Add m-esr52 at 52.6.0

1 files changed, 37 insertions, 0 deletions

diff --git a/js/src/jsapi-tests/testDifferentNewTargetInvokeConstructor.cpp b/js/src/jsapi-tests/testDifferentNewTargetInvokeConstructor.cpp
new file mode 100644
index 000000000..aec2b9616
--- /dev/null
+++ b/js/src/jsapi-tests/testDifferentNewTargetInvokeConstructor.cpp
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsapi.h"
+
+#include "jsapi-tests/tests.h"
+
+BEGIN_TEST(testDifferentNewTargetInvokeConstructor)
+{
+    JS::RootedValue func(cx);
+    JS::RootedValue otherFunc(cx);
+
+    EVAL("(function() { /* This is a different new.target function */ })", &otherFunc);
+
+    EVAL("(function(expected) { if (expected !== new.target) throw new Error('whoops'); })",
+         &func);
+
+    JS::AutoValueArray<1> args(cx);
+    args[0].set(otherFunc);
+
+    JS::RootedObject obj(cx);
+
+    JS::RootedObject newTarget(cx, &otherFunc.toObject());
+
+    CHECK(JS::Construct(cx, func, newTarget, args, &obj));
+
+    // It should fail, though, if newTarget is not a constructor
+    JS::RootedValue plain(cx);
+    EVAL("({})", &plain);
+    args[0].set(plain);
+    newTarget = &plain.toObject();
+    CHECK(!JS::Construct(cx, func, newTarget, args, &obj));
+
+    return true;
+}
+END_TEST(testDifferentNewTargetInvokeConstructor)