1 files changed, 75 insertions, 0 deletions
diff --git a/devtools/client/inspector/test/browser_inspector_select-last-selected.js b/devtools/client/inspector/test/browser_inspector_select-last-selected.js
new file mode 100644
index 0000000000..fe56ff5ae7
--- /dev/null
+++ b/devtools/client/inspector/test/browser_inspector_select-last-selected.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+requestLongerTimeout(2);
+
+// Checks that the expected default node is selected after a page navigation or
+// a reload.
+var PAGE_1 = URL_ROOT_SSL + "doc_inspector_select-last-selected-01.html";
+var PAGE_2 = URL_ROOT_SSL + "doc_inspector_select-last-selected-02.html";
+
+// An array of test cases with following properties:
+// - url: URL to navigate to. If URL == content.location, reload instead.
+// - nodeToSelect: a selector for a node to select before navigation. If null,
+//                 whatever is selected stays selected.
+// - selectedNode: a selector for a node that is selected after navigation.
+var TEST_DATA = [
+  {
+    url: PAGE_1,
+    nodeToSelect: "#id1",
+    selectedNode: "#id1",
+  },
+  {
+    url: PAGE_1,
+    nodeToSelect: "#id2",
+    selectedNode: "#id2",
+  },
+  {
+    url: PAGE_1,
+    nodeToSelect: "#id3",
+    selectedNode: "#id3",
+  },
+  {
+    url: PAGE_1,
+    nodeToSelect: "#id4",
+    selectedNode: "#id4",
+  },
+  {
+    url: PAGE_2,
+    nodeToSelect: null,
+    selectedNode: "body",
+  },
+  {
+    url: PAGE_1,
+    nodeToSelect: "#id5",
+    selectedNode: "body",
+  },
+  {
+    url: PAGE_2,
+    nodeToSelect: null,
+    selectedNode: "body",
+  },
+];
+
+add_task(async function () {
+  const { inspector } = await openInspectorForURL(PAGE_1);
+
+  for (const { url, nodeToSelect, selectedNode } of TEST_DATA) {
+    if (nodeToSelect) {
+      info("Selecting node " + nodeToSelect + " before navigation.");
+      await selectNode(nodeToSelect, inspector);
+    }
+
+    await navigateTo(url);
+
+    const nodeFront = await getNodeFront(selectedNode, inspector);
+    ok(nodeFront, "Got expected node front");
+    is(
+      inspector.selection.nodeFront,
+      nodeFront,
+      selectedNode + " is selected after navigation."
+    );
+  }
+});