1 // Copyright 2013 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 // Flags: --new-string-add 29 30 assertEquals("ab", "a" + "b", "ll"); 31 32 assertEquals("12", "1" + "2", "dd"); 33 assertEquals("123", "1" + "2" + "3", "ddd"); 34 assertEquals("123", 1 + "2" + "3", "ndd"); 35 assertEquals("123", "1" + 2 + "3", "dnd"); 36 assertEquals("123", "1" + "2" + 3, "ddn"); 37 38 assertEquals("123", "1" + 2 + 3, "dnn"); 39 assertEquals("123", 1 + "2" + 3, "ndn"); 40 assertEquals("33", 1 + 2 + "3", "nnd"); 41 42 var x = "1"; 43 assertEquals("12", x + 2, "vn"); 44 assertEquals("12", x + "2", "vd"); 45 assertEquals("21", 2 + x, "nv"); 46 assertEquals("21", "2" + x, "dv"); 47 48 var y = "2"; 49 assertEquals("12", x + y, "vdvd"); 50 51 x = 1; 52 assertEquals("12", x + y, "vnvd"); 53 54 y = 2; 55 assertEquals(3, x + y, "vnvn"); 56 57 x = "1"; 58 assertEquals("12", x + y, "vdvn"); 59 60 y = "2"; 61 assertEquals("12", x + y, "vdvd2"); 62 63 (function(x, y) { 64 var z = "3"; 65 var w = "4"; 66 67 assertEquals("11", x + x, "xx"); 68 assertEquals("12", x + y, "xy"); 69 assertEquals("13", x + z, "xz"); 70 assertEquals("14", x + w, "xw"); 71 72 assertEquals("21", y + x, "yx"); 73 assertEquals("22", y + y, "yy"); 74 assertEquals("23", y + z, "yz"); 75 assertEquals("24", y + w, "yw"); 76 77 assertEquals("31", z + x, "zx"); 78 assertEquals("32", z + y, "zy"); 79 assertEquals("33", z + z, "zz"); 80 assertEquals("34", z + w, "zw"); 81 82 assertEquals("41", w + x, "wx"); 83 assertEquals("42", w + y, "wy"); 84 assertEquals("43", w + z, "wz"); 85 assertEquals("44", w + w, "ww"); 86 87 (function(){x = 1; z = 3;})(); 88 89 assertEquals(2, x + x, "x'x"); 90 assertEquals("12", x + y, "x'y"); 91 assertEquals(4, x + z, "x'z'"); 92 assertEquals("14", x + w, "x'w"); 93 94 assertEquals("21", y + x, "yx'"); 95 assertEquals("22", y + y, "yy"); 96 assertEquals("23", y + z, "yz'"); 97 assertEquals("24", y + w, "yw"); 98 99 assertEquals(4, z + x, "z'x'"); 100 assertEquals("32", z + y, "z'y"); 101 assertEquals(6, z + z, "z'z'"); 102 assertEquals("34", z + w, "z'w"); 103 104 assertEquals("41", w + x, "wx'"); 105 assertEquals("42", w + y, "wy"); 106 assertEquals("43", w + z, "wz'"); 107 assertEquals("44", w + w, "ww"); 108 })("1", "2"); 109 110 assertEquals("142", "1" + new Number(42), "sN"); 111 assertEquals("421", new Number(42) + "1", "Ns"); 112 assertEquals(84, new Number(42) + new Number(42), "NN"); 113 114 assertEquals("142", "1" + new String("42"), "sS"); 115 assertEquals("421", new String("42") + "1", "Ss"); 116 assertEquals("142", "1" + new String("42"), "sS"); 117 assertEquals("4242", new String("42") + new String("42"), "SS"); 118 119 assertEquals("1true", "1" + true, "sb"); 120 assertEquals("true1", true + "1", "bs"); 121 assertEquals(2, true + true, "bs"); 122 123 assertEquals("1true", "1" + new Boolean(true), "sB"); 124 assertEquals("true1", new Boolean(true) + "1", "Bs"); 125 assertEquals(2, new Boolean(true) + new Boolean(true), "Bs"); 126 127 assertEquals("1undefined", "1" + void 0, "sv"); 128 assertEquals("undefined1", (void 0) + "1", "vs"); 129 assertTrue(isNaN(void 0 + void 0), "vv"); 130 131 assertEquals("1null", "1" + null, "su"); 132 assertEquals("null1", null + "1", "us"); 133 assertEquals(0, null + null, "uu"); 134 135 (function (i) { 136 // Check that incoming frames are merged correctly. 137 var x; 138 var y; 139 var z; 140 var w; 141 switch (i) { 142 case 1: x = 42; y = "stry"; z = "strz"; w = 42; break; 143 default: x = "strx", y = 42; z = "strz"; w = 42; break; 144 } 145 var resxx = x + x; 146 var resxy = x + y; 147 var resxz = x + z; 148 var resxw = x + w; 149 var resyx = y + x; 150 var resyy = y + y; 151 var resyz = y + z; 152 var resyw = y + w; 153 var reszx = z + x; 154 var reszy = z + y; 155 var reszz = z + z; 156 var reszw = z + w; 157 var reswx = w + x; 158 var reswy = w + y; 159 var reswz = w + z; 160 var resww = w + w; 161 assertEquals(84, resxx, "swxx"); 162 assertEquals("42stry", resxy, "swxy"); 163 assertEquals("42strz", resxz, "swxz"); 164 assertEquals(84, resxw, "swxw"); 165 assertEquals("stry42", resyx, "swyx"); 166 assertEquals("strystry", resyy, "swyy"); 167 assertEquals("strystrz", resyz, "swyz"); 168 assertEquals("stry42", resyw, "swyw"); 169 assertEquals("strz42", reszx, "swzx"); 170 assertEquals("strzstry", reszy, "swzy"); 171 assertEquals("strzstrz", reszz, "swzz"); 172 assertEquals("strz42", reszw, "swzw"); 173 assertEquals(84, reswx, "swwx"); 174 assertEquals("42stry", reswy, "swwy"); 175 assertEquals("42strz", reswz, "swwz"); 176 assertEquals(84, resww, "swww"); 177 })(1); 178 179 // Generate ascii and non ascii strings from length 0 to 20. 180 var ascii = 'aaaaaaaaaaaaaaaaaaaa'; 181 var non_ascii = '\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234\u1234'; 182 assertEquals(20, ascii.length); 183 assertEquals(20, non_ascii.length); 184 var a = Array(21); 185 var b = Array(21); 186 for (var i = 0; i <= 20; i++) { 187 a[i] = ascii.substring(0, i); 188 b[i] = non_ascii.substring(0, i); 189 } 190 191 // Add ascii and non-ascii strings generating strings with length from 0 to 20. 192 for (var i = 0; i <= 20; i++) { 193 for (var j = 0; j < i; j++) { 194 assertEquals(a[i], a[j] + a[i - j]) 195 assertEquals(b[i], b[j] + b[i - j]) 196 } 197 } 198
