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-rw-r--r--js/src/jit-test/tests/arrays/slice.js37
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arrays/slice.js b/js/src/jit-test/tests/arrays/slice.js
new file mode 100644
index 000000000..ad4f66f63
--- /dev/null
+++ b/js/src/jit-test/tests/arrays/slice.js
@@ -0,0 +1,37 @@
+let invoked = false;
+Object.defineProperty(Array.prototype, '0', {set: function () {
+ invoked = true;
+}});
+
+let result = [1, 2, 3].slice(1);
+assertEq(invoked, false);
+
+let proxy = new Proxy({}, {
+ get: function (target, name, proxy) {
+ switch (name) {
+ case "length":
+ return 2;
+ case "0":
+ return 15;
+ case "1":
+ // Should not invoke [[Get]] for this hole.
+ default:
+ assertEq(false, true);
+ }
+ },
+ has: function (target, name) {
+ switch (name) {
+ case "0":
+ return true;
+ case "1":
+ return false;
+ default:
+ assertEq(false, true);
+ }
+ }
+})
+result = Array.prototype.slice.call(proxy, 0);
+assertEq(result.length, 2);
+assertEq(0 in result, true);
+assertEq(1 in result, false);
+assertEq(result[0], 15);