toolkit/components/webextensions/test/xpcshell/test_ext_runtime_sendMessage_self.js


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/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set sts=2 sw=2 et tw=80: */

"use strict";

add_task(function* test_sendMessage_to_self_should_not_trigger_onMessage() {
  async function background() {
    browser.runtime.onMessage.addListener(msg => {
      browser.test.assertEq("msg from child", msg);
      browser.test.notifyPass("sendMessage did not call same-frame onMessage");
    });

    browser.test.onMessage.addListener(msg => {
      browser.test.assertEq("sendMessage with a listener in another frame", msg);
      browser.runtime.sendMessage("should only reach another frame");
    });

    await browser.test.assertRejects(
      browser.runtime.sendMessage("should not trigger same-frame onMessage"),
      "Could not establish connection. Receiving end does not exist.");

    let anotherFrame = document.createElement("iframe");
    anotherFrame.src = browser.extension.getURL("extensionpage.html");
    document.body.appendChild(anotherFrame);
  }

  function lastScript() {
    browser.runtime.onMessage.addListener(msg => {
      browser.test.assertEq("should only reach another frame", msg);
      browser.runtime.sendMessage("msg from child");
    });
    browser.test.sendMessage("sendMessage callback called");
  }

  let extensionData = {
    background,
    files: {
      "lastScript.js": lastScript,
      "extensionpage.html": `<!DOCTYPE html><meta charset="utf-8"><script src="lastScript.js"></script>`,
    },
  };

  let extension = ExtensionTestUtils.loadExtension(extensionData);
  yield extension.startup();

  yield extension.awaitMessage("sendMessage callback called");
  extension.sendMessage("sendMessage with a listener in another frame");
  yield extension.awaitFinish("sendMessage did not call same-frame onMessage");

  yield extension.unload();
});