/*
 * Copyright (C) 2017-2019 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "core/unit_tests/helpers/debug_manager_state_restore.h"
#include "runtime/platform/platform.h"
#include "unit_tests/helpers/variable_backup.h"

#include "cl_api_tests.h"

using namespace NEO;

namespace NEO {
extern bool overrideDeviceWithDefaultHardwareInfo;
extern bool overrideCommandStreamReceiverCreation;

} // namespace NEO

using clGetDeviceIDsTests = api_tests;

namespace ULT {

TEST_F(clGetDeviceIDsTests, GivenZeroNumEntriesWhenGettingDeviceIdsThenNumberOfDevicesIsGreaterThanZero) {
    cl_uint numDevices = 0;

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_GPU, 0, nullptr, &numDevices);

    EXPECT_EQ(CL_SUCCESS, retVal);
    EXPECT_GT(numDevices, (cl_uint)0);
}

TEST_F(clGetDeviceIDsTests, GivenNonNullDevicesWhenGettingDeviceIdsThenDeviceIdIsReturned) {
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_GPU, numEntries, pDevices, nullptr);
    EXPECT_EQ(CL_SUCCESS, retVal);
}

TEST_F(clGetDeviceIDsTests, GivenNullPlatformWhenGettingDeviceIdsThenDeviceIdIsReturned) {
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(nullptr, CL_DEVICE_TYPE_GPU, numEntries, pDevices, nullptr);
    EXPECT_EQ(CL_SUCCESS, retVal);
}

TEST_F(clGetDeviceIDsTests, GivenInvalidDeviceTypeWhenGettingDeviceIdsThenInvalidDeivceTypeErrorIsReturned) {
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(pPlatform, 0x0f00, numEntries, pDevices, nullptr);
    EXPECT_EQ(CL_INVALID_DEVICE_TYPE, retVal);
}

TEST_F(clGetDeviceIDsTests, GivenZeroNumEntriesAndNonNullDevicesWhenGettingDeviceIdsThenInvalidValueErrorIsReturned) {
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_GPU, 0, pDevices, nullptr);
    EXPECT_EQ(CL_INVALID_VALUE, retVal);
}

TEST_F(clGetDeviceIDsTests, GivenInvalidPlatformWhenGettingDeviceIdsThenInvalidPlatformErrorIsReturned) {
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];
    uint32_t trash[6] = {0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef};
    cl_platform_id p = reinterpret_cast<cl_platform_id>(trash);

    retVal = clGetDeviceIDs(p, CL_DEVICE_TYPE_GPU, numEntries, pDevices, nullptr);
    EXPECT_EQ(CL_INVALID_PLATFORM, retVal);
}

TEST_F(clGetDeviceIDsTests, GivenDeviceTypeAllWhenGettingDeviceIdsThenDeviceIdIsReturned) {
    cl_uint numDevices = 0;
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_ALL, numEntries, pDevices, &numDevices);
    EXPECT_EQ(CL_SUCCESS, retVal);
    EXPECT_GT(numDevices, (cl_uint)0);
}

TEST_F(clGetDeviceIDsTests, GivenDeviceTypeDefaultWhenGettingDeviceIdsThenDeviceIdIsReturned) {
    cl_uint numDevices = 0;
    cl_uint numEntries = 1;
    cl_device_id pDevices[1];

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_DEFAULT, numEntries, pDevices, &numDevices);
    EXPECT_EQ(CL_SUCCESS, retVal);
    EXPECT_GT(numDevices, (cl_uint)0);
}

TEST_F(clGetDeviceIDsTests, GivenDeviceTypeCpuWhenGettingDeviceIdsThenDeviceNotFoundErrorIsReturned) {
    cl_uint numDevices = 0;

    retVal = clGetDeviceIDs(pPlatform, CL_DEVICE_TYPE_CPU, 0, nullptr, &numDevices);

