1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/sort_proxy.js b/js/src/tests/non262/Array/sort_proxy.js
new file mode 100644
index 0000000000..40ebb907bf
--- /dev/null
+++ b/js/src/tests/non262/Array/sort_proxy.js
@@ -0,0 +1,38 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Ensure, via proxy, that only get, set, delete, has, and getOwnPropertyDescriptor
+// are touched during sorting.
+
+const handler = {
+    set: function(target, prop, value) {
+        target[prop] = value;
+        return value;
+    },
+    getPrototypeOf: () => { throw "You shouldn't touch getPrototypeOf!" },
+    setPrototypeOf: () => { throw "You shouldn't touch setPrototypeOf!" },
+    isExtensible: () => { throw "You shouldn't touch isExtensible!" },
+    preventExtensions: () => { throw "You shouldn't touch preventExtensions!" },
+    defineProperty: () => { throw "You shouldn't touch defineProperty!" },
+    ownKeys: () => { throw "You shouldn't touch ownKeys!" },
+    apply: () => { throw "You shouldn't touch apply!" },
+    construct: () => { throw "You shouldn't touch construct!" },
+}
+
+function testArray(arr) {
+    let proxy = new Proxy(arr, handler)
+
+    // The supplied comparators trigger a JavaScript implemented sort.
+    proxy.sort((x, y) => 1 * x - y);
+    arr.sort((x, y) => 1 * x - y);
+
+    for (let i in arr)
+        assertEq(arr[i], proxy[i]);
+}
+
+testArray([-1]);
+testArray([5, -1, 2, 99]);
+testArray([5, -1, , , , 2, 99]);
+testArray([]);
+
+reportCompare(0, 0);