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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/prefs/overlay_user_pref_store.h"
#include <memory>
#include "base/test/task_environment.h"
#include "base/values.h"
#include "components/prefs/persistent_pref_store_unittest.h"
#include "components/prefs/pref_store_observer_mock.h"
#include "components/prefs/testing_pref_store.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::Mock;
using ::testing::StrEq;
namespace base {
namespace {
const char kBrowserWindowPlacement[] = "browser.window_placement";
const char kShowBookmarkBar[] = "bookmark_bar.show_on_all_tabs";
const char kSharedKey[] = "sync_promo.show_on_first_run_allowed";
const char* const regular_key = kBrowserWindowPlacement;
const char* const persistent_key = kShowBookmarkBar;
const char* const shared_key = kSharedKey;
} // namespace
class OverlayUserPrefStoreTest : public testing::Test {
protected:
OverlayUserPrefStoreTest()
: underlay_(new TestingPrefStore()),
overlay_(new OverlayUserPrefStore(underlay_.get())) {
overlay_->RegisterPersistentPref(persistent_key);
overlay_->RegisterPersistentPref(shared_key);
}
~OverlayUserPrefStoreTest() override {}
base::test::TaskEnvironment task_environment_;
scoped_refptr<TestingPrefStore> underlay_;
scoped_refptr<OverlayUserPrefStore> overlay_;
};
TEST_F(OverlayUserPrefStoreTest, Observer) {
PrefStoreObserverMock obs;
overlay_->AddObserver(&obs);
// Check that underlay first value is reported.
underlay_->SetValue(regular_key, Value(42),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(regular_key);
// Check that underlay overwriting is reported.
underlay_->SetValue(regular_key, Value(43),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(regular_key);
// Check that overwriting change in overlay is reported.
overlay_->SetValue(regular_key, Value(44),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(regular_key);
// Check that hidden underlay change is not reported.
underlay_->SetValue(regular_key, Value(45),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(obs.changed_keys.empty());
// Check that overlay remove is reported.
overlay_->RemoveValue(regular_key,
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(regular_key);
// Check that underlay remove is reported.
underlay_->RemoveValue(regular_key,
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(regular_key);
// Check respecting of silence.
overlay_->SetValueSilently(regular_key, Value(46),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(obs.changed_keys.empty());
overlay_->RemoveObserver(&obs);
// Check successful unsubscription.
underlay_->SetValue(regular_key, Value(47),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
overlay_->SetValue(regular_key, Value(48),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(obs.changed_keys.empty());
}
TEST_F(OverlayUserPrefStoreTest, GetAndSet) {
const Value* value = nullptr;
EXPECT_FALSE(overlay_->GetValue(regular_key, &value));
EXPECT_FALSE(underlay_->GetValue(regular_key, &value));
underlay_->SetValue(regular_key, Value(42),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
// Value shines through:
EXPECT_TRUE(overlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(42), *value);
EXPECT_TRUE(underlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(42), *value);
overlay_->SetValue(regular_key, Value(43),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(overlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(43), *value);
EXPECT_TRUE(underlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(42), *value);
overlay_->RemoveValue(regular_key,
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
// Value shines through:
EXPECT_TRUE(overlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(42), *value);
EXPECT_TRUE(underlay_->GetValue(regular_key, &value));
EXPECT_EQ(base::Value(42), *value);
}
// Check that GetMutableValue does not return the dictionary of the underlay.
TEST_F(OverlayUserPrefStoreTest, ModifyDictionaries) {
underlay_->SetValue(regular_key, base::Value(base::Value::Dict()),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
Value* modify = nullptr;
EXPECT_TRUE(overlay_->GetMutableValue(regular_key, &modify));
ASSERT_TRUE(modify);
ASSERT_TRUE(modify->is_dict());
modify->GetDict().SetByDottedPath(regular_key, 42);
Value* original_in_underlay = nullptr;
EXPECT_TRUE(underlay_->GetMutableValue(regular_key, &original_in_underlay));
ASSERT_TRUE(original_in_underlay);
ASSERT_TRUE(original_in_underlay->is_dict());
EXPECT_TRUE(original_in_underlay->GetDict().empty());
Value* modified = nullptr;
EXPECT_TRUE(overlay_->GetMutableValue(regular_key, &modified));
ASSERT_TRUE(modified);
ASSERT_TRUE(modified->is_dict());
EXPECT_EQ(*modify, *modified);
}
// Here we consider a global preference that is not overlayed.
TEST_F(OverlayUserPrefStoreTest, GlobalPref) {
PrefStoreObserverMock obs;
overlay_->AddObserver(&obs);
const Value* value = nullptr;
// Check that underlay first value is reported.
underlay_->SetValue(persistent_key, Value(42),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(persistent_key);
// Check that underlay overwriting is reported.
underlay_->SetValue(persistent_key, Value(43),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(persistent_key);
// Check that we get this value from the overlay
EXPECT_TRUE(overlay_->GetValue(persistent_key, &value));
EXPECT_EQ(base::Value(43), *value);
// Check that overwriting change in overlay is reported.
overlay_->SetValue(persistent_key, Value(44),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(persistent_key);
// Check that we get this value from the overlay and the underlay.
EXPECT_TRUE(overlay_->GetValue(persistent_key, &value));
EXPECT_EQ(base::Value(44), *value);
EXPECT_TRUE(underlay_->GetValue(persistent_key, &value));
EXPECT_EQ(base::Value(44), *value);
// Check that overlay remove is reported.
overlay_->RemoveValue(persistent_key,
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
obs.VerifyAndResetChangedKey(persistent_key);
// Check that value was removed from overlay and underlay
EXPECT_FALSE(overlay_->GetValue(persistent_key, &value));
EXPECT_FALSE(underlay_->GetValue(persistent_key, &value));
// Check respecting of silence.
overlay_->SetValueSilently(persistent_key, Value(46),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(obs.changed_keys.empty());
overlay_->RemoveObserver(&obs);
// Check successful unsubscription.
underlay_->SetValue(persistent_key, Value(47),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
overlay_->SetValue(persistent_key, Value(48),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
EXPECT_TRUE(obs.changed_keys.empty());
}
TEST_F(OverlayUserPrefStoreTest, GetValues) {
// To check merge behavior, create underlay and overlay so each has a key the
// other doesn't have and they have one key in common.
underlay_->SetValue(persistent_key, Value(42),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
overlay_->SetValue(regular_key, Value(43),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
underlay_->SetValue(shared_key, Value(42),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
overlay_->SetValue(shared_key, Value(43),
WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
auto values = overlay_->GetValues();
// Check that an overlay preference is returned.
const Value* value = values.FindByDottedPath(persistent_key);
ASSERT_TRUE(value);
EXPECT_EQ(base::Value(42), *value);
// Check that an underlay preference is returned.
value = values.FindByDottedPath(regular_key);
ASSERT_TRUE(value);
EXPECT_EQ(base::Value(43), *value);
// Check that the overlay is preferred.
value = values.FindByDottedPath(shared_key);
ASSERT_TRUE(value);
EXPECT_EQ(base::Value(43), *value);
}
TEST_F(OverlayUserPrefStoreTest, CommitPendingWriteWithCallback) {
TestCommitPendingWriteWithCallback(overlay_.get(), &task_environment_);
}
} // namespace base
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