1 files changed, 10 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug854558.js b/js/xpconnect/tests/unit/test_bug854558.js
new file mode 100644
index 0000000000..04a876af0c
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug854558.js
@@ -0,0 +1,10 @@
+function run_test() {
+
+  var chromeSB = new Cu.Sandbox(this);
+  var contentSB = new Cu.Sandbox('http://www.example.com');
+  Cu.evalInSandbox('this.foo = {a: 2}', chromeSB);
+  contentSB.foo = chromeSB.foo;
+  Assert.equal(Cu.evalInSandbox('foo.a', contentSB), undefined, "Default deny with no __exposedProps__");
+  Cu.evalInSandbox('this.foo.__exposedProps__ = {a: "r"}', chromeSB);
+  Assert.equal(Cu.evalInSandbox('foo.a', contentSB), undefined, "Still not allowed with __exposedProps__");
+}