Add m-esr52 at 52.6.0

1 files changed, 13 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/proxy/testDirectProxyHas3.js b/js/src/jit-test/tests/proxy/testDirectProxyHas3.js
new file mode 100644
index 000000000..1840c85fd
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testDirectProxyHas3.js
@@ -0,0 +1,13 @@
+load(libdir + "asserts.js");
+
+/*
+ * Throw a TypeError if the trap reports a non-configurable own property as
+ * non-existent
+ */
+var target = {};
+Object.defineProperty(target, 'foo', {
+    configurable: false
+});
+var handler = { has: () => false };
+for (p of [new Proxy(target, handler), Proxy.revocable(target, handler).proxy])
+    assertThrowsInstanceOf(function () { 'foo' in p; }, TypeError);