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comparison: js/src/jit-test/tests/arrays/pop-nonwritable-length-denseinitializedlength-below-length.js
js/src/jit-test/tests/arrays/pop-nonwritable-length-denseinitializedlength-below-length.js
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- 6474c204b198
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| -1:000000000000 | 0:9afb8fb05768 |
|---|---|
| 1 load(libdir + "asserts.js"); | |
| 2 | |
| 3 function f(arr) | |
| 4 { | |
| 5 assertEq(arr.pop(), undefined); // if it doesn't throw | |
| 6 } | |
| 7 | |
| 8 var N = 100; | |
| 9 | |
| 10 function basic(out) | |
| 11 { | |
| 12 // Create an array of arrays, to be iterated over for [].pop-calling. We | |
| 13 // can't just loop on pop on a single array with non-writable length because | |
| 14 // pop throws when called on an array with non-writable length. | |
| 15 var arrs = out.arrs = []; | |
| 16 for (var i = 0; i < N; i++) | |
| 17 { | |
| 18 var arr = [0, 1, 2, 3, 4]; | |
| 19 arr.length = 6; | |
| 20 arrs.push(arr); | |
| 21 } | |
| 22 | |
| 23 var a = [0, 1, 2, 3, 4]; | |
| 24 Object.defineProperty(a, "length", { writable: false, value: 6 }); | |
| 25 | |
| 26 arrs.push(a); | |
| 27 | |
| 28 for (var i = 0, sz = arrs.length; i < sz; i++) | |
| 29 f(arrs[i]); | |
| 30 } | |
| 31 | |
| 32 var obj = {}; | |
| 33 var arrs, a; | |
| 34 | |
| 35 assertThrowsInstanceOf(function() { basic(obj); }, TypeError); | |
| 36 | |
| 37 var arrs = obj.arrs; | |
| 38 assertEq(arrs.length, N + 1); | |
| 39 for (var i = 0; i < N; i++) | |
| 40 { | |
| 41 assertEq(arrs[i].length, 5, "unexpected length for arrs[" + i + "]"); | |
| 42 assertEq(arrs[i].hasOwnProperty(5), false, | |
| 43 "element not deleted for arrs[" + i + "]"); | |
| 44 } | |
| 45 | |
| 46 var a = arrs[N]; | |
| 47 assertEq(a.hasOwnProperty(5), false); | |
| 48 assertEq(a[5], undefined); | |
| 49 assertEq(a.length, 6); |
