test_get_printer_basic_attributes.html

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<!DOCTYPE HTML>

<html>

<head>

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

</head>

<body onload="run()">

<script type="application/javascript">

SimpleTest.waitForExplicitFinish();

async function run() {

  try {

    let printerList = Cc["@mozilla.org/gfx/printerlist;1"].getService(

      Ci.nsIPrinterList

);

    let printers = await printerList.printers;

    for (let printer of printers) {

      printer.QueryInterface(Ci.nsIPrinter);

      info(`Listing basic attributes for ${printer.name}:`);

      let [supportsDuplex, supportsColor] = await Promise.all([printer.supportsDuplex, printer.supportsColor]);

      info(`* supportsDuplex: ${supportsDuplex}`);

      info(`* supportsColor: ${supportsColor}`);

    ok(true, "Retrieved printer basic attributes successfully.");

  } catch (e) {

    ok(false, `Error thrown while retrieving printer basic attributes: ${e}.`);

    console.error(e);

  SimpleTest.finish();

</script>

</body>

</html>