[Autofill/Autocomplete Feature] Substring matching instead of prefix matching.

components/password_manager/core/browser/password_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 "components/password_manager/core/browser/password_autofill_manager.h"
 
+#include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/popup_item_ids.h"
 #include "components/autofill/core/browser/suggestion_test_helpers.h"
 #include "components/autofill/core/browser/test_autofill_client.h"
 #include "components/autofill/core/browser/test_autofill_driver.h"
 #include "components/autofill/core/common/autofill_constants.h"
+#include "components/autofill/core/common/autofill_switches.h"
 #include "components/autofill/core/common/form_field_data.h"
 #include "components/autofill/core/common/password_form_fill_data.h"
 #include "components/password_manager/core/browser/stub_password_manager_client.h"
 #include "components/password_manager/core/browser/stub_password_manager_driver.h"
 #include "components/strings/grit/components_strings.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/geometry/rect_f.h"
 
@@ skipping 322 matching lines @@
                   element_bounds, _,
                   SuggestionVectorValuesAre(testing::UnorderedElementsAre(
                       title,
                       test_username_)),
                   _));
   password_autofill_manager_->OnShowPasswordSuggestions(
       dummy_key, base::i18n::RIGHT_TO_LEFT, test_username_,
       autofill::IS_PASSWORD_FIELD, element_bounds);
 }
 
+// Test that when |kEnableSuggestionsWithSubStringMatch| command line switch is
+// on we return only sub-string matching username suggestions when the selected

[vabr (Chromium), 2015/03/23 14:17:33]

Just writing "only" makes it not clear which cases should not be matched. I
propose splitting this test into at least two parts, one for cases which should
be matched, and other for cases which should not.

[Pritam Nikam, 2015/03/24 11:39:37]

Done.

+// form field has been partially filled out.
+TEST_F(PasswordAutofillManagerTest, ExtractSuggestionsWithSubStringMatch) {
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      autofill::switches::kEnableSuggestionsWithSubStringMatch);
+
+  scoped_ptr<TestPasswordManagerClient> client(new TestPasswordManagerClient);
+  scoped_ptr<MockAutofillClient> autofill_client(new MockAutofillClient);
+  InitializePasswordAutofillManager(client.get(), autofill_client.get());
+
+  gfx::RectF element_bounds;
+  autofill::PasswordFormFillData data;
+  base::string16 username = base::ASCIIToUTF16("foo.bar@example.com");
+  data.username_field.value = username;
+  data.password_field.value = base::ASCIIToUTF16("foobar");
+  data.preferred_realm = "http://foo.com/";
+
+  autofill::PasswordAndRealm additional;
+  additional.realm = "https://foobarrealm.org";
+  base::string16 additional_username(base::ASCIIToUTF16("bar.foo@example.com"));
+  data.additional_logins[additional_username] = additional;
+
+  autofill::UsernamesCollectionKey usernames_key;
+  usernames_key.realm = "http://yetanother.net";
+  std::vector<base::string16> other_names;
+  base::string16 other_username1(base::ASCIIToUTF16("example@foo.com"));
+  other_names.push_back(other_username1);
+  base::string16 other_username2(base::ASCIIToUTF16("example@bar.com"));
+  other_names.push_back(other_username2);
+  data.other_possible_usernames[usernames_key] = other_names;
+
+  int dummy_key = 0;
+  password_autofill_manager_->OnAddPasswordFormMapping(dummy_key, data);
+
+  // Simulate displaying suggestions with sub-string matching "foo".
+  EXPECT_CALL(
+      *autofill_client,
+      ShowAutofillPopup(element_bounds, _,
+                        SuggestionVectorValuesAre(testing::UnorderedElementsAre(
+                            username, additional_username, other_username1)),
+                        _));
+  password_autofill_manager_->OnShowPasswordSuggestions(
+      dummy_key, base::i18n::RIGHT_TO_LEFT, base::ASCIIToUTF16("foo"), false,
+      element_bounds);
+}
+
 }  // namespace password_manager