Add m-esr52 at 52.6.0

1 files changed, 23 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Object/preventExtensions-proxy.js b/js/src/tests/ecma_6/Object/preventExtensions-proxy.js
new file mode 100644
index 000000000..347a63bc3
--- /dev/null
+++ b/js/src/tests/ecma_6/Object/preventExtensions-proxy.js
@@ -0,0 +1,23 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function logProxy(object = {}, handler = {}) {
+    var log = [];
+    var proxy = new Proxy(object, new Proxy(handler, {
+        get(target, propertyKey, receiver) {
+            log.push(propertyKey);
+            return target[propertyKey];
+        }
+    }));
+    return {proxy, log};
+}
+
+var {proxy, log} = logProxy();
+Object.preventExtensions(proxy);
+assertDeepEq(log, ["preventExtensions"]);
+
+var {proxy, log} = logProxy();
+Object.preventExtensions(Object.preventExtensions(proxy));
+assertDeepEq(log, ["preventExtensions", "preventExtensions"]);
+
+reportCompare(0, 0);