1a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Copyright 2008 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Check that dynamically introducing conflicting consts/vars 293ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch// is silently ignored (and does not lead to exceptions). 30a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 31a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvar caught = 0; 32a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 33a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("const a"); 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("var a"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertTrue(typeof a == 'undefined'); 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("var a = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertTrue(typeof a == 'undefined'); 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("const b = 0"); 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("var b"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(0, b); 42a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("var b = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 43a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertEquals(0, b); 44a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 45a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("var c"); 46a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("const c"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 47a7e24c173cf37484693b9abb38e494fa7bd7baebSteve BlockassertTrue(typeof c == 'undefined'); 48a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("const c = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 493ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochassertEquals(1, c); 50a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 51a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockeval("var d = 0"); 52a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("const d"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 533ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochassertEquals(undefined, d); 54a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocktry { eval("const d = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 553ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochassertEquals(1, d); 56a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 573ef787dbeca8a5fb1086949cda830dccee07bfbdBen MurdochassertEquals(0, caught); 58