1 files changed, 40 insertions, 0 deletions
diff --git a/devtools/client/dom/test/browser_dom_array.js b/devtools/client/dom/test/browser_dom_array.js
new file mode 100644
index 000000000..2813af320
--- /dev/null
+++ b/devtools/client/dom/test/browser_dom_array.js
@@ -0,0 +1,40 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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";
+
+const TEST_PAGE_URL = URL_ROOT + "page_array.html";
+const TEST_ARRAY = [
+  "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m",
+  "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"
+];
+
+/**
+ * Basic test that checks content of the DOM panel.
+ */
+add_task(function* () {
+  info("Test DOM Panel Array Expansion started");
+
+  let { panel } = yield addTestTab(TEST_PAGE_URL);
+
+  // Expand specified row and wait till children are displayed.
+  yield expandRow(panel, "_a");
+
+  // Verify that children is displayed now.
+  let childRows = getAllRowsForLabel(panel, "_a");
+
+  let item = childRows.pop();
+  is(item.name, "length", "length property is correct");
+  is(item.value, 26, "length property value is 26");
+
+  let i = 0;
+  for (let name in childRows) {
+    let row = childRows[name];
+
+    is(name, i++, `index ${name} is correct and sorted into the correct position`);
+    ok(typeof row.name === "number", "array index is displayed as a number");
+    is(TEST_ARRAY[name], row.value, `value for array[${name}] is ${row.value}`);
+  }
+});