The Tor Browser / file comparison
comparison: js/src/jit-test/tests/arrays/splice-nonwritable-length.js
js/src/jit-test/tests/arrays/splice-nonwritable-length.js
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:30db3d5ad32a |
|---|---|
| 1 load(libdir + "asserts.js"); | |
| 2 | |
| 3 function f(arr) | |
| 4 { | |
| 5 assertEq(arr.splice(1, 2, 9, 8, 7, 6).length, 2); // if it doesn't throw :-) | |
| 6 } | |
| 7 | |
| 8 var N = 100; | |
| 9 | |
| 10 function test(out) | |
| 11 { | |
| 12 // Create an array of arrays, to be iterated over for [].splice-calling. | |
| 13 var arrs = out.arrs = []; | |
| 14 for (var i = 0; i < N; i++) | |
| 15 arrs.push([0, 1, 2, 3]); | |
| 16 | |
| 17 // Use a much-greater capacity than the eventual non-writable length, just for | |
| 18 // variability. | |
| 19 var a = [0, 1, 2, 3, 4, 5, 6, 7]; | |
| 20 Object.defineProperty(a, "length", { writable: false, value: 4 }); | |
| 21 | |
| 22 arrs.push(a); | |
| 23 | |
| 24 for (var i = 0, sz = arrs.length; i < sz; i++) | |
| 25 f(arrs[i]); | |
| 26 } | |
| 27 | |
| 28 var obj = {}; | |
| 29 assertThrowsInstanceOf(function() { test(obj); }, TypeError); | |
| 30 | |
| 31 var arrs = obj.arrs; | |
| 32 assertEq(arrs.length, N + 1); | |
| 33 for (var i = 0; i < N; i++) | |
| 34 { | |
| 35 assertEq(arrs[i].length, 6, "unexpected length for arrs[" + i + "]"); | |
| 36 assertEq(arrs[i][0], 0, "bad element for arrs[" + i + "][0]"); | |
| 37 assertEq(arrs[i][1], 9, "bad element for arrs[" + i + "][1]"); | |
| 38 assertEq(arrs[i][2], 8, "bad element for arrs[" + i + "][2]"); | |
| 39 assertEq(arrs[i][3], 7, "bad element for arrs[" + i + "][3]"); | |
| 40 assertEq(arrs[i][4], 6, "bad element for arrs[" + i + "][4]"); | |
| 41 assertEq(arrs[i][5], 3, "bad element for arrs[" + i + "][5]"); | |
| 42 } | |
| 43 | |
| 44 var a = arrs[N]; | |
| 45 assertEq(a[0], 0, "bad element for a[0]"); | |
| 46 assertEq(a[1], 1, "bad element for a[1]"); | |
| 47 assertEq(a[2], 2, "bad element for a[2]"); | |
| 48 assertEq(a[3], 3, "bad element for a[3]"); | |
| 49 assertEq(a.hasOwnProperty(4), false, "shouldn't have added any elements"); | |
| 50 assertEq(a[4], undefined); | |
| 51 assertEq(a.hasOwnProperty(5), false, "shouldn't have added any elements"); | |
| 52 assertEq(a[5], undefined); | |
| 53 assertEq(a.length, 4, "length shouldn't have been changed"); |
