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-rw-r--r--js/xpconnect/tests/unit/head.js15
1 files changed, 15 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/head.js b/js/xpconnect/tests/unit/head.js
new file mode 100644
index 0000000000..ca9a22bee8
--- /dev/null
+++ b/js/xpconnect/tests/unit/head.js
@@ -0,0 +1,15 @@
+"use strict";
+
+// Wraps the given object in an XPConnect wrapper and, if an interface
+// is passed, queries the result to that interface.
+function xpcWrap(obj, iface) {
+ let ifacePointer = Cc[
+ "@mozilla.org/supports-interface-pointer;1"
+ ].createInstance(Ci.nsISupportsInterfacePointer);
+
+ ifacePointer.data = obj;
+ if (iface) {
+ return ifacePointer.data.QueryInterface(iface);
+ }
+ return ifacePointer.data;
+}