1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_pane-toggle-02.js b/devtools/client/inspector/test/browser_inspector_pane-toggle-02.js
new file mode 100644
index 000000000..54b68c655
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+++ b/devtools/client/inspector/test/browser_inspector_pane-toggle-02.js
@@ -0,0 +1,43 @@
+/* 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 the inspector toggled panel is visible by default, is hidden after
+// clicking on the toggle button and remains expanded/collapsed when switching
+// hosts.
+
+add_task(function* () {
+  info("Open the inspector in a side toolbox host");
+  let {toolbox, inspector} = yield openInspectorForURL("about:blank", "side");
+
+  let panel = inspector.panelDoc.querySelector("#inspector-splitter-box .controlled");
+
+  let button = inspector.panelDoc.querySelector(".sidebar-toggle");
+  ok(!panel.classList.contains("pane-collapsed"), "The panel is in expanded state");
+
+  info("Listen to the end of the animation on the sidebar panel");
+  let onTransitionEnd = once(panel, "transitionend");
+
+  info("Click on the toggle button");
+  EventUtils.synthesizeMouseAtCenter(button, {},
+    inspector.panelDoc.defaultView);
+
+  yield onTransitionEnd;
+  ok(panel.classList.contains("pane-collapsed"), "The panel is in collapsed state");
+  ok(!panel.hasAttribute("animated"),
+    "The collapsed panel will not perform unwanted animations");
+
+  info("Switch the host to bottom type");
+  yield toolbox.switchHost("bottom");
+  ok(panel.classList.contains("pane-collapsed"), "The panel is in collapsed state");
+
+  info("Click on the toggle button to expand the panel again");
+
+  onTransitionEnd = once(panel, "transitionend");
+  EventUtils.synthesizeMouseAtCenter(button, {},
+    inspector.panelDoc.defaultView);
+  yield onTransitionEnd;
+
+  ok(!panel.classList.contains("pane-collapsed"), "The panel is in expanded state");
+});