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// Copyright 2018 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 "third_party/blink/renderer/platform/heap/address_cache.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/platform/heap/heap_page.h"
namespace blink {
namespace {
const Address kObjectAddress = reinterpret_cast<Address>(kBlinkPageSize);
} // namespace
TEST(AddressCacheTest, Scope) {
AddressCache cache;
AddressCache::EnabledScope scope(&cache);
EXPECT_FALSE(cache.Lookup(kObjectAddress));
}
TEST(AddressCacheTest, InitialIsEmpty) {
AddressCache cache;
cache.EnableLookup();
EXPECT_TRUE(cache.IsEmpty());
}
TEST(AddressCacheTest, LookupOnEmpty) {
AddressCache cache;
cache.EnableLookup();
EXPECT_FALSE(cache.Lookup(kObjectAddress));
}
TEST(AddressCacheTest, LookupAfterAddEntry) {
AddressCache cache;
cache.EnableLookup();
cache.AddEntry(kObjectAddress);
EXPECT_TRUE(cache.Lookup(kObjectAddress));
}
TEST(AddressCacheTest, AddEntryAddsWholePage) {
AddressCache cache;
cache.EnableLookup();
cache.AddEntry(kObjectAddress);
for (Address current = kObjectAddress;
current < (kObjectAddress + kBlinkPageSize); current++) {
EXPECT_TRUE(cache.Lookup(current));
}
}
TEST(AddressCacheTest, AddEntryOnlyAddsPageForGivenAddress) {
AddressCache cache;
cache.EnableLookup();
cache.AddEntry(kObjectAddress);
EXPECT_FALSE(cache.Lookup(kObjectAddress - 1));
EXPECT_FALSE(cache.Lookup(kObjectAddress + kBlinkPageSize + 1));
}
TEST(AddressCacheTest, FlushIfDirtyIgnoresNonDirty) {
AddressCache cache;
cache.EnableLookup();
cache.AddEntry(kObjectAddress);
cache.FlushIfDirty();
// Cannot do lookup in dirty cache.
EXPECT_FALSE(cache.IsEmpty());
}
TEST(AddressCacheTest, FlushIfDirtyHandlesDirty) {
AddressCache cache;
cache.EnableLookup();
cache.AddEntry(kObjectAddress);
cache.MarkDirty();
cache.FlushIfDirty();
// Cannot do lookup in dirty cache.
EXPECT_TRUE(cache.IsEmpty());
}
} // namespace blink
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