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

components/autofill/core/browser/autofill_external_delegate_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 <vector>
 
 #include "base/compiler_specific.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 27 matching lines @@
 class MockAutofillDriver : public TestAutofillDriver {
  public:
   MockAutofillDriver() {}
   // Mock methods to enable testability.
   MOCK_METHOD1(SetRendererActionOnFormDataReception,
                void(RendererFormDataAction action));
   MOCK_METHOD1(RendererShouldAcceptDataListSuggestion,
                void(const base::string16&));
   MOCK_METHOD0(RendererShouldClearFilledForm, void());
   MOCK_METHOD0(RendererShouldClearPreviewedForm, void());
+  MOCK_METHOD1(RendererShouldPreviewAutoCompleteNode,
+               void(const base::string16&));
   MOCK_METHOD1(RendererShouldSetNodeText, void(const base::string16&));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockAutofillDriver);
 };
 
 class MockAutofillManagerDelegate
     : public autofill::TestAutofillManagerDelegate {
  public:
   MockAutofillManagerDelegate() {}
@@ skipping 284 matching lines @@
 }
 
 // Test that the Autofill delegate doesn't try and fill a form with a
 // negative unique id.
 TEST_F(AutofillExternalDelegateUnitTest, ExternalDelegateInvalidUniqueId) {
   // Ensure it doesn't try to preview the negative id.
   EXPECT_CALL(*autofill_manager_, OnFillAutofillFormData(_, _, _, _)).Times(0);
   EXPECT_CALL(*autofill_driver_,
               SetRendererActionOnFormDataReception(_)).Times(0);
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
-  external_delegate_->DidSelectSuggestion(-1);
+  external_delegate_->DidSelectSuggestion(-1, ASCIIToUTF16(""));

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

nit: Prefer "base::string16()" to "ASCIIToUTF16("")".

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

Done.

 
   // Ensure it doesn't try to fill the form in with the negative id.
   EXPECT_CALL(manager_delegate_, HideAutofillPopup());
   EXPECT_CALL(*autofill_manager_, OnFillAutofillFormData(_, _, _, _)).Times(0);
   EXPECT_CALL(*autofill_driver_,
               SetRendererActionOnFormDataReception(_)).Times(0);
   external_delegate_->DidAcceptSuggestion(base::string16(), -1);
 }
 
 // Test that the ClearPreview call is only sent if the form was being previewed
 // (i.e. it isn't autofilling a password).
 TEST_F(AutofillExternalDelegateUnitTest, ExternalDelegateClearPreviewedForm) {
   // Called by DidSelectSuggestion, add expectation to remove warning.
   EXPECT_CALL(*autofill_manager_, OnFillAutofillFormData(_, _, _, _));
 
   // Ensure selecting a new password entries or Autofill entries will
   // cause any previews to get cleared.
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
   external_delegate_->DidSelectSuggestion(
-      WebAutofillClient::MenuItemIDPasswordEntry);
+      WebAutofillClient::MenuItemIDPasswordEntry, ASCIIToUTF16("baz foo"));
 
   EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
   EXPECT_CALL(*autofill_driver_, SetRendererActionOnFormDataReception(
       AutofillDriver::FORM_DATA_ACTION_PREVIEW));
-  external_delegate_->DidSelectSuggestion(1);
+  external_delegate_->DidSelectSuggestion(1, ASCIIToUTF16("baz foo"));
+
+  // Ensure selecting an AutoComplete entries will cause any previews to

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

nit: "an AutoComplete entries" -> "an autocomplete entry"

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

Done.

+  // get cleared.
+  EXPECT_CALL(*autofill_driver_, RendererShouldClearPreviewedForm()).Times(1);
+  external_delegate_->DidSelectSuggestion(
+      WebAutofillClient::MenuItemIDAutocompleteEntry, ASCIIToUTF16("baz foo"));
 }
 
 // Test that the popup is hidden once we are done editing the autofill field.
 TEST_F(AutofillExternalDelegateUnitTest,
        ExternalDelegateHidePopupAfterEditing) {
   EXPECT_CALL(manager_delegate_, ShowAutofillPopup(_, _, _, _, _, _, _));
   autofill::GenerateTestAutofillPopup(external_delegate_.get());
 
   EXPECT_CALL(manager_delegate_, HideAutofillPopup());
   external_delegate_->DidEndTextFieldEditing();
@@ skipping 96 matching lines @@
   EXPECT_CALL(manager_delegate_, HideAutofillPopup());
   base::string16 dummy_string(ASCIIToUTF16("baz foo"));
   EXPECT_CALL(*autofill_driver_,
               RendererShouldSetNodeText(dummy_string));
   external_delegate_->DidAcceptSuggestion(
       dummy_string,
       WebAutofillClient::MenuItemIDAutocompleteEntry);
 }
 
 }  // namespace autofill