    EXPECT_EQ(CL_DEVICE_NOT_FOUND, retVal);
    EXPECT_EQ(numDevices, (cl_uint)0);
}

TEST(clGetDeviceIDsTest, givenMultipleRootDevicesWhenGetDeviceIdsThenAllRootDevicesAreReturned) {
    constexpr auto numRootDevices = 3u;
    VariableBackup<bool> backup(&overrideDeviceWithDefaultHardwareInfo, false);
    DebugManagerStateRestore restorer;
    DebugManager.flags.CreateMultipleRootDevices.set(numRootDevices);
    cl_uint numDevices = 0;
    cl_uint numEntries = numRootDevices;
    cl_device_id devices[numRootDevices];
    auto retVal = clGetDeviceIDs(nullptr, CL_DEVICE_TYPE_ALL, numEntries, devices, &numDevices);
    EXPECT_EQ(retVal, CL_SUCCESS);
    EXPECT_EQ(numEntries, numDevices);
    for (auto i = 0u; i < numRootDevices; i++) {
        EXPECT_EQ(devices[i], platform()->getDevice(i));
    }
}
TEST(clGetDeviceIDsTest, givenMultipleRootDevicesWhenGetDeviceIdsButNumEntriesIsLowerThanNumDevicesThenSubsetOfRootDevicesIsReturned) {
    constexpr auto numRootDevices = 3u;
    VariableBackup<bool> backup(&overrideDeviceWithDefaultHardwareInfo, false);
    DebugManagerStateRestore restorer;
    DebugManager.flags.CreateMultipleRootDevices.set(numRootDevices);
    cl_uint maxNumDevices;
    auto retVal = clGetDeviceIDs(nullptr, CL_DEVICE_TYPE_ALL, 0, nullptr, &maxNumDevices);
    EXPECT_EQ(retVal, CL_SUCCESS);
    EXPECT_EQ(numRootDevices, maxNumDevices);

    cl_uint numDevices = 0;
    cl_uint numEntries = numRootDevices - 1;
    cl_device_id devices[numRootDevices];

    const auto dummyDevice = reinterpret_cast<cl_device_id>(0x1357);
    for (auto i = 0u; i < numRootDevices; i++) {
        devices[i] = dummyDevice;
    }

    retVal = clGetDeviceIDs(nullptr, CL_DEVICE_TYPE_ALL, numEntries, devices, &numDevices);
    EXPECT_EQ(retVal, CL_SUCCESS);
    EXPECT_LT(numDevices, maxNumDevices);
    EXPECT_EQ(numEntries, numDevices);
    for (auto i = 0u; i < numEntries; i++) {
        EXPECT_EQ(devices[i], platform()->getDevice(i));
    }
    EXPECT_EQ(devices[numEntries], dummyDevice);
}

TEST(clGetDeviceIDsTest, givenMultipleRootDevicesAndLimitedNumberOfReturnedDevicesWhenGetDeviceIdsThenLimitedNumberOfRootDevicesIsReturned) {
    constexpr auto numRootDevices = 3u;
    VariableBackup<bool> backup(&overrideDeviceWithDefaultHardwareInfo, false);
    DebugManagerStateRestore restorer;
    DebugManager.flags.CreateMultipleRootDevices.set(numRootDevices);
    DebugManager.flags.LimitAmountOfReturnedDevices.set(numRootDevices - 1);

    cl_uint numDevices = 0;
    cl_uint numEntries = numRootDevices;
    cl_device_id devices[numRootDevices];

    const auto dummyDevice = reinterpret_cast<cl_device_id>(0x1357);
    for (auto i = 0u; i < numRootDevices; i++) {
        devices[i] = dummyDevice;
    }

    auto retVal = clGetDeviceIDs(nullptr, CL_DEVICE_TYPE_ALL, numEntries, devices, &numDevices);
    EXPECT_EQ(retVal, CL_SUCCESS);
    EXPECT_EQ(numEntries - 1, numDevices);
    for (auto i = 0u; i < numDevices; i++) {
        EXPECT_EQ(devices[i], platform()->getDevice(i));
    }
    EXPECT_EQ(devices[numDevices], dummyDevice);
}
} // namespace ULT