gecko-dev/layout/html/tests/TestTextDOM.js

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JavaScript

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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* License.
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* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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*
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function testInsert(text)
{
text.deleteData(0, 99999);
// test insert into empty string
text.insertData(0, "word");
if (text.data != "word") {
dump("testInsert Error(0): '" + text.data + "' != word\n");
}
// test insert into middle of string
text.insertData(1, "Z");
if (text.data != "wZord") {
dump("testInsert Error(1): '" + text.data + "' != wZord\n");
}
text.insertData(4, "Z");
if (text.data != "wZorZd") {
dump("testInsert Error(2): '" + text.data + "' != wZorZd\n");
}
// test insert at end of string (== append)
text.insertData(99, "Z");
if (text.data != "wZorZdZ") {
dump("testInsert Error(3): '" + text.data + "' != wZorZdZ\n");
}
// test insert at start with illegal offset
text.insertData(-9000, "first");
if (text.data != "firstwZorZdZ") {
dump("testInsert Error(4): '" + text.data + "' != firstwZorZdZ\n");
}
}
function testAppend(text)
{
text.deleteData(0, 99999);
// test append into empty string
text.appendData("word");
if (text.data != "word") {
dump("testAppend Error(0): '" + text.data + "' != word\n");
}
// test append onto a non-empty string
text.appendData("word");
if (text.data != "wordword") {
dump("testAppend Error(1): '" + text.data + "' != wordword\n");
}
}
function testDelete(text)
{
text.deleteData(0, 99999);
text.appendData("wordwo3rd");
// test delete at start of word
text.deleteData(0, 4);
if (text.data != "wo3rd") {
dump("testDelete Error(0): '" + text.data + "' != wo3rd\n");
}
// test delete in middle of word
text.deleteData(2, 1);
if (text.data != "word") {
dump("testDelete Error(1): '" + text.data + "' != word\n");
}
// test delete at end of word
text.deleteData(2, 2);
if (text.data != "wo") {
dump("testDelete Error(2): '" + text.data + "' != wo\n");
}
// test delete of remaining data
text.deleteData(0, 2);
if (text.data != "") {
dump("testDelete Error(3): '" + text.data + "' != ''\n");
}
// test invalid delete's
text.appendData("word");
text.deleteData(-100, -10);
if (text.data != "word") {
dump("testDelete Error(4): '" + text.data + "' != word\n");
}
text.deleteData(-100, 0);
if (text.data != "word") {
dump("testDelete Error(5): '" + text.data + "' != word\n");
}
text.deleteData(0, -10);
if (text.data != "word") {
dump("testDelete Error(6): '" + text.data + "' != word\n");
}
text.deleteData(0, 0);
if (text.data != "word") {
dump("testDelete Error(7): '" + text.data + "' != word\n");
}
}
function testReplace(text)
{
text.deleteData(0, 99999);
text.appendData("word");
// replace nothing with something
text.replaceData(0, 0, "fish");
if (text.data != "fishword") {
dump("testReplace Error(0): '" + text.data + "' != fisword\n");
}
// replace something with nothing
text.replaceData(0, 4, "");
if (text.data != "word") {
dump("testReplace Error(1): '" + text.data + "' != word\n");
}
// replace nothing with something
text.replaceData(1, 1, "fish");
if (text.data != "wfishrd") {
dump("testReplace Error(2): '" + text.data + "' != wfishrd\n");
}
// replace something with nothing
text.replaceData(1, 4, "");
if (text.data != "wrd") {
dump("testReplace Error(3): '" + text.data + "' != wrd\n");
}
// replace something with something
text.replaceData(0, 1, "W");
text.replaceData(1, 1, "O");
text.replaceData(2, 1, "R");
text.replaceData(3, 1, "D");
if (text.data != "WORD") {
dump("testReplace Error(4): '" + text.data + "' != WORD\n");
}
// replace nothing with something
text.replaceData(4, 97, "FISH");
if (text.data != "WORDFISH") {
dump("testReplace Error(5): '" + text.data + "' != WORDFISH\n");
}
// test illegal count's/offset for replace
text.replaceData(-99, 4, "SWORD");
if (text.data != "SWORDFISH") {
dump("testReplace Error(6): '" + text.data + "' != SWORDFISH\n");
}
}
function testText(text)
{
testInsert(text);
testAppend(text);
testDelete(text);
testReplace(text);
}
function findText(container)
{
if (container.hasChildNodes()) {
// Find the first piece of text in the container or one of it's
// children and return it
var children = container.childNodes;
var length = children.length;
var child = null;
var count = 0;
while (count < length) {
child = children[count];
if (child.nodeType == Node.TEXT_NODE) {
return child;
}
var text = findText(child);
if (null != text) {
return text;
}
count++;
}
}
return null;
}
function findBody(node)
{
if (node.nodeType != Node.ELEMENT_NODE) {
return null;
}
var children = node.childNodes;
if (children == null) {
return null;
}
var length = children.length;
var child = null;
var count = 0;
while (count < length) {
child = children[count];
if (child.tagName == "BODY") {
dump("BODY found");
return child;
}
var body = findBody(child);
if (null != body) {
return body;
}
count++;
}
return null;
}
var body = findBody(document.documentElement)
var text = findText(body)
testText(text)
dump("Test finished\n");