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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Tests the Object.seal and Object.isSealed methods - ES 15.2.3.9 and | 28 // Tests the Object.seal and Object.isSealed methods - ES 15.2.3.9 and |
29 // ES 15.2.3.12 | 29 // ES 15.2.3.12 |
30 | 30 |
| 31 // Flags: --allow-natives-syntax --noalways-opt |
31 | 32 |
32 // Test that we throw an error if an object is not passed as argument. | 33 // Test that we throw an error if an object is not passed as argument. |
33 var non_objects = new Array(undefined, null, 1, -1, 0, 42.43); | 34 var non_objects = new Array(undefined, null, 1, -1, 0, 42.43); |
34 for (var key in non_objects) { | 35 for (var key in non_objects) { |
35 var exception = false; | 36 var exception = false; |
36 try { | 37 try { |
37 Object.seal(non_objects[key]); | 38 Object.seal(non_objects[key]); |
38 } catch(e) { | 39 } catch(e) { |
39 exception = true; | 40 exception = true; |
40 assertTrue(/Object.seal called on non-object/.test(e)); | 41 assertTrue(/Object.seal called on non-object/.test(e)); |
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185 var obj4 = {}; | 186 var obj4 = {}; |
186 Object.defineProperty(obj4, 'x', {configurable: true, writable: false}); | 187 Object.defineProperty(obj4, 'x', {configurable: true, writable: false}); |
187 Object.defineProperty(obj4, 'y', {configurable: false, writable: false}); | 188 Object.defineProperty(obj4, 'y', {configurable: false, writable: false}); |
188 Object.preventExtensions(obj4); | 189 Object.preventExtensions(obj4); |
189 | 190 |
190 assertFalse(Object.isSealed(obj4)); | 191 assertFalse(Object.isSealed(obj4)); |
191 | 192 |
192 // Make sure that Object.seal returns the sealed object. | 193 // Make sure that Object.seal returns the sealed object. |
193 var obj4 = {}; | 194 var obj4 = {}; |
194 assertTrue(obj4 === Object.seal(obj4)); | 195 assertTrue(obj4 === Object.seal(obj4)); |
| 196 |
| 197 // |
| 198 // Test that built-in array functions can't modify a sealed array. |
| 199 // |
| 200 obj = [1, 2, 3]; |
| 201 var objControl = [4, 5, 6]; |
| 202 |
| 203 // Allow these functions to set up monomorphic calls, using custom built-ins. |
| 204 var push_call = function(a) { a.push(10); return a; } |
| 205 var pop_call = function(a) { return a.pop(); } |
| 206 for (var i = 0; i < 3; i++) { |
| 207 push_call(obj); |
| 208 pop_call(obj); |
| 209 } |
| 210 |
| 211 Object.seal(obj); |
| 212 assertThrows(function() { push_call(obj); }, TypeError); |
| 213 assertThrows(function() { pop_call(obj); }, TypeError); |
| 214 |
| 215 // But the control object is fine at these sites. |
| 216 assertDoesNotThrow(function() { push_call(objControl); }); |
| 217 assertDoesNotThrow(function() { pop_call(objControl); }); |
| 218 |
| 219 assertDoesNotThrow(function() { obj.push(); }); |
| 220 assertThrows(function() { obj.push(3); }, TypeError); |
| 221 assertThrows(function() { obj.pop(); }, TypeError); |
| 222 assertThrows(function() { obj.shift(3); }, TypeError); |
| 223 assertDoesNotThrow(function() { obj.unshift(); }); |
| 224 assertThrows(function() { obj.unshift(1); }, TypeError); |
| 225 assertThrows(function() { obj.splice(0, 0, 100, 101, 102); }, TypeError); |
| 226 assertDoesNotThrow(function() { obj.splice(0,0); }); |
| 227 |
| 228 assertDoesNotThrow(function() { objControl.push(3); }); |
| 229 assertDoesNotThrow(function() { objControl.pop(); }); |
| 230 assertDoesNotThrow(function() { objControl.shift(3); }); |
| 231 assertDoesNotThrow(function() { objControl.unshift(); }); |
| 232 assertDoesNotThrow(function() { objControl.splice(0, 0, 100, 101, 102); }); |
| 233 |
| 234 // Verify that crankshaft still does the right thing. |
| 235 obj = [1, 2, 3]; |
| 236 |
| 237 push_call = function(a) { a.push(1000); return a; } |
| 238 // Include a call site that doesn't have a custom built-in. |
| 239 var shift_call = function(a) { a.shift(1000); return a; } |
| 240 for (var i = 0; i < 3; i++) { |
| 241 push_call(obj); |
| 242 shift_call(obj); |
| 243 } |
| 244 |
| 245 %OptimizeFunctionOnNextCall(push_call); |
| 246 %OptimizeFunctionOnNextCall(shift_call); |
| 247 push_call(obj); |
| 248 shift_call(obj); |
| 249 assertOptimized(push_call); |
| 250 assertOptimized(shift_call); |
| 251 Object.seal(obj); |
| 252 assertThrows(function() { push_call(obj); }, TypeError); |
| 253 assertThrows(function() { shift_call(obj); }, TypeError); |
| 254 assertOptimized(push_call); |
| 255 // shift() doesn't have a custom call generator, so deopt will occur. |
| 256 assertUnoptimized(shift_call); |
| 257 assertDoesNotThrow(function() { push_call(objControl); }); |
| 258 assertDoesNotThrow(function() { shift_call(objControl); }); |
| 259 |
| 260 // Verify special behavior of splice on sealed objects. |
| 261 obj = [1,2,3]; |
| 262 Object.seal(obj); |
| 263 assertDoesNotThrow(function() { obj.splice(0,1,100); }); |
| 264 assertEquals(100, obj[0]); |
| 265 assertDoesNotThrow(function() { obj.splice(0,2,1,2); }); |
| 266 assertDoesNotThrow(function() { obj.splice(1,2,1,2); }); |
| 267 // Count of items to delete is clamped by length. |
| 268 assertDoesNotThrow(function() { obj.splice(1,2000,1,2); }); |
| 269 assertThrows(function() { obj.splice(0,0,1); }, TypeError); |
| 270 assertThrows(function() { obj.splice(1,2000,1,2,3); }, TypeError); |
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