Bug 1799156 - Test for writing unknown clipboard type. r=nika, a=RyanVM

  browser_wpi_base.js

[browser_pbrowser_creation_failure.js]

skip-if = !fission

[browser_child_clipboard_restricted.js]

/* 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/. */

add_task(async function() {

  // Create a new content tab to make sure the paste is cross-process.

  let tab = await BrowserTestUtils.openNewForegroundTab(

    gBrowser,

    "data:text/html,<br>"

  );

  let browser = tab.linkedBrowser;

  await SpecialPowers.spawn(browser, [], async function(arg) {

    const trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(

      Ci.nsITransferable

    );

    trans.init(null);

    const string = Cc["@mozilla.org/supports-string;1"].createInstance(

      Ci.nsISupportsString

    );

    string.data = "blablabla";

    trans.addDataFlavor("text/unknown");

    trans.setTransferData("text/unknown", string);

    trans.addDataFlavor("text/unicode");

    trans.setTransferData("text/unicode", string);

    // Write to clipboard.

    Services.clipboard.setData(trans, null, Ci.nsIClipboard.kGlobalClipboard);

  });

  // Wait for known.

  for (var i = 0; i < 20; i++) {

    if (

      Services.clipboard.hasDataMatchingFlavors(

        ["text/unicode"],

        Services.clipboard.kGlobalClipboard

      )

    ) {

      break;

    }

  }

  function readClipboard(flavor) {

    const trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(

      Ci.nsITransferable

    );

    trans.init(null);

    trans.addDataFlavor(flavor);

    Services.clipboard.getData(trans, Services.clipboard.kGlobalClipboard);

    let data = {};

    trans.getTransferData(flavor, data);

    return data.value.QueryInterface(Ci.nsISupportsString).data;

  }

  ok(

    Services.clipboard.hasDataMatchingFlavors(

      ["text/unicode"],

      Services.clipboard.kGlobalClipboard

    ),

    "clipboard should have text/unicode"

  );

  is(

    readClipboard("text/unicode"),

    "blablabla",

    "matching string for text/unicode"

  );

  ok(

    !Services.clipboard.hasDataMatchingFlavors(

      ["text/unknown"],

      Services.clipboard.kGlobalClipboard

    ),

    "clipboard should not have text/unknown"

  );

  let error = undefined;

  try {

    readClipboard("text/unknown");

  } catch (e) {

    error = e;

  }

  is(typeof error, "object", "reading text/unknown should fail");

  BrowserTestUtils.removeTab(tab);

});