File: test_ext_runtime_connect_twoway.html

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<!DOCTYPE HTML>
<html>
<head>
  <title>WebExtension test</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
  <script type="text/javascript" src="head.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
</head>
<body>

<script>
"use strict";

add_task(async function test_connect_bidirectionally_and_postMessage() {
  function background() {
    let onConnectCount = 0;
    browser.runtime.onConnect.addListener(port => {
      // 3. onConnect by connect() from CS.
      browser.test.assertEq("from-cs", port.name);
      browser.test.assertEq(1, ++onConnectCount,
                            "BG onConnect should be called once");

      let tabId = port.sender.tab.id;
      browser.test.assertTrue(tabId, "content script must have a tab ID");

      let port2;
      let postMessageCount1 = 0;
      port.onMessage.addListener(msg => {
        // 11. port.onMessage by port.postMessage in CS.
        browser.test.assertEq("from CS to port", msg);
        browser.test.assertEq(1, ++postMessageCount1,
                              "BG port.onMessage should be called once");

        // 12. should trigger port2.onMessage in CS.
        port2.postMessage("from BG to port2");
      });

      // 4. Should trigger onConnect in CS.
      port2 = browser.tabs.connect(tabId, {name: "from-bg"});
      let postMessageCount2 = 0;
      port2.onMessage.addListener(msg => {
        // 7. onMessage by port2.postMessage in CS.
        browser.test.assertEq("from CS to port2", msg);
        browser.test.assertEq(1, ++postMessageCount2,
                              "BG port2.onMessage should be called once");

        // 8. Should trigger port.onMessage in CS.
        port.postMessage("from BG to port");
      });
    });

    // 1. Notify test runner to create a new tab.
    browser.test.sendMessage("ready");
  }

  function contentScript() {
    let onConnectCount = 0;
    let port;
    browser.runtime.onConnect.addListener(port2 => {
      // 5. onConnect by connect() from BG.
      browser.test.assertEq("from-bg", port2.name);
      browser.test.assertEq(1, ++onConnectCount,
                            "CS onConnect should be called once");

      let postMessageCount2 = 0;
      port2.onMessage.addListener(msg => {
        // 12. port2.onMessage by port2.postMessage in BG.
        browser.test.assertEq("from BG to port2", msg);
        browser.test.assertEq(1, ++postMessageCount2,
                              "CS port2.onMessage should be called once");

        // TODO(robwu): Do not explicitly disconnect, it should not be a problem
        // if we keep the ports open. However, not closing the ports causes the
        // test to fail with NS_ERROR_NOT_INITIALIZED in ExtensionUtils.jsm, in
        // Port.prototype.disconnect (nsIMessageSender.sendAsyncMessage).
        port.disconnect();
        port2.disconnect();
        browser.test.notifyPass("ping pong done");
      });
      // 6. should trigger port2.onMessage in BG.
      port2.postMessage("from CS to port2");
    });

    // 2. should trigger onConnect in BG.
    port = browser.runtime.connect({name: "from-cs"});
    let postMessageCount1 = 0;
    port.onMessage.addListener(msg => {
      // 9. onMessage by port.postMessage in BG.
      browser.test.assertEq("from BG to port", msg);
      browser.test.assertEq(1, ++postMessageCount1,
                            "CS port.onMessage should be called once");

      // 10. should trigger port.onMessage in BG.
      port.postMessage("from CS to port");
    });
  }

  let extensionData = {
    background,
    manifest: {
      content_scripts: [{
        js: ["contentscript.js"],
        matches: ["*://mochi.test/*/file_sample.html"],
      }],
    },
    files: {
      "contentscript.js": contentScript,
    },
  };

  let extension = ExtensionTestUtils.loadExtension(extensionData);
  await extension.startup();
  info("extension loaded");

  await extension.awaitMessage("ready");

  let win = window.open("file_sample.html");
  await extension.awaitFinish("ping pong done");
  win.close();

  await extension.unload();
  info("extension unloaded");
});

// Regression test for https://bugzilla.mozilla.org/show_bug.cgi?id=1931902
add_task(async function test_disconnect_on_connect() {
  function background() {
    browser.runtime.onConnect.addListener(port => {
      browser.test.assertEq("from_cs", port.name);
      port.onDisconnect.addListener(() => {
        browser.test.assertEq(null, port.error, "Disconnect without error");

        // This should trigger onConnect + onDisconnect in contentScript.
        browser.tabs.connect(port.sender.tab.id, { name: "bye" }).disconnect();
      });
    });
    browser.test.sendMessage("ready");
  }
  function contentScript() {
    browser.runtime.onConnect.addListener(port => {
      browser.test.assertEq("bye", port.name);
      port.onDisconnect.addListener(() => {
        browser.test.assertEq(null, port.error, "Disconnect without error");
        browser.test.notifyPass("ping pong done");
      });
    });
    // This should trigger onConnect + onDisconnect in background.
    browser.runtime.connect({ name: "from_cs" }).disconnect();
  }
  let extension = ExtensionTestUtils.loadExtension({
    background,
    manifest: {
      content_scripts: [{
        js: ["contentscript.js"],
        matches: ["*://mochi.test/*/file_sample.html"],
      }],
    },
    files: {
      "contentscript.js": contentScript,
    },
  });
  await extension.startup();
  info("extension loaded");

  await extension.awaitMessage("ready");

  let win = window.open("file_sample.html");
  await extension.awaitFinish("ping pong done");
  win.close();

  await extension.unload();
  info("extension unloaded");
});
</script>
</body>