1 files changed, 30 insertions, 0 deletions
diff --git a/devtools/server/tests/unit/test_getyoungestframe.js b/devtools/server/tests/unit/test_getyoungestframe.js
new file mode 100644
index 000000000..035ab5b0c
--- /dev/null
+++ b/devtools/server/tests/unit/test_getyoungestframe.js
@@ -0,0 +1,30 @@
+function run_test()
+{
+  Components.utils.import("resource://gre/modules/jsdebugger.jsm");
+  addDebuggerToGlobal(this);
+  var xpcInspector = Cc["@mozilla.org/jsinspector;1"].getService(Ci.nsIJSInspector);
+  var g = testGlobal("test1");
+
+  var dbg = new Debugger();
+  dbg.uncaughtExceptionHook = testExceptionHook;
+
+  dbg.addDebuggee(g);
+  dbg.onDebuggerStatement = function (aFrame) {
+    do_check_true(aFrame === dbg.getNewestFrame());
+    // Execute from the nested event loop, dbg.getNewestFrame() won't
+    // be working anymore.
+
+    do_execute_soon(function () {
+      try {
+        do_check_true(aFrame === dbg.getNewestFrame());
+      } finally {
+        xpcInspector.exitNestedEventLoop("test");
+      }
+    });
+    xpcInspector.enterNestedEventLoop("test");
+  };
+
+  g.eval("function debuggerStatement() { debugger; }; debuggerStatement();");
+
+  dbg.enabled = false;
+}