Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | |
| 6 | (function TestDefaults() { |
| 7 | function f1(x = 1) { return x } |
| 8 | assertEquals(1, f1()); |
| 9 | assertEquals(1, f1(undefined)); |
| 10 | assertEquals(2, f1(2)); |
| 11 | assertEquals(null, f1(null)); |
| 12 | |
| 13 | function f2(x, y = x) { return x + y; } |
| 14 | assertEquals(8, f2(4)); |
| 15 | assertEquals(8, f2(4, undefined)); |
| 16 | assertEquals(6, f2(4, 2)); |
| 17 | |
| 18 | function f3(x = 1, y) { return x + y; } |
| 19 | assertEquals(8, f3(5, 3)); |
| 20 | assertEquals(3, f3(undefined, 2)); |
| 21 | assertEquals(6, f3(4, 2)); |
| 22 | |
| 23 | function f4(x = () => 1) { return x() } |
| 24 | assertEquals(1, f4()); |
| 25 | assertEquals(1, f4(undefined)); |
| 26 | assertEquals(2, f4(() => 2)); |
| 27 | assertThrows(() => f4(null), TypeError); |
| 28 | |
| 29 | function f5(x, y = () => x) { return x + y(); } |
| 30 | assertEquals(8, f5(4)); |
| 31 | assertEquals(8, f5(4, undefined)); |
| 32 | assertEquals(6, f5(4, () => 2)); |
| 33 | |
| 34 | function f6(x = {a: 1, m() { return 2 }}) { return x.a + x.m(); } |
| 35 | assertEquals(3, f6()); |
| 36 | assertEquals(3, f6(undefined)); |
| 37 | assertEquals(5, f6({a: 2, m() { return 3 }})); |
| 38 | |
| 39 | var g1 = (x = 1) => { return x }; |
| 40 | assertEquals(1, g1()); |
| 41 | assertEquals(1, g1(undefined)); |
| 42 | assertEquals(2, g1(2)); |
| 43 | assertEquals(null, g1(null)); |
| 44 | |
| 45 | var g2 = (x, y = x) => { return x + y; }; |
| 46 | assertEquals(8, g2(4)); |
| 47 | assertEquals(8, g2(4, undefined)); |
| 48 | assertEquals(6, g2(4, 2)); |
| 49 | |
| 50 | var g3 = (x = 1, y) => { return x + y; }; |
| 51 | assertEquals(8, g3(5, 3)); |
| 52 | assertEquals(3, g3(undefined, 2)); |
| 53 | assertEquals(6, g3(4, 2)); |
| 54 | |
| 55 | var g4 = (x = () => 1) => { return x() }; |
| 56 | assertEquals(1, g4()); |
| 57 | assertEquals(1, g4(undefined)); |
| 58 | assertEquals(2, g4(() => 2)); |
| 59 | assertThrows(() => g4(null), TypeError); |
| 60 | |
| 61 | var g5 = (x, y = () => x) => { return x + y(); }; |
| 62 | assertEquals(8, g5(4)); |
| 63 | assertEquals(8, g5(4, undefined)); |
| 64 | assertEquals(6, g5(4, () => 2)); |
| 65 | |
| 66 | var g6 = (x = {a: 1, m() { return 2 }}) => { return x.a + x.m(); }; |
| 67 | assertEquals(3, g6()); |
| 68 | assertEquals(3, g6(undefined)); |
| 69 | assertEquals(5, g6({a: 2, m() { return 3 }})); |
| 70 | }()); |
| 71 | |
| 72 | |
| 73 | (function TestEvalInParameters() { |
| 74 | function f1(x = eval(0)) { return x } |
| 75 | assertEquals(0, f1()); |
| 76 | function f2(x = () => eval(1)) { return x() } |
| 77 | assertEquals(1, f2()); |
| 78 | })(); |
| 79 | |
| 80 | |
| 81 | (function TestParameterScopingSloppy() { |
| 82 | var x = 1; |
| 83 | |
| 84 | function f1(a = x) { var x = 2; return a; } |
| 85 | assertEquals(1, f1()); |
| 86 | function f2(a = x) { function x() {}; return a; } |
| 87 | assertEquals(1, f2()); |
| 88 | function f3(a = eval("x")) { var x; return a; } |
| 89 | assertEquals(1, f3()); |
