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import pytest
import torch

import cutlass_api


pytestmark = pytest.mark.arch("80")


def test_basic_keywords():
    def epi(accum, C, alpha, beta):
        D = (alpha * accum) + (beta * C)
        return D

    cutlass_api.arguments.EpilogueArguments(
        epilogue_fn=epi,
        D=torch.randn(10, 10),
        C=torch.randn(10, 10),
        alpha=1.0,
        beta=1.0,
    )


def test_missing_keywords():
    epifn = """
def epi(accum, C, alpha, beta):
    D = (alpha * accum) + (beta * C)
    F = relu(D)
    return D, F
"""
    try:
        # Missing F
        cutlass_api.arguments.EpilogueArguments(
            epilogue_fn=epifn,
            D=torch.randn(10, 10),
            C=torch.randn(10, 10),
            alpha=1.0,
            beta=1.0,
        )
    except ValueError as e:
        assert "F" in str(e)
    else:
        assert False, "Failed to catch missing keyword"


def test_extra_keywords():
    epifn = """
def epi(accum, C, alpha, beta):
    D = (alpha * accum) + (beta * C)
    F = relu(D)
    return D, F
"""
    try:
        cutlass_api.arguments.EpilogueArguments(
            epilogue_fn=epifn,
            D=torch.randn(10, 10),
            C=torch.randn(10, 10),
            alpha=1.0,
            beta=1.0,
            F=torch.randn(10, 10),
            gamma=3.0,
        )
    except ValueError as e:
        assert "gamma" in str(e)
    else:
        assert False, "Failed to catch extra keyword"