1 files changed, 214 insertions, 0 deletions
diff --git a/accessible/tests/browser/e10s/browser_caching_description.js b/accessible/tests/browser/e10s/browser_caching_description.js
new file mode 100644
index 0000000000..5b9e70ce07
--- /dev/null
+++ b/accessible/tests/browser/e10s/browser_caching_description.js
@@ -0,0 +1,214 @@
+/* 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";
+
+/* import-globals-from ../../mochitest/name.js */
+loadScripts({ name: "name.js", dir: MOCHITESTS_DIR });
+
+/**
+ * Test data has the format of:
+ * {
+ *   desc      {String}   description for better logging
+ *   expected  {String}   expected description value for a given accessible
+ *   attrs     {?Array}   an optional list of attributes to update
+ *   waitFor   {?Array}   an optional list of accessible events to wait for when
+ *                        attributes are updated
+ * }
+ */
+const tests = [
+  {
+    desc: "No description when there are no @alt, @title and @aria-describedby",
+    expected: "",
+  },
+  {
+    desc: "Description from @aria-describedby attribute",
+    attrs: [
+      {
+        attr: "aria-describedby",
+        value: "description",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "aria description",
+  },
+  {
+    desc:
+      "No description from @aria-describedby since it is the same as the " +
+      "@alt attribute which is used as the name",
+    attrs: [
+      {
+        attr: "alt",
+        value: "aria description",
+      },
+    ],
+    waitFor: [[EVENT_REORDER, matchContentDoc]],
+    expected: "",
+  },
+  {
+    desc:
+      "Description from @aria-describedby attribute when @alt and " +
+      "@aria-describedby are not the same",
+    attrs: [
+      {
+        attr: "aria-describedby",
+        value: "description2",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "another description",
+  },
+  {
+    desc:
+      "Description from @aria-describedby attribute when @title (used for " +
+      "name) and @aria-describedby are not the same",
+    attrs: [
+      {
+        attr: "alt",
+      },
+      {
+        attr: "title",
+        value: "title",
+      },
+    ],
+    waitFor: [[EVENT_REORDER, matchContentDoc]],
+    expected: "another description",
+  },
+  {
+    desc:
+      "No description from @aria-describedby since it is the same as the " +
+      "@title attribute which is used as the name",
+    attrs: [
+      {
+        attr: "title",
+        value: "another description",
+      },
+    ],
+    waitFor: [[EVENT_NAME_CHANGE, "image"]],
+    expected: "",
+  },
+  {
+    desc: "No description with only @title attribute which is used as the name",
+    attrs: [
+      {
+        attr: "aria-describedby",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "",
+  },
+  {
+    desc:
+      "Description from @title attribute when @alt and @atitle are not the " +
+      "same",
+    attrs: [
+      {
+        attr: "alt",
+        value: "aria description",
+      },
+    ],
+    waitFor: [[EVENT_REORDER, matchContentDoc]],
+    expected: "another description",
+  },
+  {
+    desc:
+      "No description from @title since it is the same as the @alt " +
+      "attribute which is used as the name",
+    attrs: [
+      {
+        attr: "alt",
+        value: "another description",
+      },
+    ],
+    waitFor: [[EVENT_NAME_CHANGE, "image"]],
+    expected: "",
+  },
+  {
+    desc:
+      "No description from @aria-describedby since it is the same as the " +
+      "@alt (used for name) and @title attributes",
+    attrs: [
+      {
+        attr: "aria-describedby",
+        value: "description2",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "",
+  },
+  {
+    desc:
+      "Description from @aria-describedby attribute when it is different " +
+      "from @alt (used for name) and @title attributes",
+    attrs: [
+      {
+        attr: "aria-describedby",
+        value: "description",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "aria description",
+  },
+  {
+    desc:
+      "No description from @aria-describedby since it is the same as the " +
+      "@alt attribute (used for name) but different from title",
+    attrs: [
+      {
+        attr: "alt",
+        value: "aria description",
+      },
+    ],
+    waitFor: [[EVENT_NAME_CHANGE, "image"]],
+    expected: "",
+  },
+  {
+    desc:
+      "Description from @aria-describedby attribute when @alt (used for " +
+      "name) and @aria-describedby are not the same but @title and " +
+      "aria-describedby are",
+    attrs: [
+      {
+        attr: "aria-describedby",
+        value: "description2",
+      },
+    ],
+    waitFor: [[EVENT_DESCRIPTION_CHANGE, "image"]],
+    expected: "another description",
+  },
+];
+
+/**
+ * Test caching of accessible object description
+ */
+addAccessibleTask(
+  `
+  <p id="description">aria description</p>
+  <p id="description2">another description</p>
+  <img id="image" />`,
+  async function(browser, accDoc) {
+    let imgAcc = findAccessibleChildByID(accDoc, "image");
+
+    for (let { desc, waitFor, attrs, expected } of tests) {
+      info(desc);
+      let onUpdate;
+      if (waitFor) {
+        onUpdate = waitForOrderedEvents(waitFor);
+      }
+      if (attrs) {
+        for (let { attr, value } of attrs) {
+          await invokeSetAttribute(browser, "image", attr, value);
+        }
+      }
+      await onUpdate;
+      // When attribute change (alt) triggers reorder event, accessible will
+      // become defunct.
+      if (isDefunct(imgAcc)) {
+        imgAcc = findAccessibleChildByID(accDoc, "image");
+      }
+      testDescr(imgAcc, expected);
+    }
+  },
+  { iframe: true, remoteIframe: true }
+);