Add m-esr52 at 52.6.0

1 files changed, 33 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/proxy/testDirectProxyOwnKeysSymbol.js b/js/src/jit-test/tests/proxy/testDirectProxyOwnKeysSymbol.js
new file mode 100644
index 000000000..ad6e1845e
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testDirectProxyOwnKeysSymbol.js
@@ -0,0 +1,33 @@
+// Make sure that we can find own, enumerable symbols.
+var symbol = Symbol("bad");
+var symbol2 = Symbol("good");
+var proxy = new Proxy({}, {
+    ownKeys() {
+        return [symbol, symbol2];
+    },
+    getOwnPropertyDescriptor(target, name) {
+        if (name == symbol)
+            return {configurable: true, enumerable: false, value: {}};
+        // Only this enumerable symbol should be defined.
+        if (name == symbol2)
+            return {configurable: true, enumerable: true, value: {}};
+        assertEq(true, false);
+    },
+    get(target, name) {
+        // Slightly confusing, but these are the descriptors that defineProperties
+        // is going to define on the object.
+        if (name == symbol)
+            return {configurable: true, value: "bad"};
+        if (name == symbol2)
+            return {configurable: true, value: "good"};
+        assertEq(true, false);
+    }
+});
+assertEq(Object.getOwnPropertySymbols(proxy).length, 2);
+
+var obj = {};
+Object.defineProperties(obj, proxy);
+assertEq(Object.getOwnPropertySymbols(obj).length, 1);
+assertEq(symbol in obj, false);
+assertEq(symbol2 in obj, true);
+assertEq(obj[symbol2], "good");