waitForClipboard_sample.js

function test() {
  waitForExplicitFinish();

  // the value we expect to be on the clipboard
  const EXPECTED_VAL = "foo";

  // function that will setup the clipboard
  function setup() {
    Cc["@mozilla.org/widget/clipboardhelper;1"].
    getService(Ci.nsIClipboardHelper).
    copyString(EXPECTED_VAL);
  }

  function nextTest() {
    // Do something else here
    ok(true);
    finish();
  }

  waitForClipboard(EXPECTED_VAL, setup, nextTest, finish);
}