diff -r 000000000000 -r 6474c204b198 browser/devtools/webaudioeditor/test/browser_wa_first-run.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/webaudioeditor/test/browser_wa_first-run.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,44 @@
+/* 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, $ } = panel.panelWin;
+
+  is($("#reload-notice").hidden, false,
+    "The 'reload this page' notice should initially be visible.");
+  is($("#waiting-notice").hidden, true,
+    "The 'waiting for an audio context' notice should initially be hidden.");
+  is($("#content").hidden, true,
+    "The tool's content should initially be hidden.");
+
+  let navigating = once(target, "will-navigate");
+  let started = once(gFront, "start-context");
+
+  reload(target);
+
+  yield navigating;
+
+  is($("#reload-notice").hidden, true,
+    "The 'reload this page' notice should be hidden when navigating.");
+  is($("#waiting-notice").hidden, false,
+    "The 'waiting for an audio context' notice should be visible when navigating.");
+  is($("#content").hidden, true,
+    "The tool's content should still be hidden.");
+
+  yield started;
+
+  is($("#reload-notice").hidden, true,
+    "The 'reload this page' notice should be hidden after context found.");
+  is($("#waiting-notice").hidden, true,
+    "The 'waiting for an audio context' notice should be hidden after context found.");
+  is($("#content").hidden, false,
+    "The tool's content should not be hidden anymore.");
+
+  yield teardown(panel);
+  finish();
+}