1 files changed, 48 insertions, 0 deletions
diff --git a/devtools/client/framework/test/browser_toolbox_selected_tool_unavailable.js b/devtools/client/framework/test/browser_toolbox_selected_tool_unavailable.js
new file mode 100644
index 000000000..d7cc5c94d
--- /dev/null
+++ b/devtools/client/framework/test/browser_toolbox_selected_tool_unavailable.js
@@ -0,0 +1,48 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that opening the toolbox doesn't throw when the previously selected
+// tool is not supported.
+
+const testToolDefinition = {
+  id: "test-tool",
+  isTargetSupported: () => true,
+  visibilityswitch: "devtools.test-tool.enabled",
+  url: "about:blank",
+  label: "someLabel",
+  build: (iframeWindow, toolbox) => {
+      return {
+        target: toolbox.target,
+        toolbox: toolbox,
+        isReady: true,
+        destroy: () => {},
+        panelDoc: iframeWindow.document
+      };
+    }
+};
+
+add_task(function* () {
+  gDevTools.registerTool(testToolDefinition);
+  let tab = yield addTab("about:blank");
+  let target = TargetFactory.forTab(tab);
+
+  let toolbox = yield gDevTools.showToolbox(target, testToolDefinition.id);
+  is(toolbox.currentToolId, "test-tool", "test-tool was selected");
+  yield gDevTools.closeToolbox(target);
+
+  // Make the previously selected tool unavailable.
+  testToolDefinition.isTargetSupported = () => false;
+
+  target = TargetFactory.forTab(tab);
+  toolbox = yield gDevTools.showToolbox(target);
+  is(toolbox.currentToolId, "webconsole", "web console was selected");
+
+  yield gDevTools.closeToolbox(target);
+  gDevTools.unregisterTool(testToolDefinition.id);
+  tab = toolbox = target = null;
+  gBrowser.removeCurrentTab();
+});