chromium/gpu/command_buffer/client/transfer_buffer_cmd_copy_helpers_unittest.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "gpu/command_buffer/client/transfer_buffer_cmd_copy_helpers.h"

#include "testing/gtest/include/gtest/gtest.h"

namespace gpu {

namespace {

// Define a fake scoped transfer buffer to test helpers
class FakeScopedTransferBufferPtr { … };

constexpr uint32_t MaxCopyCount(uint32_t buffer_size) { … }

}  // namespace

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

// Check packed size computation
TEST_F(TransferBufferCmdCopyHelpersTest, CheckedSizeOfTypes) { … }

// Check copy size computations which do not require padding elements
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeCombinedCopySizeAligned) { … }

// Check copy size computations where elements do require padding
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeCombinedCopySizeUnaligned) { … }

// Check that overflow in copy size computation returns UINT32_MAX
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeCombinedCopySizeOverflow) { … }

// Check that the computed copy count is correct when padding is not required
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeMaxCopyCountAligned) { … }

// Check that the computed copy count is correct when padding is required
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeMaxCopyCountUnaligned) { … }

// Check that computing copy count for a buffer of size 0 is 0;
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeMaxCopyCountZero) { … }

// Check that copy count for elements whose packed size fits in the buffer
// but computed aligned size does not is 0
TEST_F(TransferBufferCmdCopyHelpersTest, ComputeMaxCopyCountOverflow) { … }

// Check that copied results are as expected and correctly aligned
TEST_F(TransferBufferCmdCopyHelpersTest, TransferArraysAndExecute) { … }

// Check copies that overflow and require multiple transfer buffers
TEST_F(TransferBufferCmdCopyHelpersTest, TransferArraysAndExecuteOverflow) { … }

}  // namespace gpu