Add m-esr52 at 52.6.0

1 files changed, 16 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/proxy/seal-proxy.js b/js/src/jit-test/tests/proxy/seal-proxy.js
new file mode 100644
index 000000000..74923cde0
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/seal-proxy.js
@@ -0,0 +1,16 @@
+var called = [];
+var proxy = new Proxy({a: 1}, {
+    getOwnPropertyDescriptor(target, P) {
+        called.push("getOwnPropertyDescriptor");
+        return Object.getOwnPropertyDescriptor(target, P);
+    },
+    defineProperty(target, P, desc) {
+        called.push("defineProperty");
+        assertEq(Object.getOwnPropertyNames(desc).length, 1);
+        assertEq(desc.configurable, false);
+        return Object.defineProperty(target, P, desc);
+    }
+});
+
+Object.seal(proxy);
+assertEq(called.toString(), "defineProperty");