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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 "gpu/command_buffer/service/transfer_buffer_manager.h"
#include <stddef.h>
#include <memory>
#include "gpu/command_buffer/service/memory_tracking.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace gpu {
const static size_t kBufferSize = 1024;
class TransferBufferManagerTest : public testing::Test {
protected:
void SetUp() override {
transfer_buffer_manager_ = std::make_unique<TransferBufferManager>(nullptr);
}
std::unique_ptr<TransferBufferManager> transfer_buffer_manager_;
};
TEST_F(TransferBufferManagerTest, ZeroHandleMapsToNull) {
EXPECT_TRUE(nullptr == transfer_buffer_manager_->GetTransferBuffer(0).get());
}
TEST_F(TransferBufferManagerTest, NegativeHandleMapsToNull) {
EXPECT_TRUE(nullptr == transfer_buffer_manager_->GetTransferBuffer(-1).get());
}
TEST_F(TransferBufferManagerTest, OutOfRangeHandleMapsToNull) {
EXPECT_TRUE(nullptr == transfer_buffer_manager_->GetTransferBuffer(1).get());
}
TEST_F(TransferBufferManagerTest, CanRegisterTransferBuffer) {
base::UnsafeSharedMemoryRegion shm_region =
base::UnsafeSharedMemoryRegion::Create(kBufferSize);
base::WritableSharedMemoryMapping shm_mapping = shm_region.Map();
auto shm_guid = shm_region.GetGUID();
auto backing = std::make_unique<SharedMemoryBufferBacking>(
std::move(shm_region), std::move(shm_mapping));
SharedMemoryBufferBacking* backing_raw_ptr = backing.get();
EXPECT_TRUE(transfer_buffer_manager_->RegisterTransferBuffer(
1, base::MakeRefCounted<Buffer>(std::move(backing))));
scoped_refptr<Buffer> registered =
transfer_buffer_manager_->GetTransferBuffer(1);
// Shared-memory ownership is transfered. It should be the same memory.
EXPECT_EQ(backing_raw_ptr, registered->backing());
EXPECT_EQ(shm_guid, backing_raw_ptr->GetGUID());
}
TEST_F(TransferBufferManagerTest, CanDestroyTransferBuffer) {
EXPECT_TRUE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
transfer_buffer_manager_->DestroyTransferBuffer(1);
scoped_refptr<Buffer> registered =
transfer_buffer_manager_->GetTransferBuffer(1);
scoped_refptr<Buffer> null_buffer;
EXPECT_EQ(null_buffer, registered);
}
TEST_F(TransferBufferManagerTest, CannotRegregisterTransferBufferId) {
EXPECT_TRUE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
EXPECT_FALSE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
EXPECT_FALSE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
}
TEST_F(TransferBufferManagerTest, CanReuseTransferBufferIdAfterDestroying) {
EXPECT_TRUE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
transfer_buffer_manager_->DestroyTransferBuffer(1);
EXPECT_TRUE(transfer_buffer_manager_->RegisterTransferBuffer(
1, MakeMemoryBuffer(42)));
}
TEST_F(TransferBufferManagerTest, DestroyUnusedTransferBufferIdDoesNotCrash) {
transfer_buffer_manager_->DestroyTransferBuffer(1);
}
TEST_F(TransferBufferManagerTest, CannotRegisterNullTransferBuffer) {
EXPECT_FALSE(transfer_buffer_manager_->RegisterTransferBuffer(
0, MakeMemoryBuffer(42)));
}
TEST_F(TransferBufferManagerTest, CannotRegisterNegativeTransferBufferId) {
EXPECT_FALSE(transfer_buffer_manager_->RegisterTransferBuffer(
-1, MakeMemoryBuffer(42)));
}
} // namespace gpu
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