mediawiki-extensions-Visual.../tests/parser/parserTests.js

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/**
* Initial parser tests runner for experimental JS parser
*
* This pulls all the parserTests.txt items and runs them through the JS
* parser and JS HTML renderer. Currently no comparison is done on output,
* as a direct string comparison won't be very encouraging. :)
*
* Needs smarter compare, as well as search-y helpers.
*
* 2011-07-20 <brion@pobox.com>
*/
(function() {
//"use strict";
var fs = require('fs'),
path = require('path'),
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jsDiff = require('diff'),
HTML5 = require('html5').HTML5;
// @fixme wrap more or this setup in a common module
// Fetch up some of our wacky parser bits...
var basePath = path.join(path.dirname(path.dirname(process.cwd())), 'modules');
function _require(filename) {
return require(path.join(basePath, filename));
}
function _import(filename, symbols) {
var module = _require(filename);
symbols.forEach(function(symbol) {
global[symbol] = module[symbol];
});
}
// needed for html5 parser adapter
//var events = require('events');
// For now most modules only need this for $.extend and $.each :)
global.$ = require('jquery');
// hack for renderer
global.document = $('<div>')[0].ownerDocument;
var pj = path.join;
// Local CommonJS-friendly libs
global.PEG = _require(pj('parser', 'lib.pegjs.js'));
// Our code...
_import(pj('parser', 'mediawiki.parser.peg.js'), ['PegParser']);
_import(pj('parser', 'mediawiki.parser.environment.js'), ['MWParserEnvironment']);
_import(pj('parser', 'ext.cite.taghook.ref.js'), ['MWRefTagHook']);
_import(pj('parser', 'mediawiki.html5TokenEmitter.js'), ['FauxHTML5']);
_import(pj('parser', 'mediawiki.DOMPostProcessor.js'), ['DOMPostProcessor']);
// WikiDom and serializers
_require(pj('es', 'es.js'));
_require(pj('es', 'es.Html.js'));
_require(pj('es', 'serializers', 'es.AnnotationSerializer.js'));
_require(pj('es', 'serializers', 'es.HtmlSerializer.js'));
_require(pj('es', 'serializers', 'es.WikitextSerializer.js'));
_require(pj('es', 'serializers', 'es.JsonSerializer.js'));
// Preload the grammar file...
PegParser.src = fs.readFileSync(path.join(basePath, 'parser', 'pegParser.pegjs.txt'), 'utf8');
var parser = new PegParser();
var testFileName = '../../../../phase3/tests/parser/parserTests.txt'; // default
var testFileName2 = '../../../../tests/parser/parserTests.txt'; // Fallback. Not everyone fetch at phase3 level
if (process.argv.length > 2) {
// hack :D
testFileName = process.argv[2];
testFileName2 = null;
console.log(testFileName);
}
try {
var testParser = PEG.buildParser(fs.readFileSync('parserTests.pegjs', 'utf8'));
} catch (e) {
console.log(e);
}
var testFile;
try {
testFile = fs.readFileSync(testFileName, 'utf8');
} catch (e) {
// Try opening fallback file
if( testFileName2 !== '' ) {
try { testFile = fs.readFileSync( testFileName2, 'utf8' ); }
catch(e) { console.log(e); }
}
}
try {
var cases = testParser.parse(testFile);
} catch (e) {
console.log(e);
}
var articles = {};
function normalizeTitle(name) {
if (typeof name !== 'string') {
throw new Error('nooooooooo not a string');
}
name = name.replace(/[\s_]+/g, '_');
name = name.substr(0, 1).toUpperCase() + name.substr(1);
if (name === '') {
throw new Error('Invalid/empty title');
}
return name;
}
function fetchArticle(name) {
var norm = normalizeTitle(name);
if (norm in articles) {
return articles[norm];
}
}
function processArticle(item) {
var norm = normalizeTitle(item.title);
articles[norm] = item.text;
}
function nodeToHtml(node) {
return $('<div>').append(node).html();
}
var htmlparser = new HTML5.Parser();
/* Normalize the expected parser output by parsing it using a HTML5 parser and
* re-serializing it to HTML. Ideally, the parser would normalize inter-tag
* whitespace for us. For now, we fake that by simply stripping all newlines.
*/
function normalizeHTML(source) {
// TODO: Do not strip newlines in pre and nowiki blocks!
source = source.replace(/\n/g, '');
try {
htmlparser.parse('<body>' + source + '</body>');
return htmlparser.document
.getElementsByTagName('body')[0]
.innerHTML
// a few things we ignore for now..
