base/prefs/overlay_user_pref_store_unittest.cc

   1 // Copyright (c) 2012 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 #include "base/prefs/overlay_user_pref_store.h"
   6
   7 #include "base/prefs/pref_store_observer_mock.h"
   8 #include "base/prefs/testing_pref_store.h"
   9 #include "base/values.h"
  10 #include "testing/gmock/include/gmock/gmock.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 using ::testing::Mock;
  14 using ::testing::StrEq;
  15
  16 namespace base {
  17 namespace {
  18
  19 const char kBrowserWindowPlacement[] = "browser.window_placement";
  20 const char kShowBookmarkBar[] = "bookmark_bar.show_on_all_tabs";
  21
  22 const char* const overlay_key = kBrowserWindowPlacement;
  23 const char* const regular_key = kShowBookmarkBar;
  24 // With the removal of the kWebKitGlobalXXX prefs, we'll no longer have real
  25 // prefs using the overlay pref store, so make up keys here.
  26 const char mapped_overlay_key[] = "test.per_tab.javascript_enabled";
  27 const char mapped_underlay_key[] = "test.per_profile.javascript_enabled";
  28
  29 }  // namespace
  30
  31 class OverlayUserPrefStoreTest : public testing::Test {
  32  protected:
  33   OverlayUserPrefStoreTest()
  34       : underlay_(new TestingPrefStore()),
  35         overlay_(new OverlayUserPrefStore(underlay_.get())) {
  36     overlay_->RegisterOverlayPref(overlay_key);
  37     overlay_->RegisterOverlayPref(mapped_overlay_key, mapped_underlay_key);
  38   }
  39
  40   virtual ~OverlayUserPrefStoreTest() {}
  41
  42   scoped_refptr<TestingPrefStore> underlay_;
  43   scoped_refptr<OverlayUserPrefStore> overlay_;
  44 };
  45
  46 TEST_F(OverlayUserPrefStoreTest, Observer) {
  47   PrefStoreObserverMock obs;
  48   overlay_->AddObserver(&obs);
  49
  50   // Check that underlay first value is reported.
  51   underlay_->SetValue(overlay_key, new FundamentalValue(42));
  52   obs.VerifyAndResetChangedKey(overlay_key);
  53
  54   // Check that underlay overwriting is reported.
  55   underlay_->SetValue(overlay_key, new FundamentalValue(43));
  56   obs.VerifyAndResetChangedKey(overlay_key);
  57
  58   // Check that overwriting change in overlay is reported.
  59   overlay_->SetValue(overlay_key, new FundamentalValue(44));
  60   obs.VerifyAndResetChangedKey(overlay_key);
  61
  62   // Check that hidden underlay change is not reported.
  63   underlay_->SetValue(overlay_key, new FundamentalValue(45));
  64   EXPECT_TRUE(obs.changed_keys.empty());
  65
  66   // Check that overlay remove is reported.
  67   overlay_->RemoveValue(overlay_key);
  68   obs.VerifyAndResetChangedKey(overlay_key);
  69
  70   // Check that underlay remove is reported.
  71   underlay_->RemoveValue(overlay_key);
  72   obs.VerifyAndResetChangedKey(overlay_key);
  73
  74   // Check respecting of silence.
  75   overlay_->SetValueSilently(overlay_key, new FundamentalValue(46));
  76   EXPECT_TRUE(obs.changed_keys.empty());
  77
  78   overlay_->RemoveObserver(&obs);
  79
  80   // Check successful unsubscription.
