1 // Copyright 2009 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 // Test unary addition in various contexts. 29 30 // Test value context. 31 assertEquals(1, +'1'); 32 assertEquals(1, +1); 33 assertEquals(1.12, +1.12); 34 assertEquals(NaN, +undefined); 35 assertEquals(NaN, +{}); 36 37 // Test effect context. 38 assertEquals(1, eval("+'1'; 1")); 39 assertEquals(1, eval("+1; 1")); 40 assertEquals(1, eval("+1.12; 1")); 41 assertEquals(1, eval("+undefined; 1")); 42 assertEquals(1, eval("+{}; 1")); 43 44 // Test test context. 45 assertEquals(1, (+'1') ? 1 : 2); 46 assertEquals(1, (+1) ? 1 : 2); 47 assertEquals(1, (+'0') ? 2 : 1); 48 assertEquals(1, (+0) ? 2 : 1); 49 assertEquals(1, (+1.12) ? 1 : 2); 50 assertEquals(1, (+undefined) ? 2 : 1); 51 assertEquals(1, (+{}) ? 2 : 1); 52 53 // Test value/test context. 54 assertEquals(1, +'1' || 2); 55 assertEquals(1, +1 || 2); 56 assertEquals(1.12, +1.12 || 2); 57 assertEquals(2, +undefined || 2); 58 assertEquals(2, +{} || 2); 59 60 // Test test/value context. 61 assertEquals(2, +'1' && 2); 62 assertEquals(2, +1 && 2); 63 assertEquals(0, +'0' && 2); 64 assertEquals(0, +0 && 2); 65 assertEquals(2, +1.12 && 2); 66 assertEquals(NaN, +undefined && 2); 67 assertEquals(NaN, +{} && 2); 68
