JezK
Edit File: global-const-var-conflicts.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Check that dynamically introducing conflicting consts/vars // is silently ignored (and does not lead to exceptions). var caught = 0; eval("const a"); try { eval("var a"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertTrue(typeof a == 'undefined'); try { eval("var a = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertTrue(typeof a == 'undefined'); eval("const b = 0"); try { eval("var b"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertEquals(0, b); try { eval("var b = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertEquals(0, b); eval("var c"); try { eval("const c"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertTrue(typeof c == 'undefined'); try { eval("const c = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertEquals(1, c); eval("var d = 0"); try { eval("const d"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertEquals(undefined, d); try { eval("const d = 1"); } catch (e) { caught++; assertTrue(e instanceof TypeError); } assertEquals(1, d); assertEquals(0, caught);