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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js')
-rw-r--r--js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js61
1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js b/js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js
new file mode 100644
index 000000000..514910316
--- /dev/null
+++ b/js/src/jit-test/tests/arrays/ion-push-nonwritable-length.js
@@ -0,0 +1,61 @@
+function f(arr)
+{
+ assertEq(arr.push(4), 5); // if it doesn't throw :-)
+}
+
+function test(out)
+{
+ // Create an array of arrays, to be iterated over for [].push-calling. We
+ // can't just loop on push on a single array with non-writable length because
+ // push throws when called on an array with non-writable length.
+ var arrs = out.arrs = [];
+ for (var i = 0; i < 100; i++)
+ arrs.push([0, 1, 2, 3]);
+
+ // Use a much-greater capacity than the eventual non-writable length, so that
+ // the inline-push will work.
+ var a = [0, 1, 2, 3, 4, 5, 6, 7];
+ Object.defineProperty(a, "length", { writable: false, value: 4 });
+
+ arrs.push(a);
+
+ for (var i = 0, sz = arrs.length; i < sz; i++)
+ {
+ var arr = arrs[i];
+ f(arr);
+ }
+}
+
+var obj = {};
+var a, arrs;
+
+try
+{
+ test(obj);
+ throw new Error("didn't throw!");
+}
+catch (e)
+{
+ assertEq(e instanceof TypeError, true, "expected TypeError, got " + e);
+
+ arrs = obj.arrs;
+ assertEq(arrs.length, 101);
+ for (var i = 0; i < 100; i++)
+ {
+ assertEq(arrs[i].length, 5, "unexpected length for arrs[" + i + "]");
+ assertEq(arrs[i][0], 0, "bad element for arrs[" + i + "][0]");
+ assertEq(arrs[i][1], 1, "bad element for arrs[" + i + "][1]");
+ assertEq(arrs[i][2], 2, "bad element for arrs[" + i + "][2]");
+ assertEq(arrs[i][3], 3, "bad element for arrs[" + i + "][3]");
+ assertEq(arrs[i][4], 4, "bad element for arrs[" + i + "][4]");
+ }
+
+ a = arrs[100];
+ assertEq(a[0], 0, "bad element for a[" + i + "]");
+ assertEq(a[1], 1, "bad element for a[" + i + "]");
+ assertEq(a[2], 2, "bad element for a[" + i + "]");
+ assertEq(a[3], 3, "bad element for a[" + i + "]");
+ assertEq(a.hasOwnProperty(4), false, "element addition should have thrown");
+ assertEq(a[4], undefined);
+ assertEq(a.length, 4, "length shouldn't have been changed");
+}