diff -r 000000000000 -r 6474c204b198 browser/devtools/framework/test/browser_toolbox_select_event.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/framework/test/browser_toolbox_select_event.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let toolbox;
+
+function test() {
+  addTab("about:blank", function() {
+    let target = TargetFactory.forTab(gBrowser.selectedTab);
+    gDevTools.showToolbox(target, "webconsole").then(testSelect);
+  });
+}
+
+let called = {
+  inspector: false,
+  webconsole: false,
+  styleeditor: false,
+  //jsdebugger: false,
+}
+
+function testSelect(aToolbox) {
+  toolbox = aToolbox;
+
+  info("Toolbox fired a `ready` event");
+
+  toolbox.on("select", selectCB);
+
+  toolbox.selectTool("inspector");
+  toolbox.selectTool("webconsole");
+  toolbox.selectTool("styleeditor");
+  //toolbox.selectTool("jsdebugger");
+}
+
+function selectCB(event, id) {
+  called[id] = true;
+  info("toolbox-select event from " + id);
+
+  for (let tool in called) {
+    if (!called[tool]) {
+      return;
+    }
+  }
+
+  ok(true, "All the tools fired a 'select event'");
+  toolbox.off("select", selectCB);
+
+  reselect();
+}
+
+function reselect() {
+  for (let tool in called) {
+    called[tool] = false;
+  }
+
+  toolbox.once("inspector-selected", function() {
+    tidyUpIfAllCalled("inspector");
+  });
+
+  toolbox.once("webconsole-selected", function() {
+    tidyUpIfAllCalled("webconsole");
+  });
+
+  /*
+  toolbox.once("jsdebugger-selected", function() {
+    tidyUpIfAllCalled("jsdebugger");
+  });
+  */
+
+  toolbox.once("styleeditor-selected", function() {
+    tidyUpIfAllCalled("styleeditor");
+  });
+
+  toolbox.selectTool("inspector");
+  toolbox.selectTool("webconsole");
+  toolbox.selectTool("styleeditor");
+  //toolbox.selectTool("jsdebugger");
+}
+
+function tidyUpIfAllCalled(id) {
+  called[id] = true;
+  info("select event from " + id);
+
+  for (let tool in called) {
+    if (!called[tool]) {
+      return;
+    }
+  }
+
+  ok(true, "All the tools fired a {id}-selected event");
+  tidyUp();
+}
+
+function tidyUp() {
+  toolbox.destroy();
+  gBrowser.removeCurrentTab();
+
+  toolbox = null;
+  finish();
+}