# Commands covered:  ::dom::nodeIterator
#
# This file contains a collection of tests for one or more of the 
# TclDOM commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#
# Copyright (c) 2008 Explain
# Copyright (c) 1999-2000 Ajuba Solutions
#
# $Id: iterator.test,v 1.4 2003/12/03 20:18:45 balls Exp $

package require tcltest
source [file join [tcltest::workingDirectory] tcldomutils.tcl]

testPackage dom

namespace eval ::dom::iteratorTest {
    namespace import -force ::tcltest::*

    proc IterateXML {xml showList} {
        set document [::dom::DOMImplementation parse $xml]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-show $showList]
	set result {}
	for {set i 0} {$i < 50} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		if {[dom::node cget $node -nodeName] != "#text"} {
			lappend result [dom::node cget $node -nodeName]
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	for {set i 0} {$i < 50} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		if {[dom::node cget $node -nodeName] != "#text"} {
			lappend result [dom::node cget $node -nodeName]
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	return $result
    }

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.<A>aaa<B>bbb</B><C>ccc<D>ddd</D>ccc2</C>aaa2</A></Test>}

    test iterator-1.1 {argument parsing} -constraints {dom_c} -body {
        list [catch {dom::nodeIterator} msg] $msg
} -result {1 {wrong # args: should be "dom::nodeIterator method handle ?arg ...?"}}
    test iterator-1.2 {argument parsing} -constraints {dom_c} -body {
        list [catch {dom::nodeIterator foo} msg] $msg
} -result {1 {bad method "foo": must be cget, configure, previousNode, or nextNode}}
    test iterator-1.3 {argument parsing} -constraints {dom_c} -body {
        list [catch {dom::nodeIterator cget blah} msg] $msg
} -result {1 {token not found}}

    test iterator-2.1 {iterator creation} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test></Test>}]
	set result [catch {dom::DocumentTraversal createNodeIterator $document} \
	    iterator]
	set handle [string range $iterator 0 7]
	list $result $handle
} -result {0 iterator}

    test iterator-2.2 {iterator creation} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test></Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result [catch {dom::nodeIterator nextNode $iterator} first]
	set handle [string range $first 0 3]
	list $result $handle
} -result {0 node}

    test iterator-3.1 {iterator cget -show} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document -show \
		[list element textNode]]
	set result [catch {::dom::nodeIterator cget $iterator -show} value]
	list $result $value
} -result {0 {element textNode}}

    test iterator-3.2 {iterator configure -show} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document -show \
		[list element textNode]]
	set result [catch {::dom::nodeIterator configure $iterator -show} value]
	list $result $value
} -result {0 {element textNode}}

    test iterator-3.3 {iterator configure -show readonly} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document -show \
		[list element textNode]]
	set result [catch {::dom::nodeIterator configure $iterator \
		-show [list element]} value]
	list $result $value
} -result {1 {no modification allowed error: an attempt was made to modify an object where modifications are not allowed}}

    test iterator-3.4 {iterator cget -filter} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result [catch {::dom::nodeIterator cget $iterator -filter} value]
	list $result $value
} -result {0 nodeFilter}

    test iterator-3.5 {iterator configure -filter} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result [catch {::dom::nodeIterator configure $iterator -filter} value]
	list $result $value
} -result {0 nodeFilter}

    test iterator-3.6 {iterator configure -filter readonly} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result [catch {::dom::nodeIterator configure $iterator \
		-filter someFilter} value]
	list $result $value
} -result {1 {no modification allowed error: an attempt was made to modify an object where modifications are not allowed}}

    test iterator-3.7 {iterator cget -expandEntities} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result [catch {::dom::nodeIterator cget $iterator \
		-expandEntities} value]
	list $result $value
} -result {0 0}

    test iterator-3.8 {iterator configure -expandEntities} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result [catch {::dom::nodeIterator configure $iterator \
		-expandEntities} value]
	list $result $value
} -result {0 0}

    test iterator-3.9 {iterator configure -expandEntities readonly} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?><A></A>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result [catch {::dom::nodeIterator configure $iterator \
		-expandEntities 1} value]
	list $result $value
} -result {1 {no modification allowed error: an attempt was made to modify an object where modifications are not allowed}}

