1 files changed, 124 insertions, 0 deletions
diff --git a/testing/mochitest/BrowserTestUtils/content/content-task.js b/testing/mochitest/BrowserTestUtils/content/content-task.js
new file mode 100644
index 0000000000..22847d64af
--- /dev/null
+++ b/testing/mochitest/BrowserTestUtils/content/content-task.js
@@ -0,0 +1,124 @@
+/* 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/. */
+
+/* eslint-env mozilla/frame-script */
+
+"use strict";
+
+let { ContentTaskUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/ContentTaskUtils.sys.mjs"
+);
+const { Assert: AssertCls } = ChromeUtils.importESModule(
+  "resource://testing-common/Assert.sys.mjs"
+);
+const { setTimeout } = ChromeUtils.importESModule(
+  "resource://gre/modules/Timer.sys.mjs"
+);
+
+// Injects EventUtils into ContentTask scope. To avoid leaks, this does not hold on
+// to the window global. This means you **need** to pass the window as an argument to
+// the individual EventUtils functions.
+// See SimpleTest/EventUtils.js for documentation.
+var EventUtils = {
+  _EU_Ci: Ci,
+  _EU_Cc: Cc,
+  KeyboardEvent: content.KeyboardEvent,
+  navigator: content.navigator,
+  setTimeout,
+  window: {},
+};
+
+EventUtils.synthesizeClick = element =>
+  new Promise(resolve => {
+    element.addEventListener(
+      "click",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+
+    EventUtils.synthesizeMouseAtCenter(
+      element,
+      { type: "mousedown", isSynthesized: false },
+      content
+    );
+    EventUtils.synthesizeMouseAtCenter(
+      element,
+      { type: "mouseup", isSynthesized: false },
+      content
+    );
+  });
+
+try {
+  Services.scriptloader.loadSubScript(
+    "chrome://mochikit/content/tests/SimpleTest/EventUtils.js",
+    EventUtils
+  );
+} catch (e) {
+  // There are some xpcshell tests which may use ContentTask.
+  // Just ignore if loading EventUtils fails. Tests that need it
+  // will fail anyway.
+  EventUtils = null;
+}
+
+addMessageListener("content-task:spawn", async function (msg) {
+  let id = msg.data.id;
+  let source = msg.data.runnable || "()=>{}";
+
+  function getStack(aStack) {
+    let frames = [];
+    for (let frame = aStack; frame; frame = frame.caller) {
+      frames.push(frame.filename + ":" + frame.name + ":" + frame.lineNumber);
+    }
+    return frames.join("\n");
+  }
+
+  var Assert = new AssertCls((err, message, stack) => {
+    sendAsyncMessage("content-task:test-result", {
+      id,
+      condition: !err,
+      name: err ? err.message : message,
+      stack: getStack(err ? err.stack : stack),
+    });
+  });
+
+  /* eslint-disable no-unused-vars */
+  var ok = Assert.ok.bind(Assert);
+  var is = Assert.equal.bind(Assert);
+  var isnot = Assert.notEqual.bind(Assert);
+
+  function todo(expr, name) {
+    sendAsyncMessage("content-task:test-todo", { id, expr, name });
+  }
+
+  function todo_is(a, b, name) {
+    sendAsyncMessage("content-task:test-todo_is", { id, a, b, name });
+  }
+
+  function info(name) {
+    sendAsyncMessage("content-task:test-info", { id, name });
+  }
+  /* eslint-enable no-unused-vars */
+
+  try {
+    let runnablestr = `
+      (() => {
+        return (${source});
+      })();`;
+
+    // eslint-disable-next-line no-eval
+    let runnable = eval(runnablestr);
+    let result = await runnable.call(this, msg.data.arg);
+    sendAsyncMessage("content-task:complete", {
+      id,
+      result,
+    });
+  } catch (ex) {
+    sendAsyncMessage("content-task:complete", {
+      id,
+      error: ex.toString(),
+    });
+  }
+});