Introduce incognito preference settings.

chrome/browser/prefs/overlay_persistent_pref_store_unittest.cc

+// Copyright (c) 2011 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 "base/values.h"
+#include "chrome/browser/prefs/overlay_persistent_pref_store.h"
+#include "chrome/browser/prefs/testing_pref_store.h"
+#include "chrome/common/pref_store_observer_mock.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::Mock;
+using ::testing::StrEq;
+
+const char key[] = "test.key";
+
+class OverlayPersistentPrefStoreTest : public testing::Test {
+ public:
+  OverlayPersistentPrefStoreTest()
+      : underlay_(new TestingPrefStore()),
+        overlay_(new OverlayPersistentPrefStore(underlay_.get())) {
+  }
+
+  scoped_refptr<TestingPrefStore> underlay_;
+  scoped_refptr<OverlayPersistentPrefStore> overlay_;
+};
+
+TEST_F(OverlayPersistentPrefStoreTest, Observer) {
+  PrefStoreObserverMock obs;
+  overlay_->AddObserver(&obs);
+
+  // Check that underlay first value is reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(1);
+  underlay_->SetValue(key, Value::CreateIntegerValue(42));
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check that underlay overwriting is reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(1);
+  underlay_->SetValue(key, Value::CreateIntegerValue(43));
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check that overwriting change in overlay is reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(1);
+  overlay_->SetValue(key, Value::CreateIntegerValue(44));
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check that hidden underlay change is not reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(0);
+  underlay_->SetValue(key, Value::CreateIntegerValue(45));
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check that overlay remove is reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(1);
+  overlay_->RemoveValue(key);
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check that underlay remove is reported.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(1);
+  underlay_->RemoveValue(key);
+  Mock::VerifyAndClearExpectations(&obs);
+
+  // Check respecting of silence.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(0);
+  overlay_->SetValueSilently(key, Value::CreateIntegerValue(46));
+  Mock::VerifyAndClearExpectations(&obs);
+
+  overlay_->RemoveObserver(&obs);
+
+  // Check successful unsubscription.
+  EXPECT_CALL(obs, OnPrefValueChanged(StrEq(key))).Times(0);
+  underlay_->SetValue(key, Value::CreateIntegerValue(47));
+  overlay_->SetValue(key, Value::CreateIntegerValue(48));
+  Mock::VerifyAndClearExpectations(&obs);
+}
+
+TEST_F(OverlayPersistentPrefStoreTest, GetAndSet) {
+  Value* value = NULL;
+  int i = -1;
+  EXPECT_EQ(PrefStore::READ_NO_VALUE, overlay_->GetValue(key, &value));
+  EXPECT_EQ(PrefStore::READ_NO_VALUE, underlay_->GetValue(key, &value));
+
+  underlay_->SetValue(key, Value::CreateIntegerValue(42));
+
+  // Value shines through:
+  EXPECT_EQ(PrefStore::READ_OK, overlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(42, i);
+
+  EXPECT_EQ(PrefStore::READ_OK, underlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(42, i);
+
+  overlay_->SetValue(key, Value::CreateIntegerValue(43));
+
+  EXPECT_EQ(PrefStore::READ_OK, overlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(43, i);
+
+  EXPECT_EQ(PrefStore::READ_OK, underlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(42, i);
+
+  overlay_->RemoveValue(key);
+
+  // Value shines through:
+  EXPECT_EQ(PrefStore::READ_OK, overlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(42, i);
+
+  EXPECT_EQ(PrefStore::READ_OK, underlay_->GetValue(key, &value));
+  ASSERT_TRUE(value);
+  EXPECT_TRUE(value->GetAsInteger(&i));
+  EXPECT_EQ(42, i);
+}