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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 assertEquals("[object global]", this.toString());
     29 assertEquals("[object Undefined]", toString());
     30 
     31 assertEquals("[object global]", eval("this.toString()"));
     32 assertEquals("[object Undefined]", eval("toString()"));
     33 
     34 assertEquals("[object global]", eval("var f; this.toString()"));
     35 assertEquals("[object Undefined]", eval("var f; toString()"));
     36 
     37 
     38 function F(f) {
     39   assertEquals("[object global]", this.toString());
     40   assertEquals("[object Undefined]", toString());
     41 
     42   assertEquals("[object global]", eval("this.toString()"));
     43   assertEquals("[object Undefined]", eval("toString()"));
     44 
     45   assertEquals("[object global]", eval("var f; this.toString()"));
     46   assertEquals("[object Undefined]", eval("var f; toString()"));
     47 
     48   assertEquals("[object Undefined]", eval("f()"));
     49 
     50   // Receiver should be the arguments object here.
     51   assertEquals("[object Arguments]", eval("arguments[0]()"));
     52   with (arguments) {
     53     assertEquals("[object Arguments]", toString());
     54   }
     55 }
     56 
     57 F(Object.prototype.toString);
     58