// 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.

#include <array>

// This file contains unit tests for webgpu commands

#include <stddef.h>
#include <stdint.h>

#include <limits>

#include "base/functional/bind.h"
#include "base/location.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread.h"
#include "gpu/command_buffer/common/webgpu_cmd_format.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace gpu {
namespace webgpu {

class WebGPUFormatTest : public testing::Test {
 protected:
  static const unsigned char kInitialValue = 0xBD;

  void SetUp() override {
    UNSAFE_TODO(
        memset(buffer_.data(), kInitialValue,
               (buffer_.size() * sizeof(decltype(buffer_)::value_type))));
  }

  void TearDown() override {}

  template <typename T>
  T* GetBufferAs() {
    return static_cast<T*>(static_cast<void*>(&buffer_));
  }

  void CheckBytesWritten(const void* end,
                         size_t expected_size,
                         size_t written_size) {
    size_t actual_size = static_cast<const unsigned char*>(end) -
                         GetBufferAs<const unsigned char>();
    EXPECT_LT(actual_size,
              (buffer_.size() * sizeof(decltype(buffer_)::value_type)));
    EXPECT_GT(actual_size, 0u);
    EXPECT_EQ(expected_size, actual_size);
    EXPECT_EQ(kInitialValue, buffer_[written_size]);
    EXPECT_NE(kInitialValue, buffer_[written_size - 1]);
  }

  void CheckBytesWrittenMatchesExpectedSize(const void* end,
                                            size_t expected_size) {
    CheckBytesWritten(end, expected_size, expected_size);
  }

 private:
  std::array<unsigned char, 1024> buffer_;
};

const unsigned char WebGPUFormatTest::kInitialValue;

#include "gpu/command_buffer/common/webgpu_cmd_format_test_autogen.h"

}  // namespace webgpu
}  // namespace gpu