extensions/test/data/api_test/printer_provider/usb_printers/test.js

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 chrome.test.sendMessage('loaded', function(test) {
   6   chrome.test.runTests([function printTest() {
   7     if (test == 'NO_LISTENER') {
   8       chrome.test.sendMessage('ready');
   9       chrome.test.succeed();
  10       return;
  11     }
  12
  13     chrome.printerProvider.onGetUsbPrinterInfoRequested.addListener(
  14         function(device, callback) {
  15           chrome.test.assertFalse(!!chrome.printerProviderInternal);
  16           chrome.test.assertTrue(!!callback);
  17
  18           if (test == 'EMPTY_RESPONSE') {
  19             callback();
  20           } else {
  21             callback({
  22               'id': 'usbDevice-' + device.device,
  23               'name': 'Test Printer',
  24               'description': 'This printer is a USB device.',
  25             });
  26           }
  27
  28           chrome.test.assertThrows(
  29               callback,
  30               [],
  31               'Event callback must not be called more than once.');
  32
  33           chrome.test.succeed();
  34         });
  35
  36     chrome.test.sendMessage('ready');
  37   }]);
  38 });