    test iterator-4.1 {basic iteration} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		lappend result [dom::node cget $node -nodeType]
		lappend result [dom::node cget $node -nodeName]
		lappend result [dom::node cget $node -nodeValue]
	}
	set result	
} -result {document #document {} documentType Test {} element Test {} textNode #text {This } element b {} textNode #text is textNode #text text.}

    test iterator-4.2 {basic iteration with -show} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-show [list element textNode]]
	set result {}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		lappend result [dom::node cget $node -nodeType]
		lappend result [dom::node cget $node -nodeName]
		lappend result [dom::node cget $node -nodeValue]
	}
	set result	
} -result {element Test {} textNode #text {This } element b {} textNode #text is textNode #text text.}

    test iterator-4.3 {basic reverse iteration} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		lappend result [dom::node cget $node -nodeType]
		lappend result [dom::node cget $node -nodeName]
		lappend result [dom::node cget $node -nodeValue]
	}
	set result	
} -result {textNode #text text. textNode #text is element b {} textNode #text {This } element Test {} documentType Test {} document #document {}}

    test iterator-4.4 {basic reverse iteration with -show} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-show [list element textNode]]
	set result {}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	for {set i 0} {$i < 9} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		lappend result [dom::node cget $node -nodeType]
		lappend result [dom::node cget $node -nodeName]
		lappend result [dom::node cget $node -nodeValue]
	}
	set result	
} -result {textNode #text text. textNode #text is element b {} textNode #text {This } element Test {}}

    test iterator-4.5 {complex iteration} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {#document Test Test {This } b is text. A aaa B bbb C ccc D ddd ccc2 aaa2}

    test iterator-4.6 {complex iteration} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {aaa2 ccc2 ddd D ccc C bbb B aaa A text. is b {This } Test Test #document}

    test iterator-4.7 {basic iteration both directions} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	set node [dom::nodeIterator nextNode $iterator]
	lappend result [dom::node cget $node -nodeName]
	set node [dom::nodeIterator previousNode $iterator]
	lappend result [dom::node cget $node -nodeName]
	set result	
} -result {#document #document}

    test iterator-4.8 {backup before start of list} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	set node [dom::nodeIterator previousNode $iterator]
	set	node
} -result {}

    test iterator-4.9 {backup before start of list then forward} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.</Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	set node [dom::nodeIterator previousNode $iterator]
	set node [dom::nodeIterator previousNode $iterator]
	set node [dom::nodeIterator previousNode $iterator]
	set node [dom::nodeIterator previousNode $iterator]
	set node [dom::nodeIterator nextNode $iterator]
	lappend result [dom::node cget $node -nodeName]
	set	result
} -result {#document}

    test iterator-4.10 {inserts while iterating} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
			if {$name == "A"} {
				set new [dom::document createTextNode $document "New Text"]
				dom::node insertBefore $node $new \
					[dom::node cget $node -firstChild]
			}
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {#document Test Test {This } b is text. A {New Text} aaa B bbb C ccc D ddd ccc2 aaa2}

    test iterator-4.11 {deletions while iterating} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
			if {$name == "A"} {
				dom::node removeChild $node [dom::node cget $node -firstChild]
			}
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {#document Test Test {This } b is text. A B bbb C ccc D ddd ccc2 aaa2}

    test iterator-4.12 {reference node deletion while iterating} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
			if {$name == "B"} {
				dom::node removeChild [dom::node cget $node -parent] $node
			}
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {#document Test Test {This } b is text. A aaa B C ccc D ddd ccc2 aaa2}

    test iterator-4.13 {reference node deletion while iterating II} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
			if {$name == "C"} {
				set nodeToDelete $node
			} elseif {$name == "D"} {
				dom::node removeChild [dom::node cget $nodeToDelete -parent] \
					$nodeToDelete
			}
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {#document Test Test {This } b is text. A aaa B bbb C ccc D aaa2}

    test iterator-4.14 {deletion of trailing reference node} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse {<?xml version="1.0"?>
<!DOCTYPE Test><Test>xxx<A/></Test>}]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result {}
	set node {}
	for {set i 0} {$i < 9} {incr i} {
		set refNode $node
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	set node [dom::nodeIterator previousNode $iterator]
	dom::node removeChild [dom::node cget $refNode -parent] $refNode
	set node [dom::nodeIterator previousNode $iterator]
	lappend result [dom::node cget $node -nodeName]
	set result
} -result {Test}

    test iterator-4.15 {complex iteration with filter} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		set value [dom::node cget $node -nodeValue]
		if {$value == "aaa"} {
			return $::dom::reject 
		} else {
			return $::dom::accept 
		}
	}