| 90 | function f31(a = eval("'use strict'; x")) { var x; return a; } |
| 91 | assertEquals(1, f31()); |
| 92 | function f4(a = function() { return x }) { var x; return a(); } |
| 93 | assertEquals(1, f4()); |
| 94 | function f5(a = () => x) { var x; return a(); } |
| 95 | assertEquals(1, f5()); |
| 96 | function f6(a = () => eval("x")) { var x; return a(); } |
| 97 | assertEquals(1, f6()); |
| 98 | function f61(a = () => { 'use strict'; return eval("x") }) { var x; return a(); } |
| 99 | assertEquals(1, f61()); |
| 100 | function f62(a = () => eval("'use strict'; x")) { var x; return a(); } |
| 101 | assertEquals(1, f62()); |
| 102 | |
| 103 | var g1 = (a = x) => { var x = 2; return a; }; |
| 104 | assertEquals(1, g1()); |
| 105 | var g2 = (a = x) => { function x() {}; return a; }; |
| 106 | assertEquals(1, g2()); |
| 107 | var g3 = (a = eval("x")) => { var x; return a; }; |
| 108 | assertEquals(1, g3()); |
| 109 | var g31 = (a = eval("'use strict'; x")) => { var x; return a; }; |
| 110 | assertEquals(1, g31()); |
| 111 | var g4 = (a = function() { return x }) => { var x; return a(); }; |
| 112 | assertEquals(1, g4()); |
| 113 | var g5 = (a = () => x) => { var x; return a(); }; |
| 114 | assertEquals(1, g5()); |
| 115 | var g6 = (a = () => eval("x")) => { var x; return a(); }; |
| 116 | assertEquals(1, g6()); |
| 117 | var g61 = (a = () => { 'use strict'; return eval("x") }) => { var x; return a(); }; |
| 118 | assertEquals(1, g61()); |
| 119 | var g62 = (a = () => eval("'use strict'; x")) => { var x; return a(); }; |
| 120 | assertEquals(1, g62()); |
| 121 | |
| 122 | var f11 = function f(x = f) { var f; return x; } |
| 123 | assertSame(f11, f11()); |
| 124 | var f12 = function f(x = f) { function f() {}; return x; } |
| 125 | assertSame(f12, f12()); |
| 126 | var f13 = function f(f = 7, x = f) { return x; } |
| 127 | assertSame(7, f13()); |
| 128 | |
| 129 | var o1 = {f: function(x = this) { return x; }}; |
| 130 | assertSame(o1, o1.f()); |
| 131 | assertSame(1, o1.f(1)); |
| 132 | })(); |
| 133 | |
| 134 | (function TestParameterScopingStrict() { |
| 135 | "use strict"; |
| 136 | var x = 1; |
| 137 | |
| 138 | function f1(a = x) { let x = 2; return a; } |
| 139 | assertEquals(1, f1()); |
| 140 | function f2(a = x) { const x = 2; return a; } |
| 141 | assertEquals(1, f2()); |
| 142 | function f3(a = x) { function x() {}; return a; } |
| 143 | assertEquals(1, f3()); |
| 144 | function f4(a = eval("x")) { var x; return a; } |
| 145 | assertEquals(1, f4()); |
| 146 | function f5(a = () => eval("x")) { var x; return a(); } |
| 147 | assertEquals(1, f5()); |
| 148 | |
| 149 | var g1 = (a = x) => { let x = 2; return a; }; |
| 150 | assertEquals(1, g1()); |
| 151 | var g2 = (a = x) => { const x = 2; return a; }; |
| 152 | assertEquals(1, g2()); |
| 153 | var g3 = (a = x) => { function x() {}; return a; }; |
| 154 | assertEquals(1, g3()); |
| 155 | var g4 = (a = eval("x")) => { var x; return a; }; |
| 156 | assertEquals(1, g4()); |
| 157 | var g5 = (a = () => eval("x")) => { var x; return a(); }; |
| 158 | assertEquals(1, g5()); |
