1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Symbol/enumeration-order.js b/js/src/tests/ecma_6/Symbol/enumeration-order.js
new file mode 100644
index 000000000..8bcd1f02f
--- /dev/null
+++ b/js/src/tests/ecma_6/Symbol/enumeration-order.js
@@ -0,0 +1,40 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/ */
+
+// Symbols follow all other property keys in the result list.
+var log;
+function LoggingProxy() {
+    return new Proxy({}, {
+        defineProperty: (t, key, desc) => {
+            log.push(key);
+            return true;
+        }
+    });
+}
+
+var keys = [
+    "before",
+    Symbol(),
+    "during",
+    Symbol.for("during"),
+    Symbol.iterator,
+    "after"
+];
+var descs = {};
+for (var k of keys)
+    descs[k] = {configurable: true, value: 0};
+
+function test(descsObj) {
+    log = [];
+    Object.defineProperties(LoggingProxy(), descs);
+    assertEq(log.length, keys.length);
+    assertDeepEq(log.map(k => typeof k), ["string", "string", "string", "symbol", "symbol", "symbol"]);
+    for (var key of keys)
+        assertEq(log.indexOf(key) !== -1, true);
+}
+
+test(descs);
+test(new Proxy(descs, {}));
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);