Define Print Preview default printer selection policy

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 52 matching lines @@
   preLoad: function() {
     window.addEventListener('DOMContentLoaded', function() {
       function NativeLayerStub() {
         cr.EventTarget.call(this);
       }
       NativeLayerStub.prototype = {
         __proto__: cr.EventTarget.prototype,
         startGetInitialSettings: function() {},
         startGetLocalDestinations: function() {},
         startGetPrivetDestinations: function() {},
+        startGetExtensionDestinations: function() {},
         startGetLocalDestinationCapabilities: function(destinationId) {}
       };
       var oldNativeLayerEventType = print_preview.NativeLayer.EventType;
       var oldDuplexMode = print_preview.NativeLayer.DuplexMode;
       print_preview.NativeLayer = NativeLayerStub;
       print_preview.NativeLayer.EventType = oldNativeLayerEventType;
       print_preview.NativeLayer.DuplexMode = oldDuplexMode;
 
       function CloudPrintInterfaceStub() {
         cr.EventTarget.call(this);
@@ skipping 90 matching lines @@
       false /*hidePrintWithSystemDialogLink*/,
       ',' /*thousandsDelimeter*/,
       '.' /*decimalDelimeter*/,
       1 /*unitType*/,
       true /*isDocumentModifiable*/,
       'title' /*documentTitle*/,
       true /*documentHasSelection*/,
       false /*selectionOnly*/,
       'FooDevice' /*systemDefaultDestinationId*/,
       null /*serializedAppStateStr*/,
-      false /*documentHasSelection*/);
+      null /*serializedDefaultDestinationSelectionRulesStr*/);
     this.localDestinationInfos_ = [
       { printerName: 'FooName', deviceName: 'FooDevice' },
       { printerName: 'BarName', deviceName: 'BarDevice' }
     ];
     this.nativeLayer_ = printPreview.nativeLayer_;
 
     testing.Test.disableAnimationsAndTransitions();
   }
 };
 
@@ skipping 137 matching lines @@
 TEST_F('PrintPreviewWebUITest', 'TestPrintPreviewRestoreLocalDestination',
     function() {
   this.initialSettings_.serializedAppStateStr_ =
       '{"version":2,"selectedDestinationId":"ID",' +
       '"selectedDestinationOrigin":"local"}';
   this.setInitialSettings();
 
   testDone();
 });
 
+TEST_F('PrintPreviewWebUITest',
+    'TestPrintPreviewDefaultDestinationSelectionRules', function() {
+  // It also makes sure these rules do override system default destination.
+  this.initialSettings_.serializedDefaultDestinationSelectionRulesStr_ =
+      '{"namePattern":".*Bar.*"}';
+  this.setInitialSettings();
+  this.setLocalDestinations();
+
+  assertEquals(
+      'BarDevice', printPreview.destinationStore_.selectedDestination.id);
+
+  testDone();
+});
+
 TEST_F('PrintPreviewWebUITest', 'TestSystemDialogLinkIsHiddenInAppKioskMode',
     function() {
   if (cr.isChromeOS) {
     assertEquals(null, $('system-dialog-link'));
   } else {
     this.initialSettings_.isInAppKioskMode_ = true;
     this.setInitialSettings();
 
     checkElementDisplayed($('system-dialog-link'), false);
   }
@@ skipping 602 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');
 });