extensions/test/data/api_test/printer_provider/request_print/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 // Reads a blob content.
   6 // @param {!Blob} blob The blob to read.
   7 // @param {function(?string)} callback Called with the read blob content.
   8 //     the content will be null on error.
   9 function readBlob(blob, callback) {
  10   var reader = new FileReader();
  11   reader.onerror = function() { callback(null); };
  12   reader.onloadend = function() {
  13     callback(reader.result);
  14   }
  15   reader.readAsText(blob)
  16 }
  17
  18 // Invokes |callback| with |returnValue| and verified a subsequent callback
  19 // invocation throws an exception.
  20 function wrapPrintCallback(callback, returnValue) {
  21   callback(returnValue);
  22   chrome.test.assertThrows(
  23       callback,
  24       ['OK'],
  25       'Event callback must not be called more than once.');
  26 }
  27
  28 chrome.test.sendMessage('loaded', function(test) {
  29   chrome.test.runTests([function printTest() {
  30     if (test == 'NO_LISTENER') {
  31       chrome.test.sendMessage('ready');
  32       chrome.test.succeed();
  33       return;
  34     }
  35
  36     chrome.printerProvider.onPrintRequested.addListener(function(job,
  37                                                                  callback) {
  38       chrome.test.assertFalse(!!chrome.printerProviderInternal);
  39       chrome.test.assertTrue(!!job);
  40
  41       switch (test) {
  42         case 'IGNORE_CALLBACK':
  43           break;
  44         case 'ASYNC_RESPONSE':
  45           setTimeout(callback.bind(null, 'OK'), 0);
  46           break;
  47         case 'INVALID_VALUE':
  48           chrome.test.assertThrows(
  49               callback,
  50               ['XXX'],
  51               'Invalid value for argument 1. ' +
  52               'Value must be one of: ' +
  53               '[OK, FAILED, INVALID_TICKET, INVALID_DATA].');
  54           break;
  55         case 'FAILED':
  56         case 'INVALID_TICKET':
  57         case 'INVALID_DATA':
  58           wrapPrintCallback(callback, test);
  59           break;
  60         case 'OK':
  61           readBlob(job.document, function(content) {
  62             wrapPrintCallback(callback, !!content ? 'OK' : 'INVALID_DATA');
  63
  64             if (content)
  65               chrome.test.assertEq('bytes', content);
  66
  67             chrome.test.assertEq('Print job', job.title);
  68
  69             chrome.test.succeed();
  70           });
  71
  72           // Test will end asynchronously.
  73           return;
  74         default:
  75           callback('FAILED');
  76           chrome.test.fail('Invalid input');
  77           return;
  78       }
  79
  80       chrome.test.succeed();
  81     });
  82
  83     chrome.test.sendMessage('ready');
  84   }]);
  85 });