1 files changed, 158 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_accessibility_walker_audit.js b/devtools/server/tests/browser/browser_accessibility_walker_audit.js
new file mode 100644
index 0000000000..f5d90ee58a
--- /dev/null
+++ b/devtools/server/tests/browser/browser_accessibility_walker_audit.js
@@ -0,0 +1,158 @@
+/* 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";
+
+const {
+  accessibility: { AUDIT_TYPE, ISSUE_TYPE, SCORES },
+} = require("devtools/shared/constants");
+
+// Checks for the AccessibleWalkerActor audit.
+add_task(async function() {
+  const {
+    target,
+    a11yWalker,
+    parentAccessibility,
+  } = await initAccessibilityFrontsForUrl(
+    MAIN_DOMAIN + "doc_accessibility_audit.html"
+  );
+
+  const accessibles = [
+    {
+      name: "",
+      role: "document",
+      childCount: 2,
+      checks: {
+        [AUDIT_TYPE.CONTRAST]: null,
+        [AUDIT_TYPE.KEYBOARD]: null,
+        [AUDIT_TYPE.TEXT_LABEL]: {
+          score: SCORES.FAIL,
+          issue: ISSUE_TYPE.DOCUMENT_NO_TITLE,
+        },
+      },
+    },
+    {
+      name:
+        "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do " +
+        "eiusmod tempor incididunt ut labore et dolore magna aliqua.",
+      role: "paragraph",
+      childCount: 1,
+      checks: {
+        [AUDIT_TYPE.CONTRAST]: null,
+        [AUDIT_TYPE.KEYBOARD]: null,
+        [AUDIT_TYPE.TEXT_LABEL]: null,
+      },
+    },
+    {
+      name:
+        "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do " +
+        "eiusmod tempor incididunt ut labore et dolore magna aliqua.",
+      role: "text leaf",
+      childCount: 0,
+      checks: {
+        [AUDIT_TYPE.CONTRAST]: {
+          value: 4.0,
+          color: [255, 0, 0, 1],
+          backgroundColor: [255, 255, 255, 1],
+          isLargeText: false,
+          score: SCORES.FAIL,
+        },
+        [AUDIT_TYPE.KEYBOARD]: null,
+        [AUDIT_TYPE.TEXT_LABEL]: null,
+      },
+    },
+    {
+      name: "",
+      role: "paragraph",
+      childCount: 1,
+      checks: {
+        [AUDIT_TYPE.CONTRAST]: null,
+        [AUDIT_TYPE.KEYBOARD]: null,
+        [AUDIT_TYPE.TEXT_LABEL]: null,
+      },
+    },
+    {
+      name: "Accessible Paragraph",
+      role: "text leaf",
+      childCount: 0,
+      checks: {
+        [AUDIT_TYPE.CONTRAST]: {
+          value: 4.0,
+          color: [255, 0, 0, 1],
+          backgroundColor: [255, 255, 255, 1],
+          isLargeText: false,
+          score: SCORES.FAIL,
+        },
+        [AUDIT_TYPE.KEYBOARD]: null,
+        [AUDIT_TYPE.TEXT_LABEL]: null,
+      },
+    },
+  ];
+  const total = accessibles.length;
+  const auditProgress = [
+    { total, percentage: 20, completed: 1 },
+    { total, percentage: 40, completed: 2 },
+    { total, percentage: 60, completed: 3 },
+    { total, percentage: 80, completed: 4 },
+    { total, percentage: 100, completed: 5 },
+  ];
+
+  function findAccessible(name, role) {
+    return accessibles.find(
+      accessible => accessible.name === name && accessible.role === role
+    );
+  }
+
+  async function checkWalkerAudit(walker, expectedSize, options) {
+    info("Checking AccessibleWalker audit functionality");
+    const expectedProgress = Array.from(auditProgress);
+    const ancestries = await new Promise((resolve, reject) => {
+      const auditEventHandler = ({ type, ancestries: response, progress }) => {
+        switch (type) {
+          case "error":
+            walker.off("audit-event", auditEventHandler);
+            reject();
+            break;
+          case "completed":
+            walker.off("audit-event", auditEventHandler);
+            resolve(response);
+            is(expectedProgress.length, 0, "All progress events fired");
+            break;
+          case "progress":
+            SimpleTest.isDeeply(
+              progress,
+              expectedProgress.shift(),
+              "Progress data is correct"
+            );
+            break;
+          default:
+            break;
+        }
+      };
+
+      walker.on("audit-event", auditEventHandler);
+      walker.startAudit(options);
+    });
+
+    is(ancestries.length, expectedSize, "The size of ancestries is correct");
+    for (const ancestry of ancestries) {
+      for (const { accessible, children } of ancestry) {
+        checkA11yFront(
+          accessible,
+          findAccessible(accessibles.name, accessibles.role)
+        );
+        for (const child of children) {
+          checkA11yFront(child, findAccessible(child.name, child.role));
+        }
+      }
+    }
+  }
+
+  await checkWalkerAudit(a11yWalker, 3);
+  await checkWalkerAudit(a11yWalker, 2, { types: [AUDIT_TYPE.CONTRAST] });
+
+  await waitForA11yShutdown(parentAccessibility);
+  await target.destroy();
+  gBrowser.removeCurrentTab();
+});