gecko/parser/htmlparser/tests/mochitest/parser_datreader.js

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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
*
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Robert Sayre <sayrer@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK *****/
/**
* A test suite that runs WHATWG HTML parser tests.
* The tests are from html5lib.
*
* http://html5lib.googlecode.com/
*/
/**
* A few utility functions.
*/
function log(entry) {
}
function startsWith(s, s2) {
return s.indexOf(s2)==0;
}
function trimString(s) {
return(s.replace(/^\s+/,'').replace(/\s+$/,''));
}
/**
* Parses an individual testcase into an array containing the input
* string, a string representing the expected tree (DOM), and a list
* of error messages.
*
* @param A string containing a single testcase
*/
function parseTestcase(testcase) {
var lines = testcase.split("\n");
if (lines[0] != "#data") {
log(lines);
throw "Unknown test format."
}
var input = [];
var output = [];
var errors = [];
var currentList = input;
for each (var line in lines) {
if (line && !(startsWith(line, "#error") ||
startsWith(line, "#document") ||
startsWith(line, "#data"))) {
if (currentList == output && startsWith(line, "|")) {
currentList.push(line.substring(2));
} else {
currentList.push(line);
}
} else if (line == "#errors") {
currentList = errors;
} else if (line == "#document") {
currentList = output;
}
}
//logger.log(input.length, output.length, errors.length);
return [input.join("\n"), output.join("\n"), errors];
}
/**
* Sometimes the test output will depend on attribute order.
* This function fixes up that output to match, if possible.
*
* @param output The string generated from walking the DOM
* @param expected The expected output from the test case
*/
function reorderToMatchExpected(output, expected) {
var outputLines = output.split("\n");
var expectedLines = expected.split("\n");
// if the line count is different, they don't match anyway
if (expectedLines.length != outputLines.length)
return output;
var fixedOutput = [];
var outputAtts = {};
var expectedAtts = [];
printAtts = function() {
for each (var expectedAtt in expectedAtts) {
if (outputAtts.hasOwnProperty(expectedAtt)) {
fixedOutput.push(outputAtts[expectedAtt]);
} else {
// found a missing attribute
return false;
}
}
outputAtts = {};
expectedAtts = [];
return true;
}
for (var i=0; i < outputLines.length; i++) {
var outputLine = outputLines[i];
var expectedLine = expectedLines[i];
var inAttrList = false;
if (isAttributeLine(outputLine)) {
// attribute mismatch, return original
if (!isAttributeLine(expectedLine)) {
return output; // mismatch, return original
}
// stick these in a dictionary
inAttrList = true;
outputAtts[attName(outputLine)] = outputLine;
expectedAtts.push(attName(expectedLine));
} else {
if (inAttrList && !printAtts()) {
return output; // mismatch, return original
}
inAttrList = false;
fixedOutput.push(outputLine);
}
}
if (inAttrList && !printAtts()) {
return output; // mismatch, return original
}
return fixedOutput.join("\n");
}
function attName(line) {
var str = trimString(line);
return str.substring(0, str.indexOf("=\""));
}
function isAttributeLine(line) {
var str = trimString(line);
return (!startsWith(str, "<") && !startsWith(str, "\"") &&
(str.indexOf("=\"") > 0));
}
/**
* A generator function that accepts a list of strings. Each list
* member corresponds to the contents of a ".dat" file from the
* html5lib test suite.
*
* @param The list of strings
*/
function test_parser(testlist) {
for each (var testgroup in testlist) {
var tests = testgroup.split("#data\n");
tests = ["#data\n" + test for each(test in tests) if (test)];
for each (var test in tests) {
yield parseTestcase(test);
}
}
}
/**
* Transforms a DOM document to a string matching the format in
* the test cases.
*
* @param the DOM document
*/
function docToTestOutput(doc) {
var walker = doc.createTreeWalker(doc, NodeFilter.SHOW_ALL, null, true);
return addLevels(walker, "", "").slice(0,-1); // remove the last newline
}
function addLevels(walker, buf, indent) {
if(walker.firstChild()) {
do {
buf += indent;
switch (walker.currentNode.nodeType) {
case Node.ELEMENT_NODE:
buf += "<" + walker.currentNode.tagName.toLowerCase() + ">";
if (walker.currentNode.hasAttributes()) {
var attrs = walker.currentNode.attributes;
for (var i=0; i < attrs.length; ++i) {
buf += "\n" + indent + " " + attrs[i].name +
"=\"" + attrs[i].value +"\"";
}
}
break;
case Node.DOCUMENT_TYPE_NODE:
buf += "<!DOCTYPE " + walker.currentNode.name + ">";
break;
case Node.COMMENT_NODE:
buf += "<!-- " + walker.currentNode.nodeValue + " -->";
break;
case Node.TEXT_NODE:
buf += "\"" + walker.currentNode.nodeValue + "\"";
break;
}
buf += "\n";
buf = addLevels(walker, buf, indent + " ");
} while(walker.nextSibling());
walker.parentNode();
}
return buf;
}