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 // Check that dynamically introducing conflicting consts/vars 29 // is silently ignored (and does not lead to exceptions). 30 31 var caught = 0; 32 33 eval("const a"); 34 try { eval("var a"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 35 assertTrue(typeof a == 'undefined'); 36 try { eval("var a = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 37 assertTrue(typeof a == 'undefined'); 38 39 eval("const b = 0"); 40 try { eval("var b"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 41 assertEquals(0, b); 42 try { eval("var b = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 43 assertEquals(0, b); 44 assertEquals(0, caught); 45 46 eval("var c"); 47 try { eval("const c"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 48 assertTrue(typeof c == 'undefined'); 49 assertEquals(1, caught); 50 try { eval("const c = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 51 assertEquals(undefined, c); 52 assertEquals(2, caught); 53 54 eval("var d = 0"); 55 try { eval("const d"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 56 assertEquals(0, d); 57 assertEquals(3, caught); 58 try { eval("const d = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } 59 assertEquals(0, d); 60 assertEquals(4, caught); 61
