1 files changed, 27 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_pane-toggle-01.js b/devtools/client/inspector/test/browser_inspector_pane-toggle-01.js
new file mode 100644
index 000000000..1ec95cec3
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+++ b/devtools/client/inspector/test/browser_inspector_pane-toggle-01.js
@@ -0,0 +1,27 @@
+/* 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 panel has a sidebar pane toggle button, and that
+// this button is visible both in BOTTOM and SIDE hosts.
+
+add_task(function* () {
+  info("Open the inspector in a bottom toolbox host");
+  let {toolbox, inspector} = yield openInspectorForURL("about:blank", "bottom");
+
+  let button = inspector.panelDoc.querySelector(".sidebar-toggle");
+  ok(button, "The toggle button exists in the DOM");
+  is(button.parentNode.id, "inspector-sidebar-toggle-box",
+     "The toggle button has the right parent");
+  ok(button.getAttribute("title"), "The tool tip has initial state");
+  ok(!button.classList.contains("pane-collapsed"), "The button is in expanded state");
+  ok(!!button.getClientRects().length, "The button is visible");
+
+  info("Switch the host to side type");
+  yield toolbox.switchHost("side");
+
+  ok(!!button.getClientRects().length, "The button is still visible");
+  ok(!button.classList.contains("pane-collapsed"),
+     "The button is still in expanded state");
+});