Add m-esr52 at 52.6.0

1 files changed, 33 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/self-hosting/GetStringDataProperty.js b/js/src/jit-test/tests/self-hosting/GetStringDataProperty.js
new file mode 100644
index 000000000..119bedcbc
--- /dev/null
+++ b/js/src/jit-test/tests/self-hosting/GetStringDataProperty.js
@@ -0,0 +1,33 @@
+// Bug 1267364 - GetStringDataProperty should return undefined when the object
+// is non-native.
+
+var GetStringDataProperty = getSelfHostedValue("GetStringDataProperty");
+
+function testProxy() {
+    var obj = new Proxy({"foo": "10"}, {});
+    var v = GetStringDataProperty(obj, "foo");
+    assertEq(v, undefined);
+}
+
+function testMaybeUnboxed() {
+    // Use JSON.parse to create unboxed object if availbale.
+    var obj = JSON.parse("[" + '{"foo": "10"},'.repeat(100) +"{}]");
+
+    // GetStringDataProperty may return "10" or undefined, depending on whether
+    // `obj` is unboxed or not
+    var v = GetStringDataProperty(obj[0], "foo");
+    assertEq(v == undefined || v == "10", true);
+}
+
+function testTypedObject() {
+    var {StructType, string} = TypedObject;
+    var S = new StructType({foo: string});
+    var obj = new S({foo: "10"});
+    var v = GetStringDataProperty(obj, "foo");
+    assertEq(v, undefined);
+}
+
+testProxy();
+testMaybeUnboxed();
+if (typeof TypedObject !== "undefined")
+    testTypedObject();