JSTests/test262/test/built-ins/Function/S15.3.2.1_A1_T2.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: |
    When the Function constructor is called with one argument then body be that argument and the following steps are taken:
    i) Call ToString(body)
    ii) If P is not parsable as a FormalParameterListopt then throw a SyntaxError exception
    iii) If body is not parsable as FunctionBody then throw a SyntaxError exception
    iv) Create a new Function object as specified in 13.2 with parameters specified by parsing P as a FormalParameterListopt and body specified by parsing body as a FunctionBody.
    Pass in a scope chain consisting of the global object as the Scope parameter
    v) Return Result(iv)
es5id: 15.3.2.1_A1_T2
description: >
    The body of the function is "{toString:function(){return "return
    1;";}}"
---*/

var body = {
  toString: function() {
    return "return 1;";
  }
};

try {
  var f = new Function(body);
} catch (e) {
  throw new Test262Error('#1: test failed with error ' + e);
}

assert.sameValue(f.constructor, Function, 'The value of f.constructor is expected to equal the value of Function');
assert.sameValue(f(), 1, 'f() must return 1');