  81   underlay_->SetValue(overlay_key, new FundamentalValue(47));
  82   overlay_->SetValue(overlay_key, new FundamentalValue(48));
  83   EXPECT_TRUE(obs.changed_keys.empty());
  84 }
  85
  86 TEST_F(OverlayUserPrefStoreTest, GetAndSet) {
  87   const Value* value = NULL;
  88   EXPECT_FALSE(overlay_->GetValue(overlay_key, &value));
  89   EXPECT_FALSE(underlay_->GetValue(overlay_key, &value));
  90
  91   underlay_->SetValue(overlay_key, new FundamentalValue(42));
  92
  93   // Value shines through:
  94   EXPECT_TRUE(overlay_->GetValue(overlay_key, &value));
  95   EXPECT_TRUE(base::FundamentalValue(42).Equals(value));
  96
  97   EXPECT_TRUE(underlay_->GetValue(overlay_key, &value));
  98   EXPECT_TRUE(base::FundamentalValue(42).Equals(value));
  99
 100   overlay_->SetValue(overlay_key, new FundamentalValue(43));
 101
 102   EXPECT_TRUE(overlay_->GetValue(overlay_key, &value));
 103   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 104
 105   EXPECT_TRUE(underlay_->GetValue(overlay_key, &value));
 106   EXPECT_TRUE(base::FundamentalValue(42).Equals(value));
 107
 108   overlay_->RemoveValue(overlay_key);
 109
 110   // Value shines through:
 111   EXPECT_TRUE(overlay_->GetValue(overlay_key, &value));
 112   EXPECT_TRUE(base::FundamentalValue(42).Equals(value));
 113
 114   EXPECT_TRUE(underlay_->GetValue(overlay_key, &value));
 115   EXPECT_TRUE(base::FundamentalValue(42).Equals(value));
 116 }
 117
 118 // Check that GetMutableValue does not return the dictionary of the underlay.
 119 TEST_F(OverlayUserPrefStoreTest, ModifyDictionaries) {
 120   underlay_->SetValue(overlay_key, new DictionaryValue);
 121
 122   Value* modify = NULL;
 123   EXPECT_TRUE(overlay_->GetMutableValue(overlay_key, &modify));
 124   ASSERT_TRUE(modify);
 125   ASSERT_TRUE(modify->IsType(Value::TYPE_DICTIONARY));
 126   static_cast<DictionaryValue*>(modify)->SetInteger(overlay_key, 42);
 127
 128   Value* original_in_underlay = NULL;
 129   EXPECT_TRUE(underlay_->GetMutableValue(overlay_key, &original_in_underlay));
 130   ASSERT_TRUE(original_in_underlay);
 131   ASSERT_TRUE(original_in_underlay->IsType(Value::TYPE_DICTIONARY));
 132   EXPECT_TRUE(static_cast<DictionaryValue*>(original_in_underlay)->empty());
 133
 134   Value* modified = NULL;
 135   EXPECT_TRUE(overlay_->GetMutableValue(overlay_key, &modified));
 136   ASSERT_TRUE(modified);
 137   ASSERT_TRUE(modified->IsType(Value::TYPE_DICTIONARY));
 138   EXPECT_TRUE(Value::Equals(modify, static_cast<DictionaryValue*>(modified)));
 139 }
 140
 141 // Here we consider a global preference that is not overlayed.
 142 TEST_F(OverlayUserPrefStoreTest, GlobalPref) {
 143   PrefStoreObserverMock obs;
 144   overlay_->AddObserver(&obs);
 145
 146   const Value* value = NULL;
 147
 148   // Check that underlay first value is reported.
 149   underlay_->SetValue(regular_key, new FundamentalValue(42));
 150   obs.VerifyAndResetChangedKey(regular_key);
 151
 152   // Check that underlay overwriting is reported.
 153   underlay_->SetValue(regular_key, new FundamentalValue(43));
 154   obs.VerifyAndResetChangedKey(regular_key);
 155
 156   // Check that we get this value from the overlay
 157   EXPECT_TRUE(overlay_->GetValue(regular_key, &value));
 158   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 159
 160   // Check that overwriting change in overlay is reported.
 161   overlay_->SetValue(regular_key, new FundamentalValue(44));
 162   obs.VerifyAndResetChangedKey(regular_key);
 163
 164   // Check that we get this value from the overlay and the underlay.
 165   EXPECT_TRUE(overlay_->GetValue(regular_key, &value));
 166   EXPECT_TRUE(base::FundamentalValue(44).Equals(value));
 167   EXPECT_TRUE(underlay_->GetValue(regular_key, &value));
 168   EXPECT_TRUE(base::FundamentalValue(44).Equals(value));
 169
 170   // Check that overlay remove is reported.