.replace(/(title|class|rel)="[^"]+"/g, '');
} catch(e) {
console.log("normalizeHTML failed on" +
source + " with the following error: " + e);
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console.trace();
return source;
}
}
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// Specialized normalization of the wiki parser output, mostly to ignore a few
// known-ok differences.
function normalizeOut ( out ) {
// TODO: Do not strip newlines in pre and nowiki blocks!
return out.replace(/\n| data-[a-zA-Z]+="[^">]+"/g, '')
.replace(/<!--.*?-->\n?/gm, '');
}
function formatHTML ( source ) {
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// Quick hack to insert newlines before some block level start tags
return source.replace(/(?!^)<((div|dd|dt|li|p|table|tr|td|tbody|dl|ol|ul)[^>]*)>/g,
'\n<$1>');
}
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var passedTests = 0,
failParseTests = 0,
failTreeTests = 0,
failOutputTests = 0;
function processTest(item) {
var tokenizer = new FauxHTML5.Tokenizer(),
postProcessor = new DOMPostProcessor();
if (!('title' in item)) {
console.log(item);
throw new Error('Missing title from test case.');
}
if (!('input' in item)) {
console.log(item);
throw new Error('Missing input from test case ' + item.title);
}
if (!('result' in item)) {
console.log(item);
throw new Error('Missing input from test case ' + item.title);
}
function printTitle() {
console.log('=====================================================');
console.log(item.title);
console.log(item.comments.join('\n'));
console.log("INPUT:");
console.log(item.input + "\n");
}
parser.parseToTree(item.input + "\n", function(tokens, err) {
if (err) {
printTitle();
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failParseTests++;
console.log('PARSE FAIL', err);
} else {
var environment = new MWParserEnvironment({
tagHooks: {
'ref': MWRefTagHook,
'references': MWReferencesTagHook
}
});
//var res = es.HtmlSerializer.stringify(tokens,environment);
//console.log(JSON.stringify(tokens));
// Build a DOM tree from tokens using the HTML tree
// builder/parser.
processTokens(tokens, tokenizer);
// Perform post-processing on DOM.
postProcessor.doPostProcess(tokenizer.parser.document);
// And serialize the result.
var out = tokenizer.parser.document
.getElementsByTagName('body')[0]
.innerHTML;
if ( err ) {
printTitle();
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failTreeTests++;
console.log('RENDER FAIL', err);
return;
}
var normalizedOut = normalizeOut(out);
var normalizedExpected = normalizeHTML(item.result);
if ( normalizedOut !== normalizedExpected ) {
printTitle();
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failOutputTests++;
console.log('RAW EXPECTED:');
console.log(item.result + "\n");
console.log('RAW RENDERED:');
console.log(formatHTML(out) + "\n");
var a = formatHTML(normalizedExpected);
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console.log('NORMALIZED EXPECTED:');
console.log(a + "\n");
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var b = formatHTML(normalizedOut);
console.log('NORMALIZED RENDERED:')
console.log(formatHTML(normalizeOut(out)) + "\n");
var patch = jsDiff.createPatch('wikitext.txt', a, b, 'before', 'after');
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console.log('DIFF:');
console.log(patch.replace(/^[^\n]*\n[^\n]*\n[^\n]*\n[^\n]*\n/, ''));
} else {
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passedTests++;
console.log( 'PASSED: ' + item.title );
}
}
});
}
function processTokens ( tokens, tokenizer ) {
// push a body element, just to be sure to have one
tokenizer.processToken({type: 'TAG', name: 'body'});
// Process all tokens
for (var i = 0, length = tokens.length; i < length; i++) {
tokenizer.processToken(tokens[i]);
}
// And signal the end
tokenizer.processToken({type: 'END'});
}
var comments = [];
cases.forEach(function(item) {
if (typeof item == 'object') {
switch(item.type) {
case 'article':
//processArticle(item);
break;
case 'test':
// Add comments to following test.
item.comments = comments;
comments = [];
processTest(item);
break;
case 'comment':
comments.push(item.comment);
break;
default:
break;
}
}
});
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console.log( "==========================================================");
console.log( "SUMMARY: ");
console.log( passedTests + " passed");
console.log( failParseTests + " parse failures");
console.log( failTreeTests + " tree build failures");
console.log( failOutputTests + " output differences");
console.log( "\n" + (failParseTests + failTreeTests + failOutputTests) + " total failures");
console.log( "==========================================================");
})();