Add m-esr52 at 52.6.0

1 files changed, 35 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/proxy/testDirectProxyHasOwnProperty.js b/js/src/jit-test/tests/proxy/testDirectProxyHasOwnProperty.js
new file mode 100644
index 000000000..5b7a97bba
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testDirectProxyHasOwnProperty.js
@@ -0,0 +1,35 @@
+// Forward to the target if the trap is not defined
+var proto = Object.create(null, {
+    'foo': {
+        configurable: true
+    }
+});
+var descs = {
+    'bar': {
+        configurable: true
+    }
+};
+descs[Symbol.for("quux")] = {configurable: true};
+var target = Object.create(proto, descs);
+
+for (let p of [new Proxy(target, {}), Proxy.revocable(target, {}).proxy]) {
+    assertEq(({}).hasOwnProperty.call(p, 'foo'), false);
+    assertEq(({}).hasOwnProperty.call(p, 'bar'), true);
+    assertEq(({}).hasOwnProperty.call(p, 'quux'), false);
+    assertEq(({}).hasOwnProperty.call(p, Symbol('quux')), false);
+    assertEq(({}).hasOwnProperty.call(p, 'Symbol(quux)'), false);
+    assertEq(({}).hasOwnProperty.call(p, Symbol.for('quux')), true);
+}
+
+// Make sure only the getOwnPropertyDescriptor trap is called, and not the has
+// trap.
+var called;
+var handler = { getOwnPropertyDescriptor: function () { called = true; },
+                has: function () { assertEq(false, true, "has trap must not be called"); }
+              }
+
+for (let p of [new Proxy({}, handler), Proxy.revocable({}, handler).proxy]) {
+    called = false;
+    assertEq(({}).hasOwnProperty.call(p, 'foo'), false);
+    assertEq(called, true);
+}