1 files changed, 13 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/addon-source/browser_dbg_addon3/lib/main.js b/devtools/client/debugger/test/mochitest/addon-source/browser_dbg_addon3/lib/main.js
new file mode 100644
index 000000000..fc00b60a1
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/addon-source/browser_dbg_addon3/lib/main.js
@@ -0,0 +1,13 @@
+var { Cc, Ci } = require("chrome");
+var { once } = require("sdk/system/events");
+
+var observerService = Cc["@mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
+var observer = {
+  observe: function () {
+    debugger;
+  }
+};
+
+once("sdk:loader:destroy", () => observerService.removeObserver(observer, "debuggerAttached"));
+
+observerService.addObserver(observer, "debuggerAttached", false);