# SPDX-License-Identifier: Apache-2.0

import pytest
import torch

from tests.kernels.utils import opcheck
from vllm import _custom_ops as ops  # noqa: F401


@pytest.mark.skipif(not hasattr(torch.ops._C, "awq_dequantize"),
                    reason="AWQ is not supported on this GPU type.")
def test_awq_dequantize_opcheck(monkeypatch: pytest.MonkeyPatch):
    with monkeypatch.context() as m:
        m.setenv("VLLM_USE_TRITON_AWQ", "0")
        qweight = torch.randint(-2000000000,
                                2000000000, (8192, 256),
                                device='cuda',
                                dtype=torch.int32)
        scales = torch.rand((64, 2048), device='cuda', dtype=torch.float16)
        zeros = torch.empty((64, 256), device='cuda', dtype=torch.int32)
        split_k_iters = 0
        thx = 0
        thy = 0
        opcheck(torch.ops._C.awq_dequantize,
                (qweight, scales, zeros, split_k_iters, thx, thy))


@pytest.mark.skip(reason="Not working; needs investigation.")
@pytest.mark.skipif(not hasattr(torch.ops._C, "awq_gemm"),
                    reason="AWQ is not supported on this GPU type.")
def test_awq_gemm_opcheck(monkeypatch: pytest.MonkeyPatch):
    with monkeypatch.context() as m:
        m.setenv("VLLM_USE_TRITON_AWQ", "0")
        input = torch.rand((2, 8192), device='cuda', dtype=torch.float16)
        qweight = torch.randint(-2000000000,
                                2000000000, (8192, 256),
                                device='cuda',
                                dtype=torch.int32)
        scales = torch.randint(-2000000000,
                               2000000000, (64, 256),
                               device='cuda',
                               dtype=torch.int32)
        qzeros = torch.empty((64, 2048), device='cuda', dtype=torch.float16)
        split_k_iters = 8
        opcheck(torch.ops._C.awq_gemm,
                (input, qweight, qzeros, scales, split_k_iters))