| // Copyright 2017 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 "chrome/browser/font_pref_change_notifier.h" |
| #include "base/bind.h" |
| #include "chrome/common/pref_names_util.h" |
| #include "components/prefs/pref_registry_simple.h" |
| #include "components/prefs/testing_pref_service.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace { |
| |
| void AppendString(std::vector<std::string>* vect, const std::string& str) { |
| vect->push_back(str); |
| } |
| |
| } // namespace |
| |
| TEST(FontPrefChangeNotifier, Registrars) { |
| std::string prefix((pref_names_util::kWebKitFontPrefPrefix)); |
| |
| // Registrar 0 will outlive the notifier. |
| std::vector<std::string> fonts0; |
| FontPrefChangeNotifier::Registrar reg0; |
| |
| std::unique_ptr<TestingPrefServiceSimple> service = |
| std::make_unique<TestingPrefServiceSimple>(); |
| PrefRegistrySimple* pref_registry = service->registry(); |
| |
| std::string font1 = prefix + "font1"; |
| pref_registry->RegisterStringPref(font1, std::string()); |
| std::string font2 = prefix + "font2"; |
| pref_registry->RegisterStringPref(font2, std::string()); |
| std::string font3 = prefix + "font3"; |
| pref_registry->RegisterStringPref(font3, std::string()); |
| |
| std::unique_ptr<FontPrefChangeNotifier> notifier = |
| std::make_unique<FontPrefChangeNotifier>(service.get()); |
| reg0.Register(notifier.get(), |
| base::BindRepeating(&AppendString, base::Unretained(&fonts0))); |
| |
| // Registrar 1 will be manually unregistered. |
| std::vector<std::string> fonts1; |
| FontPrefChangeNotifier::Registrar reg1; |
| reg1.Register(notifier.get(), |
| base::BindRepeating(&AppendString, base::Unretained(&fonts1))); |
| |
| // Registrar 2 will automatically unregister itself when it goes out of scope. |
| std::vector<std::string> fonts2; |
| { |
| FontPrefChangeNotifier::Registrar reg2; |
| reg2.Register( |
| notifier.get(), |
| base::BindRepeating(&AppendString, base::Unretained(&fonts2))); |
| |
| // All lists should get the font. |
| service->SetString(font1, "1"); |
| EXPECT_EQ(1u, fonts0.size()); |
| EXPECT_EQ(font1, fonts0.back()); |
| EXPECT_EQ(1u, fonts1.size()); |
| EXPECT_EQ(font1, fonts1.back()); |
| EXPECT_EQ(1u, fonts2.size()); |
| EXPECT_EQ(font1, fonts2.back()); |
| } |
| |
| // Now that Regsitrar 2 is gone, only 0 and 1 should get changes. |
| service->SetString(font2, "2"); |
| EXPECT_EQ(2u, fonts0.size()); |
| EXPECT_EQ(font2, fonts0.back()); |
| EXPECT_EQ(2u, fonts1.size()); |
| EXPECT_EQ(font2, fonts1.back()); |
| EXPECT_EQ(1u, fonts2.size()); |
| |
| // Manually unregister Registrar 1. |
| reg1.Unregister(); |
| EXPECT_FALSE(reg1.is_registered()); |
| |
| // Only Registrar 0 should see changes now. |
| service->SetString(font3, "3"); |
| EXPECT_EQ(3u, fonts0.size()); |
| EXPECT_EQ(font3, fonts0.back()); |
| EXPECT_EQ(2u, fonts1.size()); |
| EXPECT_EQ(1u, fonts2.size()); |
| EXPECT_EQ(font3, fonts0.back()); |
| |
| notifier.reset(); |
| |
| // Registrar 0 should have been automatically unregistered. |
| EXPECT_FALSE(reg0.is_registered()); |
| } |