1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-missing-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-missing-target-is-proxy.js
new file mode 100644
index 0000000000..0d189524f2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Proxy/ownKeys/trap-is-missing-target-is-proxy.js
@@ -0,0 +1,48 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
+description: >
+  If "ownKeys" trap is null or undefined, [[OwnPropertyKeys]] call is
+  properly forwarded to [[ProxyTarget]] (which is also a Proxy object).
+info: |
+  [[OwnPropertyKeys]] ( )
+
+  [...]
+  4. Let target be O.[[ProxyTarget]].
+  5. Let trap be ? GetMethod(handler, "ownKeys").
+  6. If trap is undefined, then
+    a. Return ? target.[[OwnPropertyKeys]]().
+
+  [[OwnPropertyKeys]] ( )
+
+  1. Let keys be a new empty List.
+  [...]
+  5. For each integer i starting with 0 such that i < len, in ascending order, do
+    a. Add ! ToString(i) as the last element of keys.
+  [...]
+  7. For each own property key P of O such that Type(P) is String and P is not an
+  array index, in ascending chronological order of property creation, do
+    a. Add P as the last element of keys.
+  8. For each own property key P of O such that Type(P) is Symbol, in ascending
+  chronological order of property creation, do
+    a. Add P as the last element of keys.
+  9. Return keys.
+includes: [compareArray.js]
+features: [Symbol, Proxy, Reflect]
+---*/
+
+var sym = Symbol();
+var string = new String("str");
+string[sym] = 1;
+
+var stringTarget = new Proxy(string, {});
+var stringProxy = new Proxy(stringTarget, {});
+
+assert.compareArray(
+  Reflect.ownKeys(stringProxy),
+  ["0", "1", "2", "length", sym]
+);
+
+reportCompare(0, 0);