So siehts ganz gut aus !

node_modules/pug/test/run-utils.js

@@ -0,0 +1,106 @@
+var fs = require('fs');
+var assert = require('assert');
+var pug = require('../');
+var uglify = require('uglify-js');
+var mkdirp = require('mkdirp').sync;
+
+var filters = {
+  custom: function (str, options) {
+    assert(options.opt === 'val');
+    assert(options.num === 2);
+    return 'BEGIN' + str + 'END';
+  }
+};
+
+// test cases
+
+function writeFileSync(filename, data) {
+  try {
+    if (fs.readFileSync(filename, 'utf8') === data.toString('utf8')) {
+      return;
+    }
+  } catch (ex) {
+    if (ex.code !== 'ENOENT') {
+      throw ex;
+    }
+  }
+  fs.writeFileSync(filename, data);
+}
+
+function findCases(dir) {
+  return fs.readdirSync(dir).filter(function(file){
+    return ~file.indexOf('.pug');
+  }).map(function(file){
+    return file.replace('.pug', '');
+  });
+}
+
+function testSingle(it, suffix, test){
+  var name = test.replace(/[-.]/g, ' ');
+  it(name, function(){
+    var path = __dirname + '/cases' + suffix + '/' + test + '.pug';
+    var str = fs.readFileSync(path, 'utf8');
+    var fn = pug.compile(str, {
+      filename: path,
+      pretty: true,
+      basedir: __dirname + '/cases' + suffix,
+      filters: filters,
+      filterAliases: {'markdown': 'markdown-it'},
+    });
+    var actual = fn({ title: 'Pug' });
+
+    writeFileSync(__dirname + '/output' + suffix + '/' + test + '.html', actual);
+
+    var html = fs.readFileSync(__dirname + '/cases' + suffix + '/' + test + '.html', 'utf8').trim().replace(/\r/g, '');
+    var clientCode = uglify.minify(pug.compileClient(str, {
+      filename: path,
+      pretty: true,
+      compileDebug: false,
+      basedir: __dirname + '/cases' + suffix,
+      filters: filters,
+      filterAliases: {'markdown': 'markdown-it'},
+    }), {output: {beautify: true}, mangle: false, compress: false, fromString: true}).code;
+    var clientCodeDebug = uglify.minify(pug.compileClient(str, {
+      filename: path,
+      pretty: true,
+      compileDebug: true,
+      basedir: __dirname + '/cases' + suffix,
+      filters: filters,
+      filterAliases: {'markdown': 'markdown-it'},
+    }), {output: {beautify: true}, mangle: false, compress: false, fromString: true}).code;
+    writeFileSync(__dirname + '/output' + suffix + '/' + test + '.js', uglify.minify(pug.compileClient(str, {
+      filename: path,
+      pretty: false,
+      compileDebug: false,
+      basedir: __dirname + '/cases' + suffix,
+      filters: filters,
+      filterAliases: {'markdown': 'markdown-it'},
+    }), {output: {beautify: true}, mangle: false, compress: false, fromString: true}).code);
+    if (/filter/.test(test)) {
+      actual = actual.replace(/\n| /g, '');
+      html = html.replace(/\n| /g, '');
+    }
+    if (/mixins-unused/.test(test)) {
+      assert(/never-called/.test(str), 'never-called is in the pug file for mixins-unused');
+      assert(!/never-called/.test(clientCode), 'never-called should be removed from the code');
+    }
+    expect(actual.trim()).toEqual(html);
+    actual = Function('pug', clientCode + '\nreturn template;')()({ title: 'Pug' });
+    if (/filter/.test(test)) {
+      actual = actual.replace(/\n| /g, '');
+    }
+    expect(actual.trim()).toEqual(html);
+    actual = Function('pug', clientCodeDebug + '\nreturn template;')()({ title: 'Pug' });
+    if (/filter/.test(test)) {
+      actual = actual.replace(/\n| /g, '');
+    }
+    expect(actual.trim()).toEqual(html);
+  });
+}
+
+
+module.exports = {
+  filters,
+  findCases,
+  testSingle,
+};