diff -r 000000000000 -r 6474c204b198 browser/devtools/framework/test/browser_new_activation_workflow.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/framework/test/browser_new_activation_workflow.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests devtools API
+
+const Cu = Components.utils;
+
+let toolbox, target;
+
+let tempScope = {};
+
+function test() {
+  addTab("about:blank", function(aBrowser, aTab) {
+    target = TargetFactory.forTab(gBrowser.selectedTab);
+    loadWebConsole(aTab).then(function() {
+      console.log('loaded');
+    }, console.error);
+  });
+}
+
+function loadWebConsole(aTab) {
+  ok(gDevTools, "gDevTools exists");
+
+  return gDevTools.showToolbox(target, "webconsole").then(function(aToolbox) {
+    toolbox = aToolbox;
+    checkToolLoading();
+  }, console.error);
+}
+
+function checkToolLoading() {
+  is(toolbox.currentToolId, "webconsole", "The web console is selected");
+  ok(toolbox.isReady, "toolbox is ready")
+
+  selectAndCheckById("jsdebugger").then(function() {
+    selectAndCheckById("styleeditor").then(function() {
+      testToggle();
+    });
+  }, console.error);
+}
+
+function selectAndCheckById(id) {
+  let doc = toolbox.frame.contentDocument;
+
+  return toolbox.selectTool(id).then(function() {
+    let tab = doc.getElementById("toolbox-tab-" + id);
+    is(tab.hasAttribute("selected"), true, "The " + id + " tab is selected");
+  });
+}
+
+function testToggle() {
+  toolbox.once("destroyed", function() {
+    // Cannot reuse a target after it's destroyed.
+    target = TargetFactory.forTab(gBrowser.selectedTab);
+    gDevTools.showToolbox(target, "styleeditor").then(function(aToolbox) {
+      toolbox = aToolbox;
+      is(toolbox.currentToolId, "styleeditor", "The style editor is selected");
+      finishUp();
+    });
+  }.bind(this));
+
+  toolbox.destroy();
+}
+
+function finishUp() {
+  toolbox.destroy().then(function() {
+    toolbox = null;
+    target = null;
+    gBrowser.removeCurrentTab();
+    finish();
+  });
+}