n \t \n \t XML</string>}
      assert_equal( "RE\n \t \n \t XML", @listener.parse( t3 ),
        "Whitespaces" )
    end

    def test_leading_trailing_whitespace
      return unless defined? @listener
      # Leading and trailing whitespaces.
      t4 = %Q{<string>    REXML    </string>}
      assert_equal( "    REXML    ", @listener.parse( t4 ),
        "Leading and trailing whitespaces" )
    end

    def test_entity_reference
      return unless defined? @listener
      # Entity reference.
      t5 = %Q{<string>&lt;&gt;&amp;lt;&amp;gt;</string>}
      assert_equal( "<>&lt;&gt;", @listener.parse( t5 ),
        "Entity reference" )
    end

    def test_character_reference
      return unless defined? @listener
      # Character reference.
      t6 = %Q{<string>&#xd;</string>}
      assert_equal( "\r", @listener.parse( t6 ),
        "Character reference." )
    end

    def test_cr
      return unless defined? @listener
      # CR.
      t7 = %Q{<string> \r\n \r \n </string>}
      assert_equal( " \n \n \n ".unpack("C*").inspect,
        @listener.parse( t7 ).unpack("C*").inspect, "CR" )
    end

    # The accent bug, and the code that exhibits the bug, was contributed by
    # Guilhem Vellut
    class AccentListener
      def tag_start(name,attributes)
        #p name
        #p attributes
      end
      def tag_end(name)
        #p "/"+name
      end
      def xmldecl(a,b,c)
        #puts "#{a} #{b} #{c}"
      end
      def text(tx)
        #p tx
      end
    end

    def test_accents
      source = %[<?xml version="1.0" encoding="ISO-8859-1"?>
<g>
<f  a="\xE9" />
</g>]
      doc = REXML::Document.new( source )
      a = doc.elements['/g/f'].attribute('a')
                  if a.value.respond_to? :force_encoding
                    a.value.force_encoding('binary')
                  end
      assert_equal( "\xC3\xA9", a.value)
      doc = File::open(fixture_path("stream_accents.xml")) do |f|
        REXML::Document.parse_stream(f, AccentListener::new)
      end
    end
  end

  class MyREXMLListener
    include REXML::StreamListener

    def initialize
      @text = nil
    end

    def parse( stringOrReadable )
      @text = ""
      REXML::Document.parse_stream( stringOrReadable, self )
      @text
    end

    def text( text )
      @text << text
    end
  end

  class REXMLTester < BaseTester
    def setup
      @listener = MyREXMLListener.new
    end

    def test_character_reference_2
      t6 = %Q{<string>&#xd;</string>}
      assert_equal( t6.strip, REXML::Document.new(t6).to_s )
    end
  end
end