base/prefs/mock_pref_change_callback.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_PREFS_MOCK_PREF_CHANGE_CALLBACK_H_
   6 #define BASE_PREFS_MOCK_PREF_CHANGE_CALLBACK_H_
   7
   8 #include <string>
   9
  10 #include "base/prefs/pref_change_registrar.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "testing/gmock/include/gmock/gmock.h"
  13
  14 using testing::Pointee;
  15 using testing::Property;
  16 using testing::Truly;
  17
  18 // Matcher that checks whether the current value of the preference named
  19 // |pref_name| in |prefs| matches |value|. If |value| is NULL, the matcher
  20 // checks that the value is not set.
  21 MATCHER_P3(PrefValueMatches, prefs, pref_name, value, "") {
  22   const PrefService::Preference* pref = prefs->FindPreference(pref_name);
  23   if (!pref)
  24     return false;
  25
  26   const base::Value* actual_value = pref->GetValue();
  27   if (!actual_value)
  28     return value == NULL;
  29   if (!value)
  30     return actual_value == NULL;
  31   return value->Equals(actual_value);
  32 }
  33
  34 // A mock for testing preference notifications and easy setup of expectations.
  35 class MockPrefChangeCallback {
  36  public:
  37   explicit MockPrefChangeCallback(PrefService* prefs);
  38   virtual ~MockPrefChangeCallback();
  39
  40   PrefChangeRegistrar::NamedChangeCallback GetCallback();
  41
  42   MOCK_METHOD1(OnPreferenceChanged, void(const std::string&));
  43
  44   void Expect(const std::string& pref_name,
  45               const base::Value* value);
  46
  47  private:
  48   PrefService* prefs_;
  49 };
  50
  51 #endif  // BASE_PREFS_MOCK_PREF_CHANGE_CALLBACK_H_