Function testScript

build.js:722–812

(fn, transformFn, rowNum)

}

function testScript(fn, transformFn, rowNum) {

  function deindentFunc(fn) {
    fn = (fn+'');
    var indent = /(?:^|\n)([\t ]+)[^\n]+/.exec(fn);
    if (indent) {
      fn = fn.replace(new RegExp('\n' + indent[1], 'g'), '\n');
    }
    return fn;
  }

  if (!fn) {
    return '';
  }
  if (typeof fn === 'function') {
    // see if the code is encoded in a comment
    var expr = (fn+"").match(/[^]*\/\*([^]*)\*\/\}$/);
    // if there wasn't an expression, make the function statement into one
    if (!expr) {
      if (transformFn) {
        try {
          expr = transformFn("("+fn+")");
        } catch(e) {
          expr = "false";
        }
      } else {
        expr = deindentFunc(fn);
      }
      return cheerio.load('')('<script>test(\n' + expr + '())</script>').attr('data-source', expr);
    } else {
      expr = deindentFunc(expr[1]);
      var transformed = false;
      if (transformFn) {
        try {
          if (expr.search(/Function\s*\(|eval\s*\(/) > -1) {
            throw new Error("This test's code invokes eval() and cannot be compiled.");
          }
          expr = transformFn("(function (){" + expr + "})");
          transformed = true;
        } catch(e) {
          expr = "/* Error during compilation: " + e.message + "*/";
        }
      }
      /* jshint unused: true */ // this appears unused, but removing it might break things.
      var async = !!/asyncTestPassed/.exec(fn);
      /* jshint unused: false */
      var codeString = JSON.stringify(expr).replace(/\\r/g,'');
      var asyncFn = 'global.__asyncPassedFn && __asyncPassedFn("' + rowNum + '")';
      var strictAsyncFn = 'global.__strictAsyncPassedFn && __strictAsyncPassedFn("' + rowNum + '")';
      var funcString =
        transformed ? '' + asyncFn + ' && eval(' + codeString + ')()'
        : 'Function("asyncTestPassed",' + codeString + ')(asyncTestPassed)';
      var strictFuncString =
        transformed ? '' + strictAsyncFn + ' && function (){"use strict";' + codeString + '}() && "Strict"'
        : 'Function("asyncTestPassed","\'use strict\';"+' + codeString + ')(asyncTestPassed)';

      return cheerio.load('')('<script>' +
         'test(function (){'