| 159 | |
| 160 | var f11 = function f(x = f) { let f; return x; } |
| 161 | assertSame(f11, f11()); |
| 162 | var f12 = function f(x = f) { const f = 0; return x; } |
| 163 | assertSame(f12, f12()); |
| 164 | var f13 = function f(x = f) { function f() {}; return x; } |
| 165 | assertSame(f13, f13()); |
| 166 | })(); |
| 167 | |
| 168 | (function TestSloppyEvalScoping() { |
| 169 | var x = 1; |
| 170 | |
| 171 | function f1(y = eval("var x = 2")) { with ({}) { return x; } } |
| 172 | assertEquals(1, f1()); |
| 173 | function f2(y = eval("var x = 2"), z = x) { return z; } |
| 174 | assertEquals(1, f2()); |
| 175 | assertEquals(1, f2(0)); |
| 176 | function f3(y = eval("var x = 2"), z = eval("x")) { return z; } |
| 177 | assertEquals(1, f3()); |
| 178 | assertEquals(1, f3(0)); |
| 179 | function f8(y = (eval("var x = 2"), x)) { return y; } |
| 180 | assertEquals(2, f8()); |
| 181 | assertEquals(0, f8(0)); |
| 182 | |
| 183 | function f11(z = eval("var y = 2")) { return y; } |
| 184 | assertThrows(f11, ReferenceError); |
| 185 | function f12(z = eval("var y = 2"), b = y) {} |
| 186 | assertThrows(f12, ReferenceError); |
| 187 | function f13(z = eval("var y = 2"), b = eval("y")) {} |
| 188 | assertThrows(f13, ReferenceError); |
| 189 | |
| 190 | function f21(f = () => x) { eval("var x = 2"); return f() } |
| 191 | assertEquals(1, f21()); |
| 192 | assertEquals(3, f21(() => 3)); |
| 193 | function f22(f = () => eval("x")) { eval("var x = 2"); return f() } |
| 194 | assertEquals(1, f22()); |
| 195 | assertEquals(3, f22(() => 3)); |
| 196 | |
| 197 | var g1 = (y = eval("var x = 2")) => { with ({}) { return x; } }; |
| 198 | assertEquals(1, g1()); |
| 199 | var g2 = (y = eval("var x = 2"), z = x) => { return z; }; |
| 200 | assertEquals(1, g2()); |
| 201 | assertEquals(1, g2(0)); |
| 202 | var g3 = (y = eval("var x = 2"), z = eval("x")) => { return z; }; |
| 203 | assertEquals(1, g3()); |
| 204 | assertEquals(1, g3(0)); |
| 205 | var g8 = (y = (eval("var x = 2"), x)) => { return y; }; |
| 206 | assertEquals(2, g8()); |
| 207 | assertEquals(0, g8(0)); |
| 208 | |
| 209 | var g11 = (z = eval("var y = 2")) => { return y; }; |
| 210 | assertThrows(g11, ReferenceError); |
| 211 | var g12 = (z = eval("var y = 2"), b = y) => {}; |
| 212 | assertThrows(g12, ReferenceError); |
| 213 | var g13 = (z = eval("var y = 2"), b = eval("y")) => {}; |
| 214 | assertThrows(g13, ReferenceError); |
| 215 | |
| 216 | var g21 = (f = () => x) => { eval("var x = 2"); return f() }; |
| 217 | assertEquals(1, g21()); |
| 218 | assertEquals(3, g21(() => 3)); |
| 219 | var g22 = (f = () => eval("x")) => { eval("var x = 2"); return f() }; |
| 220 | assertEquals(1, g22()); |
| 221 | assertEquals(3, g22(() => 3)); |
| 222 | })(); |
| 223 | |
| 224 | |
| 225 | (function TestStrictEvalScoping() { |
| 226 | 'use strict'; |
| 227 | var x = 1; |
| 228 | |
| 229 | function f1(y = eval("var x = 2")) { return x; } |
| 230 | assertEquals(1, f1()); |
| 231 | function f2(y = eval("var x = 2"), z = x) { return z; } |
| 232 | assertEquals(1, f2()); |