        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	rename nodeFilter {}
	set result	
} -result {#document Test Test {This } b is text. A B bbb C ccc D ddd ccc2 aaa2}

    test iterator-4.16 {complex iteration} -constraints {dom_c} -body {
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-show [list document textNode]]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	set result	
} -result {aaa2 ccc2 ddd ccc bbb aaa text. is {This } #document}

    test iterator-4.17 {complex iteration} -constraints {dom_c} -body {
	set xml1 {<?xml version="1.0"?><!DOCTYPE Test><A>a<B>b<C>c<D>d</D></C></B></A>}
	IterateXML $xml1 [list document element]
} -result {#document A B C D D C B A #document}

    test iterator-4.18 {complex iteration} -constraints {dom_c} -body {
	set xml1 {<?xml version="1.0"?><!DOCTYPE Test><Test><A>a</A><B>b</B><C>c</C><D>d</D></Test>}
	IterateXML $xml1 [list document element]
} -result {#document Test A B C D D C B A Test #document}

    test iterator-4.19 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test A a B b C c D d d D c C b B a A Test #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>test<A><B><C><D><E>eee</E><F>fff</F><G>ggg</G></D>ccc<H><I>iii</I><J>jjj</J><K>kkk</K></H>ccc2</C></B></A></Test>}

    test iterator-4.20 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test test A B C D E eee F fff G ggg ccc H I iii J jjj K kkk ccc2 ccc2 kkk K jjj J iii I H ccc ggg G fff F eee E D C B A test Test #document}

    test iterator-4.21 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document textNode]
} -result {#document test eee fff ggg ccc iii jjj kkk ccc2 ccc2 kkk jjj iii ccc ggg fff eee test #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test><Test><A>a<B>b<C>c<D>d<E>e<F>f</F></E></D></C></B></A></Test>}

    test iterator-4.22 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test A a B b C c D d E e F f f F e E d D c C b B a A Test #document}

    test iterator-4.23 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document textNode]
} -result {#document a b c d e f f e d c b a #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test><Test><A><B><C><D><E><F>f</F>e</E>d</D>c</C>b</B>a</A></Test>}

    test iterator-4.24 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document textNode]
} -result {#document f e d c b a a b c d e f #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>test
<A><B><C>
    <D2><D3><D><E>eee</E><F>fff</F><G>ggg</G></D></D3></D2>ccc
    <H2><H3><H><I>iii</I><J>jjj</J><K2><K3><K4><K>kkk</K></K4></K3></K2></H></H3></H2>ccc2
</C></B></A></Test>}

    test iterator-4.25 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test {test
} A B C {
    } D2 D3 D E eee F fff G ggg {ccc
    } H2 H3 H I iii J jjj K2 K3 K4 K kkk {ccc2
} {ccc2
} kkk K K4 K3 K2 jjj J iii I H H3 H2 {ccc
    } ggg G fff F eee E D D3 D2 {
    } C B A {test
} Test #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test><Test>test<A>a<B>b<C>c<D2><D3><D><E>e</E><F>f</F><G>g</G></D></D3></D2>c2<H2><H3><H><I>i</I><J>j</J><K2><K3><K4><K>k</K></K4></K3></K2></H></H3></H2>c3</C></B></A></Test>}

    test iterator-4.26 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test test A a B b C c D2 D3 D E e F f G g c2 H2 H3 H I i J j K2 K3 K4 K k c3 c3 k K K4 K3 K2 j J i I H H3 H2 c2 g G f F e E D D3 D2 c C b B a A test Test #document}

    test iterator-4.27 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document textNode]
} -result {#document test a b c e f g c2 i j k c3 c3 k j i c2 g f e c b a test #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test><Test><A><B><C><D><X><x1/><x2/><x3/><E><e1/><e2/><e3/></E>x</X><F><f1/><f2/>f</F></D><G><g1/><g2/>g</G></C><H><h1/><h2/>h</H></B></A></Test>}

