chromium/base/memory/discardable_memory_backing_field_trial_unittest.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/memory/discardable_memory.h"
#include "base/memory/discardable_memory_internal.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/field_trial_params.h"
#include "base/test/scoped_feature_list.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"

#if BUILDFLAG(IS_POSIX)
#include "base/memory/madv_free_discardable_memory_posix.h"
#endif  // BUILDFLAG(IS_POSIX)

#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
namespace base {

class DiscardableMemoryBackingFieldTrialTest : public ::testing::Test { … };

TEST_F(DiscardableMemoryBackingFieldTrialTest, TrialActiveOnlyIfCapable) { … }

TEST_F(DiscardableMemoryBackingFieldTrialTest,
       EmulatedSharedMemoryBackingMatchesTrialGroup) { … }

TEST_F(DiscardableMemoryBackingFieldTrialTest,
       MadvFreeBackingMatchesTrialGroup) { … }

#if BUILDFLAG(IS_ANDROID)
TEST_F(DiscardableMemoryBackingFieldTrialTest, AshmemBackingMatchesTrialGroup) {
  std::unique_ptr<test::ScopedFeatureList> scoped_feature =
      GetScopedFeatureListForDiscardableMemoryTrialGroup(
          DiscardableMemoryTrialGroup::kAshmem);
  if (!DiscardableMemoryBackingFieldTrialIsEnabled())
    return;
  DiscardableMemoryBacking backing = GetDiscardableMemoryBacking();
  EXPECT_EQ(backing, DiscardableMemoryBacking::kSharedMemory);
}
#endif  // BUILDFLAG(IS_ANDROID)

}  // namespace base

#endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) ||
        // BUILDFLAG(IS_CHROMEOS)