1 files changed, 104 insertions, 0 deletions
diff --git a/devtools/client/accessibility/test/browser/browser_accessibility_tree_audit_long.js b/devtools/client/accessibility/test/browser/browser_accessibility_tree_audit_long.js
new file mode 100644
index 0000000000..a8e295c504
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+++ b/devtools/client/accessibility/test/browser/browser_accessibility_tree_audit_long.js
@@ -0,0 +1,104 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* global toggleMenuItem, TREE_FILTERS_MENU_ID */
+
+const header =
+  '<h1 style="color:rgba(255,0,0,0.1); ' +
+  'background-color:rgba(255,255,255,1);">header</h1>';
+
+const TEST_URI = `<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>Accessibility Panel Test</title>
+  </head>
+  <body>
+    ${header.repeat(20)}
+  </body>
+</html>`;
+
+const docRow = {
+  role: "document",
+  name: `"Accessibility Panel Test"`,
+};
+const headingRow = {
+  role: "heading",
+  name: `"header"`,
+};
+const textLeafRow = {
+  role: "text leaf",
+  name: `"header"contrast`,
+  badges: ["contrast"],
+};
+const audit = new Array(20).fill(textLeafRow);
+
+const auditInitial = audit.map(check => ({ ...check }));
+auditInitial[0].selected = true;
+
+const auditSecondLastSelected = audit.map(check => ({ ...check }));
+auditSecondLastSelected[19].selected = true;
+
+const resetAfterAudit = [docRow];
+for (let i = 0; i < 20; i++) {
+  resetAfterAudit.push(headingRow);
+  resetAfterAudit.push({ ...textLeafRow, selected: i === 19 });
+}
+
+/**
+ * Test data has the format of:
+ * {
+ *   desc     {String}    description for better logging
+ *   setup    {Function}  An optional setup that needs to be performed before
+ *                        the state of the tree and the sidebar can be checked.
+ *   expected {JSON}      An expected states for the tree and the sidebar.
+ * }
+ */
+const tests = [
+  {
+    desc: "Check initial state.",
+    expected: {
+      tree: [{ ...docRow, selected: true }],
+    },
+  },
+  {
+    desc: "Run an audit from a11y panel toolbar by activating a filter.",
+    setup: async ({ doc, toolbox }) => {
+      await toggleMenuItem(doc, toolbox.doc, TREE_FILTERS_MENU_ID, 1);
+    },
+    expected: {
+      tree: auditInitial,
+    },
+  },
+  {
+    desc: "Select a row that is guaranteed to have to be scrolled into view.",
+    setup: async ({ doc }) => {
+      selectRow(doc, 0);
+      EventUtils.synthesizeKey("VK_END", {}, doc.defaultView);
+    },
+    expected: {
+      tree: auditSecondLastSelected,
+    },
+  },
+  {
+    desc: "Click on the filter again.",
+    setup: async ({ doc, toolbox }) => {
+      await toggleMenuItem(doc, toolbox.doc, TREE_FILTERS_MENU_ID, 1);
+    },
+    expected: {
+      tree: resetAfterAudit,
+    },
+  },
+];
+
+/**
+ * Simple test that checks content of the Accessibility panel tree when the
+ * audit is activated via the panel's toolbar and the selection persists when
+ * the filter is toggled off.
+ */
+addA11yPanelTestsTask(
+  tests,
+  TEST_URI,
+  "Test Accessibility panel tree with persistent selected row."
+);