 171   overlay_->RemoveValue(regular_key);
 172   obs.VerifyAndResetChangedKey(regular_key);
 173
 174   // Check that value was removed from overlay and underlay
 175   EXPECT_FALSE(overlay_->GetValue(regular_key, &value));
 176   EXPECT_FALSE(underlay_->GetValue(regular_key, &value));
 177
 178   // Check respecting of silence.
 179   overlay_->SetValueSilently(regular_key, new FundamentalValue(46));
 180   EXPECT_TRUE(obs.changed_keys.empty());
 181
 182   overlay_->RemoveObserver(&obs);
 183
 184   // Check successful unsubscription.
 185   underlay_->SetValue(regular_key, new FundamentalValue(47));
 186   overlay_->SetValue(regular_key, new FundamentalValue(48));
 187   EXPECT_TRUE(obs.changed_keys.empty());
 188 }
 189
 190 // Check that names mapping works correctly.
 191 TEST_F(OverlayUserPrefStoreTest, NamesMapping) {
 192   PrefStoreObserverMock obs;
 193   overlay_->AddObserver(&obs);
 194
 195   const Value* value = NULL;
 196
 197   // Check that if there is no override in the overlay, changing underlay value
 198   // is reported as changing an overlay value.
 199   underlay_->SetValue(mapped_underlay_key, new FundamentalValue(42));
 200   obs.VerifyAndResetChangedKey(mapped_overlay_key);
 201
 202   // Check that underlay overwriting is reported.
 203   underlay_->SetValue(mapped_underlay_key, new FundamentalValue(43));
 204   obs.VerifyAndResetChangedKey(mapped_overlay_key);
 205
 206   // Check that we get this value from the overlay with both keys
 207   EXPECT_TRUE(overlay_->GetValue(mapped_overlay_key, &value));
 208   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 209   // In this case, overlay reads directly from the underlay.
 210   EXPECT_TRUE(overlay_->GetValue(mapped_underlay_key, &value));
 211   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 212
 213   // Check that overwriting change in overlay is reported.
 214   overlay_->SetValue(mapped_overlay_key, new FundamentalValue(44));
 215   obs.VerifyAndResetChangedKey(mapped_overlay_key);
 216
 217   // Check that we get an overriden value from overlay, while reading the
 218   // value from underlay still holds an old value.
 219   EXPECT_TRUE(overlay_->GetValue(mapped_overlay_key, &value));
 220   EXPECT_TRUE(base::FundamentalValue(44).Equals(value));
 221   EXPECT_TRUE(overlay_->GetValue(mapped_underlay_key, &value));
 222   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 223   EXPECT_TRUE(underlay_->GetValue(mapped_underlay_key, &value));
 224   EXPECT_TRUE(base::FundamentalValue(43).Equals(value));
 225
 226   // Check that hidden underlay change is not reported.
 227   underlay_->SetValue(mapped_underlay_key, new FundamentalValue(45));
 228   EXPECT_TRUE(obs.changed_keys.empty());
 229
 230   // Check that overlay remove is reported.
 231   overlay_->RemoveValue(mapped_overlay_key);
 232   obs.VerifyAndResetChangedKey(mapped_overlay_key);
 233
 234   // Check that underlay remove is reported.
 235   underlay_->RemoveValue(mapped_underlay_key);
 236   obs.VerifyAndResetChangedKey(mapped_overlay_key);
 237
 238   // Check that value was removed.
 239   EXPECT_FALSE(overlay_->GetValue(mapped_overlay_key, &value));
 240   EXPECT_FALSE(overlay_->GetValue(mapped_underlay_key, &value));
 241
 242   // Check respecting of silence.
 243   overlay_->SetValueSilently(mapped_overlay_key, new FundamentalValue(46));
 244   EXPECT_TRUE(obs.changed_keys.empty());
 245
 246   overlay_->RemoveObserver(&obs);
 247
 248   // Check successful unsubscription.
 249   underlay_->SetValue(mapped_underlay_key, new FundamentalValue(47));
 250   overlay_->SetValue(mapped_overlay_key, new FundamentalValue(48));
 251   EXPECT_TRUE(obs.changed_keys.empty());
 252 }
 253
 254 }  // namespace base