    test iterator-4.28 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document element textNode]
} -result {#document Test A B C D X x1 x2 x3 E e1 e2 e3 x F f1 f2 f G g1 g2 g H h1 h2 h h h2 h1 H g g2 g1 G f f2 f1 F x e3 e2 e1 E x3 x2 x1 X D C B A Test #document}

    test iterator-4.29 {complex iteration} -constraints {dom_c} -body {
	IterateXML $xml1 [list document textNode]
} -result {#document x f g h h g f x #document}

    set xml1 {<?xml version="1.0"?>
<!DOCTYPE Test>
<Test>This <b>is</b>text.<A>aaa<B>bbb</B><C>ccc<D>ddd</D>ccc2</C>aaa2</A></Test>}

    test iterator-4.30 {complex iteration with filter} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		set value [dom::node cget $node -nodeName]
		if {$value == "A"} {
			return $::dom::reject 
		} else {
			return $::dom::accept
		}
	}

        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result {}
	for {set i 0} {$i < 40} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	rename nodeFilter {}
	set result	
} -result {#document Test Test {This } b is text. aaa B bbb C ccc D ddd ccc2 aaa2}

    test iterator-4.31 {complex reverse iteration} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		set value [dom::node cget $node -nodeName]
		if {$value == "A"} {
			return $::dom::reject 
		} else {
			return $::dom::accept
		}
	}
        set document [::dom::DOMImplementation parse $xml1] 
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set result {}
	for {set i 0} {$i < 30} {incr i} {
		set node [dom::nodeIterator nextNode $iterator]
		if {$node == ""} break;
	}
	for {set i 0} {$i < 30} {incr i} {
		set node [dom::nodeIterator previousNode $iterator]
		if {$node == ""} break;
		set name [dom::node cget $node -nodeName]
		if {$name != "#text"} {
			lappend result $name
		} else {
			lappend result [dom::node cget $node -nodeValue]
		}
	}
	rename nodeFilter {}
	set result	
} -result {aaa2 ccc2 ddd D ccc C bbb B aaa text. is b {This } Test Test #document}

    test iterator-5.1 {iterator destruction} -constraints {dom_c} -body {
	global xml1
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document]
	set result [catch {::dom::DocumentTraversal destroy $iterator} errmsg]
	list $result $errmsg
} -result {0 {}}

    test iterator-6.1 {delete document in filter proc} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		global document
		dom::DOMImplementation destroy $document
		return $::dom::accept
	}
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set node [::dom::nodeIterator nextNode $iterator]
	set result [catch {::dom::nodeIterator nextNode $iterator} errmsg]
	rename nodeFilter {}
	list $result $errmsg
} -result {0 {}}

    test iterator-6.2 {delete document in filter proc} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		global document
		dom::DOMImplementation destroy $document
		return $::dom::accept
	}
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set node [::dom::nodeIterator nextNode $iterator]
	set result [catch {::dom::node cget $node -nodeName} errmsg]
	rename nodeFilter {}
	list $result $errmsg
} -result {1 {token not found}}

    test iterator-6.3 {delete iterator in filter proc} -constraints {dom_c} -body {
	proc nodeFilter {node} {
		global iterator
		dom::DocumentTraversal destroy $iterator
		return $::dom::accept
	}
        set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	set node [::dom::nodeIterator nextNode $iterator]
	set result [catch {::dom::nodeIterator nextNode $iterator} errmsg]
	rename nodeFilter {}
	list $result $errmsg
} -result {1 {token not found}}

    test iterator-6.4 {recursively invoke filter proc} -constraints {dom_c} -match glob -body {
	proc nodeFilter {node} {
		global iterator
		set node [::dom::nodeIterator nextNode $iterator]
		return $::dom::accept
	}
	set document [::dom::DOMImplementation parse $xml1]
	set iterator [dom::DocumentTraversal createNodeIterator $document \
		-filter nodeFilter]
	expectError {
	    ::dom::nodeIterator nextNode $iterator
	}
    } -cleanup {
	rename nodeFilter {}
    } -result {too many nested calls * (infinite loop?)}

    ::tcltest::cleanupTests
}

namespace delete ::dom::iteratorTest

return