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// 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/shared_memory_hooks.h"
#include <optional>
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
class SharedMemoryHooksTest : public ::testing::Test {
protected:
void TearDown() override { SetCreateHooks(nullptr, nullptr, nullptr); }
void SetCreateHooks(
ReadOnlySharedMemoryRegion::CreateFunction* read_only_hook,
UnsafeSharedMemoryRegion::CreateFunction* unsafe_hook,
WritableSharedMemoryRegion::CreateFunction* writable_hook) {
SharedMemoryHooks::SetCreateHooks(read_only_hook, unsafe_hook,
writable_hook);
}
};
std::optional<size_t> requested_read_only_shmem_size;
std::optional<size_t> requested_unsafe_shmem_size;
std::optional<size_t> requested_writable_shmem_size;
MappedReadOnlyRegion ReadOnlyShmemCreateHook(size_t size,
SharedMemoryMapper* mapper) {
requested_read_only_shmem_size = size;
return {};
}
UnsafeSharedMemoryRegion UnsafeShmemCreateHook(size_t size) {
requested_unsafe_shmem_size = size;
return {};
}
WritableSharedMemoryRegion WritableShmemCreateHook(size_t size) {
requested_writable_shmem_size = size;
return {};
}
TEST_F(SharedMemoryHooksTest, Basic) {
{
auto region = ReadOnlySharedMemoryRegion::Create(3);
EXPECT_TRUE(region.IsValid());
EXPECT_FALSE(requested_read_only_shmem_size.has_value());
}
{
auto region = UnsafeSharedMemoryRegion::Create(25);
EXPECT_TRUE(region.IsValid());
EXPECT_FALSE(requested_unsafe_shmem_size.has_value());
}
{
auto region = WritableSharedMemoryRegion::Create(777);
EXPECT_TRUE(region.IsValid());
EXPECT_FALSE(requested_writable_shmem_size.has_value());
}
SetCreateHooks(&ReadOnlyShmemCreateHook, &UnsafeShmemCreateHook,
&WritableShmemCreateHook);
{
auto region = ReadOnlySharedMemoryRegion::Create(3);
EXPECT_FALSE(region.IsValid());
EXPECT_EQ(3u, *requested_read_only_shmem_size);
}
{
auto region = UnsafeSharedMemoryRegion::Create(25);
EXPECT_FALSE(region.IsValid());
EXPECT_EQ(25u, *requested_unsafe_shmem_size);
}
{
auto region = WritableSharedMemoryRegion::Create(777);
EXPECT_FALSE(region.IsValid());
EXPECT_EQ(777u, *requested_writable_shmem_size);
}
}
} // namespace base
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