1 files changed, 49 insertions, 0 deletions
diff --git a/devtools/client/inspector/markup/test/browser_markup_toggle_02.js b/devtools/client/inspector/markup/test/browser_markup_toggle_02.js
new file mode 100644
index 000000000..481f0bf58
--- /dev/null
+++ b/devtools/client/inspector/markup/test/browser_markup_toggle_02.js
@@ -0,0 +1,49 @@
+/* vim: set 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 toggling (expand/collapse) elements by dbl-clicking on tag lines
+
+const TEST_URL = URL_ROOT + "doc_markup_toggle.html";
+
+add_task(function* () {
+  let {inspector, testActor} = yield openInspectorForURL(TEST_URL);
+
+  info("Getting the container for the UL parent element");
+  let container = yield getContainerForSelector("ul", inspector);
+
+  info("Dbl-clicking on the UL parent expander, and waiting for children");
+  let onChildren = waitForChildrenUpdated(inspector);
+  let onUpdated = inspector.once("inspector-updated");
+  EventUtils.synthesizeMouseAtCenter(container.tagLine, {clickCount: 2},
+    inspector.markup.doc.defaultView);
+  yield onChildren;
+  yield onUpdated;
+
+  info("Checking that child LI elements have been created");
+  let numLi = yield testActor.getNumberOfElementMatches("li");
+  for (let i = 0; i < numLi; i++) {
+    let liContainer = yield getContainerForSelector(
+      "li:nth-child(" + (i + 1) + ")", inspector);
+    ok(liContainer, "A container for the child LI element was created");
+  }
+  ok(container.expanded, "Parent UL container is expanded");
+
+  info("Dbl-clicking again on the UL expander");
+  // No need to wait, this is a local, synchronous operation where nodes are
+  // only hidden from the view, not destroyed
+  EventUtils.synthesizeMouseAtCenter(container.tagLine, {clickCount: 2},
+    inspector.markup.doc.defaultView);
+
+  info("Checking that child LI elements have been hidden");
+  numLi = yield testActor.getNumberOfElementMatches("li");
+  for (let i = 0; i < numLi; i++) {
+    let liContainer = yield getContainerForSelector(
+      "li:nth-child(" + (i + 1) + ")", inspector);
+    is(liContainer.elt.getClientRects().length, 0,
+      "The container for the child LI element was hidden");
+  }
+  ok(!container.expanded, "Parent UL container is collapsed");
+});