//===------- Offload API tests - olCreateProgram --------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "../common/Fixtures.hpp"
#include <OffloadAPI.h>
#include <gtest/gtest.h>

using olCreateProgramTest = OffloadDeviceTest;
OFFLOAD_TESTS_INSTANTIATE_DEVICE_FIXTURE(olCreateProgramTest);

TEST_P(olCreateProgramTest, Success) {

  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo", Device, DeviceBin));
  ASSERT_GE(DeviceBin->getBufferSize(), 0lu);

  ol_program_handle_t Program;
  ASSERT_SUCCESS(olCreateProgram(Device, DeviceBin->getBufferStart(),
                                 DeviceBin->getBufferSize(), &Program));
  ASSERT_NE(Program, nullptr);

  ASSERT_SUCCESS(olDestroyProgram(Program));
}

TEST_P(olCreateProgramTest, JITSuccess) {

  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo_jit", Device, DeviceBin));
  ASSERT_GE(DeviceBin->getBufferSize(), 0lu);

  ol_program_handle_t Program;
  ASSERT_SUCCESS(olCreateProgram(Device, DeviceBin->getBufferStart(),
                                 DeviceBin->getBufferSize(), &Program));
  ASSERT_NE(Program, nullptr);

  ol_symbol_handle_t Symbol;
  ASSERT_SUCCESS(olGetSymbol(Program, "foo", OL_SYMBOL_KIND_KERNEL, &Symbol));

  ASSERT_NE(Symbol, nullptr);

  ASSERT_SUCCESS(olDestroyProgram(Program));
}

TEST_P(olCreateProgramTest, NullDeviceHandle) {

  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo", Device, DeviceBin));
  ASSERT_GE(DeviceBin->getBufferSize(), 0lu);

  ol_program_handle_t Program;
  ASSERT_ERROR(OL_ERRC_INVALID_NULL_HANDLE,
               olCreateProgram(nullptr, DeviceBin->getBufferStart(),
                               DeviceBin->getBufferSize(), &Program));
}

TEST_P(olCreateProgramTest, NullProgData) {

  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo", Device, DeviceBin));
  ASSERT_GE(DeviceBin->getBufferSize(), 0lu);

  ol_program_handle_t Program;
  ASSERT_ERROR(
      OL_ERRC_INVALID_NULL_POINTER,
      olCreateProgram(Device, nullptr, DeviceBin->getBufferSize(), &Program));
}

TEST_P(olCreateProgramTest, NullOutputProgram) {

  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo", Device, DeviceBin));
  ASSERT_GE(DeviceBin->getBufferSize(), 0lu);

  ASSERT_ERROR(OL_ERRC_INVALID_NULL_POINTER,
               olCreateProgram(Device, DeviceBin->getBufferStart(),
                               DeviceBin->getBufferSize(), nullptr));
}

TEST_P(olCreateProgramTest, ZeroSizeBinary) {
  std::unique_ptr<llvm::MemoryBuffer> DeviceBin;
  ASSERT_TRUE(TestEnvironment::loadDeviceBinary("foo", Device, DeviceBin));
  ASSERT_GT(DeviceBin->getBufferSize(), 0lu);

  ol_program_handle_t Program = nullptr;

  ASSERT_ERROR(
      OL_ERRC_INVALID_BINARY,
      olCreateProgram(Device, DeviceBin->getBufferStart(), 0, &Program));
  ASSERT_EQ(Program, nullptr);
}

TEST_P(olCreateProgramTest, InvalidBinary) {
  const char InvalidBinary[] = "not an offload binary";

  ol_program_handle_t Program = nullptr;
  ASSERT_ERROR(OL_ERRC_INVALID_BINARY,
               olCreateProgram(Device, InvalidBinary, sizeof(InvalidBinary) - 1,
                               &Program));
  ASSERT_EQ(Program, nullptr);
}

TEST_P(olCreateProgramTest, WrongArchitecture) {
  // Pick a backend different from the device's own, so the loaded binary is
  // valid but built for the wrong architecture.
  ol_platform_backend_t Backend = getPlatformBackend();
  ol_platform_backend_t ForeignBackend = Backend == OL_PLATFORM_BACKEND_CUDA
                                             ? OL_PLATFORM_BACKEND_AMDGPU
                                             : OL_PLATFORM_BACKEND_CUDA;

  std::unique_ptr<llvm::MemoryBuffer> ForeignBin;
  if (!TestEnvironment::loadDeviceBinary("foo", Device, ForeignBin,
                                         ForeignBackend))
    GTEST_SKIP() << "No foreign-architecture binary available for this build.";
  ASSERT_GT(ForeignBin->getBufferSize(), 0lu);

  ol_program_handle_t Program = nullptr;
  ASSERT_ERROR(OL_ERRC_INVALID_BINARY,
               olCreateProgram(Device, ForeignBin->getBufferStart(),
                               ForeignBin->getBufferSize(), &Program));
  ASSERT_EQ(Program, nullptr);
}