| 233 | assertEquals(1, f2(0)); |
| 234 | function f3(y = eval("var x = 2"), z = eval("x")) { return z; } |
| 235 | assertEquals(1, f3()); |
| 236 | assertEquals(1, f3(0)); |
| 237 | function f8(y = (eval("var x = 2"), x)) { return y; } |
| 238 | assertEquals(1, f8()); |
| 239 | assertEquals(0, f8(0)); |
| 240 | |
| 241 | function f11(z = eval("var y = 2")) { return y; } |
| 242 | assertThrows(f11, ReferenceError); |
| 243 | function f12(z = eval("var y = 2"), b = y) {} |
| 244 | assertThrows(f12, ReferenceError); |
| 245 | function f13(z = eval("var y = 2"), b = eval("y")) {} |
| 246 | assertThrows(f13, ReferenceError); |
| 247 | |
| 248 | function f21(f = () => x) { eval("var x = 2"); return f() } |
| 249 | assertEquals(1, f21()); |
| 250 | assertEquals(3, f21(() => 3)); |
| 251 | function f22(f = () => eval("x")) { eval("var x = 2"); return f() } |
| 252 | assertEquals(1, f22()); |
| 253 | assertEquals(3, f22(() => 3)); |
| 254 | })(); |
| 255 | |
| 256 | (function TestParameterTDZSloppy() { |
| 257 | function f1(a = x, x) { return a } |
| 258 | assertThrows(() => f1(undefined, 4), ReferenceError); |
| 259 | assertEquals(4, f1(4, 5)); |
| 260 | function f2(a = eval("x"), x) { return a } |
| 261 | assertThrows(() => f2(undefined, 4), ReferenceError); |
| 262 | assertEquals(4, f2(4, 5)); |
| 263 | function f3(a = eval("'use strict'; x"), x) { return a } |
| 264 | assertThrows(() => f3(undefined, 4), ReferenceError); |
| 265 | assertEquals(4, f3(4, 5)); |
| 266 | function f4(a = () => x, x) { return a() } |
| 267 | assertEquals(4, f4(() => 4, 5)); |
| 268 | function f5(a = () => eval("x"), x) { return a() } |
| 269 | assertEquals(4, f5(() => 4, 5)); |
| 270 | function f6(a = () => eval("'use strict'; x"), x) { return a() } |
| 271 | assertEquals(4, f6(() => 4, 5)); |
| 272 | |
| 273 | function f11(a = x, x = 2) { return a } |
| 274 | assertThrows(() => f11(), ReferenceError); |
| 275 | assertThrows(() => f11(undefined), ReferenceError); |
| 276 | assertThrows(() => f11(undefined, 4), ReferenceError); |
| 277 | assertEquals(4, f1(4, 5)); |
| 278 | function f12(a = eval("x"), x = 2) { return a } |
| 279 | assertThrows(() => f12(), ReferenceError); |
| 280 | assertThrows(() => f12(undefined), ReferenceError); |
| 281 | assertThrows(() => f12(undefined, 4), ReferenceError); |
| 282 | assertEquals(4, f12(4, 5)); |
| 283 | function f13(a = eval("'use strict'; x"), x = 2) { return a } |
| 284 | assertThrows(() => f13(), ReferenceError); |
| 285 | assertThrows(() => f13(undefined), ReferenceError); |
| 286 | assertThrows(() => f13(undefined, 4), ReferenceError); |
| 287 | assertEquals(4, f13(4, 5)); |
| 288 | |
| 289 | function f21(x = function() { return a }, ...a) { return x()[0] } |
| 290 | assertEquals(4, f21(undefined, 4)); |
| 291 | function f22(x = () => a, ...a) { return x()[0] } |
| 292 | assertEquals(4, f22(undefined, 4)); |
| 293 | function f23(x = () => eval("a"), ...a) { return x()[0] } |
| 294 | assertEquals(4, f23(undefined, 4)); |
| 295 | function f24(x = () => {'use strict'; return eval("a") }, ...a) { |
