diff -r 000000000000 -r 6474c204b198 browser/devtools/webaudioeditor/test/browser_wa_params_view_events.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webaudioeditor/test/browser_wa_params_view_events.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if the shader editor shows the appropriate UI when opened.
+ */
+
+function spawnTest() {
+  let [target, debuggee, panel] = yield initWebAudioEditor(SIMPLE_CONTEXT_URL);
+  let { gFront, $, $$, EVENTS } = panel.panelWin;
+
+  let started = once(gFront, "start-context");
+
+  reload(target);
+
+  let [[dest, osc, gain], [[_, destID], [_, oscID], [_, gainID]]] = yield Promise.all([
+    get3(gFront, "create-node"),
+    get3Spread(panel.panelWin, EVENTS.UI_ADD_NODE_LIST)
+  ]);
+
+  is(dest.actorID, destID, "EVENTS.UI_ADD_NODE_LIST fired for node with ID");
+  is(osc.actorID, oscID, "EVENTS.UI_ADD_NODE_LIST fired for node with ID");
+  is(gain.actorID, gainID, "EVENTS.UI_ADD_NODE_LIST fired for node with ID");
+
+  yield teardown(panel);
+  finish();
+}