Add m-esr52 at 52.6.0

1 files changed, 28 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Object/getOwnPropertySymbols-proxy.js b/js/src/tests/ecma_6/Object/getOwnPropertySymbols-proxy.js
new file mode 100644
index 000000000..56f20afb3
--- /dev/null
+++ b/js/src/tests/ecma_6/Object/getOwnPropertySymbols-proxy.js
@@ -0,0 +1,28 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// getOwnPropertySymbols(proxy) calls the getOwnPropertyNames hook (only).
+
+var symbols = [Symbol(), Symbol("moon"), Symbol.for("sun"), Symbol.iterator];
+var hits = 0;
+
+function HandlerProxy() {
+    return new Proxy({}, {
+        get: function (t, key) {
+            if (key !== "ownKeys")
+                throw new Error("tried to access handler[" + uneval(key) + "]");
+            hits++;
+            return t => symbols;
+        }
+    });
+}
+
+function OwnKeysProxy() {
+    return new Proxy({}, new HandlerProxy);
+}
+
+assertDeepEq(Object.getOwnPropertySymbols(new OwnKeysProxy), symbols);
+assertEq(hits, 1);
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);