/*
Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.

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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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*/

#include <hip_test_common.hh>
#include <hip/hip_runtime_api.h>

/**
 * @addtogroup hipExtGetLinkTypeAndHopCount hipExtGetLinkTypeAndHopCount
 * @{
 * @ingroup DeviceTest
 * `hipExtGetLinkTypeAndHopCount(int device1, int device2, uint32_t* linktype, uint32_t* hopcount)` -
 * Returns the link type and hop count between two devices.
 */

#if __linux__
#if HT_AMD
/**
 * Test Description
 * ------------------------
 *  - Check commutativity of devices for every device combination.
 * Test source
 * ------------------------
 *  - unit/device/hipExtGetLinkTypeAndHopCount.cc
 * Test requirements
 * ------------------------
 *  - Platform specific (AMD)
 *  - HIP_VERSION >= 5.2
 */
TEST_CASE("Unit_hipExtGetLinkTypeAndHopCount_Positive_Basic") {
  const auto device1 = GENERATE(range(0, HipTest::getDeviceCount()));
  const auto device2 = GENERATE(range(0, HipTest::getDeviceCount()));

  if (device1 == device2) {
    return;
  }

  uint32_t link_type1 = -1, hop_count1 = -1;
  uint32_t link_type2 = -1, hop_count2 = -1;

  HIP_CHECK(hipExtGetLinkTypeAndHopCount(device1, device2, &link_type1, &hop_count1));
  HIP_CHECK(hipExtGetLinkTypeAndHopCount(device2, device1, &link_type2, &hop_count2));

  REQUIRE(hop_count1 > 0);

  REQUIRE(hop_count1 == hop_count2);
  REQUIRE(link_type1 == link_type2);
}

/**
 * Test Description
 * ------------------------
 *  - Validates handling of invalid arguments:
 *    -# When creating the link between the same device
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When device ordinance for the first device is out of bounds
 *      - Expected output: return `hipErrorInvalidDevice`
 *    -# When device ordinance for the second device is out of bounds
 *      - Expected output: return `hipErrorInvalidDevice`
 *    -# When device ordinance for both devices is out of bounds
 *      - Expected output: return `hipErrorInvalidDevice`
 *    -# When device ordinance for the first device is < 0
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When device ordinance for the second device is < 0
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When device ordinance for both devices is < 0
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When pointer to the link type is `nullptr`
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When pointer to the hop count is `nullptr`
 *      - Expected output: return `hipErrorInvalidValue`
 *    -# When both pointers are `nullptr`
 *      - Expected output: return `hipErrorInvalidValue`
 * Test source
 * ------------------------
 *  - unit/device/hipExtGetLinkTypeAndHopCount.cc
 * Test requirements
 * ------------------------
 *  - Platform specific (AMD)
 *  - HIP_VERSION >= 5.2
 */
TEST_CASE("Unit_hipExtGetLinkTypeAndHopCount_Negative_Parameters") {
  uint32_t link_type, hop_count;
  SECTION("same device") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(0, 0, &link_type, &hop_count),
                    hipErrorInvalidValue);
  }

  SECTION("device ordinance 1 too large") {
    HIP_CHECK_ERROR(
        hipExtGetLinkTypeAndHopCount(HipTest::getDeviceCount(), 0, &link_type, &hop_count),
        hipErrorInvalidDevice);
  }

  SECTION("device ordinance 2 too large") {
    HIP_CHECK_ERROR(
        hipExtGetLinkTypeAndHopCount(0, HipTest::getDeviceCount(), &link_type, &hop_count),
        hipErrorInvalidDevice);
  }

  SECTION("device ordinances too large") {
    HIP_CHECK_ERROR(
        hipExtGetLinkTypeAndHopCount(HipTest::getDeviceCount(), HipTest::getDeviceCount() + 1,
                                     &link_type, &hop_count),
        hipErrorInvalidDevice);
  }

  SECTION("device 1 < 0") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(-1, 0, &link_type, &hop_count),
                    hipErrorInvalidValue);
  }

  SECTION("device 2 < 0") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(0, -1, &link_type, &hop_count),
                    hipErrorInvalidValue);
  }

  SECTION("both devices < 0") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(-1, -2, &link_type, &hop_count),
                    hipErrorInvalidValue);
  }

  SECTION("linktype == nullptr") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(0, 1, nullptr, &hop_count), hipErrorInvalidValue);
  }

  SECTION("hopcount == nullptr") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(0, 1, &link_type, nullptr), hipErrorInvalidValue);
  }

  SECTION("linktype and hopcount == nullptr") {
    HIP_CHECK_ERROR(hipExtGetLinkTypeAndHopCount(0, 1, nullptr, nullptr), hipErrorInvalidValue);
  }
}
#endif
#endif