| 296 | return x()[0] |
| 297 | } |
| 298 | assertEquals(4, f24(undefined, 4)); |
| 299 | function f25(x = () => eval("'use strict'; a"), ...a) { return x()[0] } |
| 300 | assertEquals(4, f25(undefined, 4)); |
| 301 | |
| 302 | var g1 = (x = function() { return a }, ...a) => { return x()[0] }; |
| 303 | assertEquals(4, g1(undefined, 4)); |
| 304 | var g2 = (x = () => a, ...a) => { return x()[0] }; |
| 305 | assertEquals(4, g2(undefined, 4)); |
| 306 | })(); |
| 307 | |
| 308 | (function TestParameterTDZStrict() { |
| 309 | "use strict"; |
| 310 | |
| 311 | function f1(a = eval("x"), x) { return a } |
| 312 | assertThrows(() => f1(undefined, 4), ReferenceError); |
| 313 | assertEquals(4, f1(4, 5)); |
| 314 | function f2(a = () => eval("x"), x) { return a() } |
| 315 | assertEquals(4, f2(() => 4, 5)); |
| 316 | |
| 317 | function f11(a = eval("x"), x = 2) { return a } |
| 318 | assertThrows(() => f11(), ReferenceError); |
| 319 | assertThrows(() => f11(undefined), ReferenceError); |
| 320 | assertThrows(() => f11(undefined, 4), ReferenceError); |
| 321 | assertEquals(4, f11(4, 5)); |
| 322 | |
| 323 | function f21(x = () => eval("a"), ...a) { return x()[0] } |
| 324 | assertEquals(4, f21(undefined, 4)); |
| 325 | })(); |
| 326 | |
| 327 | (function TestArgumentsForNonSimpleParameters() { |
| 328 | function f1(x = 900) { arguments[0] = 1; return x } |
| 329 | assertEquals(9, f1(9)); |
| 330 | assertEquals(900, f1()); |
| 331 | function f2(x = 1001) { x = 2; return arguments[0] } |
| 332 | assertEquals(10, f2(10)); |
| 333 | assertEquals(undefined, f2()); |
| 334 | }()); |
| 335 | |
| 336 | |
| 337 | (function TestFunctionLength() { |
| 338 | assertEquals(0, (function(x = 1) {}).length); |
| 339 | assertEquals(0, (function(x = 1, ...a) {}).length); |
| 340 | assertEquals(1, (function(x, y = 1) {}).length); |
| 341 | assertEquals(1, (function(x, y = 1, ...a) {}).length); |
| 342 | assertEquals(2, (function(x, y, z = 1) {}).length); |
| 343 | assertEquals(2, (function(x, y, z = 1, ...a) {}).length); |
| 344 | assertEquals(1, (function(x, y = 1, z) {}).length); |
| 345 | assertEquals(1, (function(x, y = 1, z, ...a) {}).length); |
| 346 | assertEquals(1, (function(x, y = 1, z, v = 2) {}).length); |
| 347 | assertEquals(1, (function(x, y = 1, z, v = 2, ...a) {}).length); |
| 348 | })(); |
| 349 | |
| 350 | (function TestDirectiveThrows() { |
| 351 | "use strict"; |
| 352 | |
| 353 | assertThrows(function(){ eval("function(x=1){'use strict';}") }, SyntaxError); |
| 354 | assertThrows(function(){ eval("(x=1) => {'use strict';}") }, SyntaxError); |
| 355 | assertThrows( |
| 356 | function(){ eval("(class{foo(x=1) {'use strict';}});") }, SyntaxError); |
| 357 | |
| 358 | assertThrows( |
| 359 | function(){ eval("function(a, x=1){'use strict';}") }, SyntaxError); |
| 360 | assertThrows(function(){ eval("(a, x=1) => {'use strict';}") }, SyntaxError); |
| 361 | assertThrows( |
| 362 | function(){ eval("(class{foo(a, x=1) {'use strict';}});") }, SyntaxError); |
| 363 | })(); |