1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/sort-delete-ascending-order.js b/js/src/tests/non262/Array/sort-delete-ascending-order.js
new file mode 100644
index 0000000000..99df536df7
--- /dev/null
+++ b/js/src/tests/non262/Array/sort-delete-ascending-order.js
@@ -0,0 +1,37 @@
+// Calls Array.prototype.sort and tests that properties are deleted in the same order in the
+// native and the self-hosted implementation.
+
+function createProxy() {
+  var deleted = [];
+  var proxy = new Proxy([, , 0], {
+    deleteProperty(t, pk){
+      deleted.push(pk);
+      return delete t[pk];
+    }
+  });
+
+  return {proxy, deleted};
+}
+
+function compareFn(a, b) {
+  return a < b ? -1 : a > b ? 1 : 0;
+}
+
+// Sort an array without a comparator function. This calls the native sort implementation.
+
+var {proxy, deleted} = createProxy();
+
+assertEqArray(deleted, []);
+proxy.sort()
+assertEqArray(deleted, ["1", "2"]);
+
+// Now sort an array with a comparator function. This calls the self-hosted sort implementation.
+
+var {proxy, deleted} = createProxy();
+
+assertEqArray(deleted, []);
+proxy.sort(compareFn);
+assertEqArray(deleted, ["1", "2"]);
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);