merges r29282,r29283,r29284,r29285,r29286,r29287,r29288 and r29302 from trunk into ruby_1_9_2.

--
* test/rexml/: import REXML tests from
  http://www.germane-software.com/repos/rexml/trunk/test/.
  Many tests are failed temporary. I'll fix them quickly. Sorry.
--
* test/rexml/test_listener.rb: remove needless codes.
--
* test/rexml/: fix fixture data path. All REXML tests are worked.
--
* test/rexml/: untabify.
--
* test/rexml/test_core.rb: enable.
--
* test/rexml/test_sax.rb: don't use thread and sleep to avoid slow test.
--
* lib/rexml/xpath_parser.rb, test/rexml/test_xpath.rb:
  add missing method availability check. [ruby-core:32447]
  Reported by Wiebe Cazemier. Thanks!!!
--
Specify external encoding.

When external encoding is not specified, it uses default
external
encoding. But it depends the environment. So specify as
UTF-8 for
environments whose locale is not UTF-8.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@29915 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rexml/test_pullparser.rb

@@ -0,0 +1,100 @@
+require "test/unit/testcase"
+
+require 'rexml/parsers/pullparser'
+
+class PullParserTester < Test::Unit::TestCase
+  include REXML
+  def test_basics
+    source = '<?xml version="1.0"?>
+    <!DOCTYPE blah>
+    <a>foo &lt;<b attribute="value">bar</b> nooo</a>'
+    parser = REXML::Parsers::PullParser.new(source)
+    res = { :text=>0 }
+    until parser.empty?
+      results = parser.pull
+      res[ :xmldecl ] = true if results.xmldecl?
+      res[ :doctype ] = true if results.doctype?
+      res[ :a ] = true if results.start_element? and results[0] == 'a'
+      if results.start_element? and results[0] == 'b'
+        res[ :b ] = true
+        assert_equal 'value', results[1]['attribute']
+      end
+      res[ :text ] += 1 if results.text?
+    end
+    [ :xmldecl, :doctype, :a, :b ].each { |tag| 
+      assert res[tag] , "#{tag} wasn't processed"
+    }
+    assert_equal 4, res[ :text ]  
+  rescue ParseException 
+    puts $!
+  end
+
+  def test_bad_document
+    source = "<a><b></a>"
+    parser = REXML::Parsers::PullParser.new(source)
+    assert_raise(ParseException, "Parsing should have failed") { 
+      results = parser.pull while parser.has_next? 
+    }
+  end
+
+  def test_entity_replacement
+    source = '<!DOCTYPE foo [
+    <!ENTITY la "1234">
+    <!ENTITY lala "--&la;--">
+    <!ENTITY lalal "&la;&la;">
+    ]><a><la>&la;</la><lala>&lala;</lala></a>'
+    pp = REXML::Parsers::PullParser.new( source )
+    el_name = ''
+    while pp.has_next?
+      event = pp.pull
+      case event.event_type
+      when :start_element
+        el_name = event[0]
+      when :text
+        case el_name
+        when 'la'
+          assert_equal('1234', event[1])
+        when 'lala'
+          assert_equal('--1234--', event[1])
+        end
+      end
+    end
+  end
+
+  def test_peek_unshift
+    source = "<a><b/></a>"
+    pp = REXML::Parsers::PullParser.new(source)
+    # FINISH ME!
+  end
+
+  def test_inspect
+    xml =  '<a id="1"><b id="2">Hey</b></a>'
+    parser = Parsers::PullParser.new( xml )
+    while parser.has_next?
+      pull_event = parser.pull
+      if pull_event.start_element?
+        peek = parser.peek()
+        peek.inspect
+      end
+    end
+  end
+
+  def test_peek
+    xml =  '<a id="1"><b id="2">Hey</b></a>'
+    parser = Parsers::PullParser.new( xml )
+    names = %w{ a b }
+    while parser.has_next?
+      pull_event = parser.pull
+      if pull_event.start_element?
+        assert_equal( :start_element, pull_event.event_type )
+        assert_equal( names.shift, pull_event[0] )
+        if names[0] == 'b'
+          peek = parser.peek()
+          assert_equal( :start_element, peek.event_type )
+          assert_equal( names[0], peek[0] )
+        end
+      end
+    end
+    assert_equal( 0, names.length )
+  end
+end