diff -r 000000000000 -r 6474c204b198 toolkit/devtools/server/tests/unit/test_trace_actor-08.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/server/tests/unit/test_trace_actor-08.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,123 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test the "depth" trace type.
+ */
+
+var gDebuggee;
+var gClient;
+var gTraceClient;
+
+function run_test()
+{
+  initTestTracerServer();
+  gDebuggee = addTestGlobal("test-tracer-actor");
+  gClient = new DebuggerClient(DebuggerServer.connectPipe());
+  gClient.connect(function() {
+    attachTestTab(gClient, "test-tracer-actor", function(aResponse, aTabClient) {
+      gClient.attachTracer(aResponse.traceActor, function(aResponse, aTraceClient) {
+        gTraceClient = aTraceClient;
+        test_frame_depths();
+      });
+    });
+  });
+  do_test_pending();
+}
+
+function test_frame_depths()
+{
+  const tracesStopped = promise.defer();
+  gClient.addListener("traces", (aEvent, { traces }) => {
+    for (let t of traces) {
+      check_trace(t);
+    }
+    tracesStopped.resolve();
+  });
+
+  start_trace()
+    .then(eval_code)
+    .then(() => tracesStopped.promise)
+    .then(stop_trace)
+    .then(function() {
+      finishClient(gClient);
+    }).then(null, error => {
+      do_check_true(false, "Should not get an error, got: " + error);
+    });
+}
+
+function start_trace()
+{
+  let deferred = promise.defer();
+  gTraceClient.startTrace(["depth", "name"], null, function() { deferred.resolve(); });
+  return deferred.promise;
+}
+
+function eval_code()
+{
+  gDebuggee.eval("(" + function iife() {
+    function first() {
+      second();
+    }
+
+    function second() {
+      third();
+    }
+
+    function third() {
+    }
+
+    first();
+  } + ")()");
+}
+
+function stop_trace()
+{
+  let deferred = promise.defer();
+  gTraceClient.stopTrace(null, function() { deferred.resolve(); });
+  return deferred.promise;
+}
+
+function check_trace({ sequence, depth, name })
+{
+  switch(sequence) {
+  case 0:
+    do_check_eq(name, "(eval)");
+    // Fall through
+  case 9:
+    do_check_eq(depth, 0);
+    break;
+
+  case 1:
+    do_check_eq(name, "iife");
+    // Fall through
+  case 8:
+    do_check_eq(depth, 1);
+    break;
+
+  case 2:
+    do_check_eq(name, "first");
+    // Fall through
+  case 7:
+    do_check_eq(depth, 2);
+    break;
+
+  case 3:
+    do_check_eq(name, "second");
+    // Fall through
+  case 6:
+    do_check_eq(depth, 3);
+    break;
+
+  case 4:
+    do_check_eq(name, "third");
+    // Fall through
+  case 5:
+    do_check_eq(depth, 4);
+    break;
+
+  default:
+    // Should have covered all sequences.
+    do_check_true(false);
+  }
+}