Print Preview: Support the duplex preset in PDFs.

chrome/test/data/webui/print_preview.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * Test fixture for print preview WebUI testing.
  * @constructor
  * @extends {testing.Test}
  */
 function PrintPreviewWebUITest() {
@@ skipping 482 matching lines @@
   checkSectionVisible(otherOptions, true);
   checkElementDisplayed(
       otherOptions.querySelector('.fit-to-page-container'), true);
   expectFalse(
       otherOptions.querySelector('.fit-to-page-checkbox').checked);
 
   this.waitForAnimationToEnd('other-options-collapsible');
 });
 
 // When the number of copies print preset is set for source 'PDF', we update
-// copies value if capability is supported by printer.
+// the copies value if capability is supported by printer.
 TEST_F('PrintPreviewWebUITest', 'CheckNumCopiesPrintPreset', function() {
   this.initialSettings_.isDocumentModifiable_ = false;
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   // Indicate that the number of copies print preset is set for source PDF.
   var printPresetOptions = {
     disableScaling: true,
     copies: 2
   };
   var printPresetOptionsEvent = new Event(
       print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
   printPresetOptionsEvent.optionsFromDocument = printPresetOptions;
   this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
 
   checkSectionVisible($('copies-settings'), true);
   expectEquals(
       printPresetOptions.copies,
       parseInt($('copies-settings').querySelector('.copies').value));
 
   this.waitForAnimationToEnd('other-options-collapsible');
 });
 
+// When the duplex print preset is set for source 'PDF', we update the
+// duplex setting if capability is supported by printer.
+TEST_F('PrintPreviewWebUITest', 'CheckDuplexPrintPreset', function() {
+  this.initialSettings_.isDocumentModifiable_ = false;
+  this.setInitialSettings();
+  this.setLocalDestinations();
+  this.setCapabilities(getCddTemplate("FooDevice"));
+
+  // Indicate that the duplex print preset is set to "long edge" for source PDF.
+  var printPresetOptions = {
+    duplex: 1
+  };
+  var printPresetOptionsEvent = new Event(
+      print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+  printPresetOptionsEvent.optionsFromDocument = printPresetOptions;
+  this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
+
+  var otherOptions = $('other-options-settings');
+  checkSectionVisible(otherOptions, true);
+  checkElementDisplayed(otherOptions.querySelector('.duplex-container'), true);
+  expectTrue(otherOptions.querySelector('.duplex-checkbox').checked);
+
+  this.waitForAnimationToEnd('other-options-collapsible');
+});
+
 // Make sure that custom margins controls are properly set up.
 TEST_F('PrintPreviewWebUITest', 'CustomMarginsControlsCheck', function() {
   this.setInitialSettings();
   this.setLocalDestinations();
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   printPreview.printTicketStore_.marginsType.updateValue(
       print_preview.ticket_items.MarginsType.Value.CUSTOM);
 
   ['left', 'top', 'right', 'bottom'].forEach(function(margin) {
@@ skipping 400 matching lines @@
   expectEquals(
       customLocalizedMediaName,
       mediaSelect.options[mediaSelect.selectedIndex].text);
   // Check the other media item.
   expectEquals(
       customMediaName,
       mediaSelect.options[mediaSelect.selectedIndex == 0 ? 1 : 0].text);
 
   this.waitForAnimationToEnd('more-settings');
 });