Add m-esr52 at 52.6.0

1 files changed, 31 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/proxy/testDirectProxyGetInherited2.js b/js/src/jit-test/tests/proxy/testDirectProxyGetInherited2.js
new file mode 100644
index 000000000..3c58e314e
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testDirectProxyGetInherited2.js
@@ -0,0 +1,31 @@
+// Getting a property that's inherted from a proxy calls the proxy's get handler.
+
+var handler = {
+    get(t, id, r) {
+        assertEq(this, handler);
+        assertEq(t, target);
+        assertEq(id, "foo");
+        assertEq(r, obj);
+        return "bar";
+    },
+    getOwnPropertyDescriptor(t, id) {
+        throw "FAIL";
+    }
+};
+
+var target = {};
+var proto = new Proxy(target, handler);
+var obj = Object.create(proto);
+assertEq(obj.foo, "bar");
+
+// Longer proto chain: same result.
+var origObj = obj;
+for (var i = 0; i < 4; i++)
+    obj = Object.create(obj);
+assertEq(obj.foo, "bar");
+
+// Chain of transparent proxy wrappers: same result.
+obj = origObj;
+for (var i = 0; i < 4; i++)
+    obj = new Proxy(obj, {});
+assertEq(obj.foo, "bar");