Autofill - don't prompt to unmask a credit card if the number isn't needed.

components/autofill/core/browser/autofill_manager_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/format_macros.h"
 #include "base/memory/ref_counted.h"
@@ skipping 693 matching lines @@
         WillOnce((DoAll(testing::SaveArg<0>(response_query_id),
                         testing::SaveArg<2>(response_data))));
     FillAutofillFormData(input_query_id, input_form, input_field, unique_id);
   }
 
   int MakeFrontendID(const SuggestionBackendID& cc_sid,
                  const SuggestionBackendID& profile_sid) const {
     return autofill_manager_->MakeFrontendID(cc_sid, profile_sid);
   }
 
+  bool WillFillCreditCardNumber(const FormData& form,
+                                const FormFieldData& field) {
+    return autofill_manager_->WillFillCreditCardNumber(form, field);
+  }
+
  protected:
   base::MessageLoop message_loop_;
   TestAutofillClient autofill_client_;
   scoped_ptr<MockAutofillDriver> autofill_driver_;
   scoped_ptr<TestAutofillManager> autofill_manager_;
   scoped_ptr<TestAutofillExternalDelegate> external_delegate_;
   TestPersonalDataManager personal_data_;
 };
 
 class TestFormStructure : public FormStructure {
@@ skipping 741 matching lines @@
   FillAutofillFormDataAndSaveResults(kDefaultPageID, form, form.fields[0],
                                      MakeFrontendID(card_id, profile_id),
                                      &response_page_id, &response_data);
   ExpectFilledAddressFormElvis(response_page_id, response_data, kDefaultPageID,
                                false, true);
 
   EXPECT_EQ(1U, profile->use_count());
   EXPECT_NE(base::Time(), profile->use_date());
 }
 
+TEST_F(AutofillManagerTest, WillFillCreditCardNumber) {
+  // Set up our form data.
+  FormData form;
+  CreateTestCreditCardFormData(&form, true, false);
+  std::vector<FormData> forms(1, form);
+  FormsSeen(forms);
+
+  FormFieldData* number_field = nullptr;
+  FormFieldData* name_field = nullptr;
+  FormFieldData* month_field = nullptr;
+  for (size_t i = 0; i < form.fields.size(); ++i) {
+    if (form.fields[i].name == ASCIIToUTF16("cardnumber"))
+      number_field = &form.fields[i];
+    else if (form.fields[i].name == ASCIIToUTF16("nameoncard"))
+      name_field = &form.fields[i];
+    else if (form.fields[i].name == ASCIIToUTF16("ccmonth"))
+      month_field = &form.fields[i];
+  }
+
+  // Empty form - whole form is Autofilled.
+  EXPECT_TRUE(WillFillCreditCardNumber(form, *number_field));
+  EXPECT_TRUE(WillFillCreditCardNumber(form, *name_field));
+  // If the user has entered a value, it won't be overridden.
+  number_field->value = ASCIIToUTF16("gibberish");
+  EXPECT_TRUE(WillFillCreditCardNumber(form, *number_field));
+  EXPECT_FALSE(WillFillCreditCardNumber(form, *name_field));
+  number_field->value.clear();
+  EXPECT_TRUE(WillFillCreditCardNumber(form, *name_field));
+
+  // When part of the section is Autofilled, only fill the initiating field.
+  month_field->is_autofilled = true;
+  EXPECT_FALSE(WillFillCreditCardNumber(form, *name_field));
+  EXPECT_TRUE(WillFillCreditCardNumber(form, *number_field));
+}
+
 // Test that we correctly fill an address form from an auxiliary profile.
 TEST_F(AutofillManagerTest, FillAddressFormFromAuxiliaryProfile) {
   personal_data_.ClearAutofillProfiles();
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   autofill_client_.GetPrefs()->SetBoolean(
       ::autofill::prefs::kAutofillUseMacAddressBook, true);
 #else
   autofill_client_.GetPrefs()->SetBoolean(
       ::autofill::prefs::kAutofillAuxiliaryProfilesEnabled, true);
 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
@@ skipping 1645 matching lines @@
 
   external_delegate_->CheckSuggestions(
       kDefaultPageID,
       Suggestion(
           "Visa \xE2\x8B\xAF"
           "3456",
           "04/12", kVisaCard, autofill_manager_->GetPackedCreditCardID(4)));
 }
 
 }  // namespace autofill