Add "previewing on hover" support for single-field autocomplete input

components/autofill/content/browser/autofill_driver_impl_unittest.cc

 // Copyright 2013 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.
 
 #include <algorithm>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 121 matching lines @@
   bool GetString16FromMessageWithID(uint32 messageID, base::string16* value) {
     const IPC::Message* message =
         process()->sink().GetFirstMessageMatching(messageID);
     if (!message)
       return false;
     Tuple1<base::string16> autofill_param;
     switch (messageID) {
       case AutofillMsg_SetNodeText::ID:
         AutofillMsg_SetNodeText::Read(message, &autofill_param);
         break;
+      case AutofillMsg_PreviewAutoCompleteNode::ID:
+        AutofillMsg_PreviewAutoCompleteNode::Read(message, &autofill_param);
+        break;
       case AutofillMsg_AcceptDataListSuggestion::ID:
         AutofillMsg_AcceptDataListSuggestion::Read(message, &autofill_param);
         break;
     case AutofillMsg_AcceptPasswordAutofillSuggestion::ID:
         AutofillMsg_AcceptPasswordAutofillSuggestion::Read(
             message,
             &autofill_param);
         break;
       default:
         NOTREACHED();
@@ skipping 129 matching lines @@
   EXPECT_TRUE(HasMessageMatchingID(AutofillMsg_ClearPreviewedForm::ID));
 }
 
 TEST_F(AutofillDriverImplTest, SetNodeText) {
   base::string16 input_value(base::ASCIIToUTF16("barqux"));
   base::string16 output_value;
   driver_->RendererShouldSetNodeText(input_value);
   EXPECT_TRUE(GetString16FromMessageWithID(AutofillMsg_SetNodeText::ID,
                                            &output_value));
   EXPECT_EQ(input_value, output_value);
 }

[Ilya Sherman, 2014/02/22 05:59:51]

nit: Please add a blank line after this one.

[ziran.sun, 2014/02/27 15:38:11]

Done.

+TEST_F(AutofillDriverImplTest, PreviewAutoCompleteNode) {
+  base::string16 input_value(base::ASCIIToUTF16("barqux"));
+  base::string16 output_value;
+  driver_->RendererShouldPreviewAutoCompleteNode(input_value);
+  EXPECT_TRUE(GetString16FromMessageWithID(
+      AutofillMsg_PreviewAutoCompleteNode::ID,
+      &output_value));
+  EXPECT_EQ(input_value, output_value);
+}
 
 }  // namespace autofill