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Test Bls12 G2msm

Documentation for tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py.

Generate fixtures for these test cases for Prague with:

Prague only: 

fill -v tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py --fork=Prague --evm-bin=/path/to/evm-tool-dev-version
For all forks up to and including Prague: 
fill -v tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py --until=Prague --evm-bin=/path/to/evm-tool-dev-version

Tests BLS12_G2MSM precompile of EIP-2537: Precompile for BLS12-381 curve operations

Tests BLS12_G2MSM precompile of EIP-2537: Precompile for BLS12-381 curve operations.

test_valid(state_test, pre, post, tx)

Test the BLS12_G2MSM precompile.

Source code in tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py 
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@pytest.mark.parametrize("input,expected_output", vectors_from_file("multiexp_G2_bls.json"))
def test_valid(
    state_test: StateTestFiller,
    pre: Alloc,
    post: dict,
    tx: Transaction,
):
    """
    Test the BLS12_G2MSM precompile.
    """
    state_test(
        env=Environment(),
        pre=pre,
        tx=tx,
        post=post,
    )

test_invalid(state_test, pre, post, tx)

Negative tests for the BLS12_G2MSM precompile.

Source code in tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py 
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@pytest.mark.parametrize(
    "input",
    vectors_from_file("fail-multiexp_G2_bls.json")
    + [
        pytest.param(
            PointG2((1, 0), (0, 0)) + Scalar(0),
            id="invalid_point_a_1",
        ),
        pytest.param(
            PointG2((0, 1), (0, 0)) + Scalar(0),
            id="invalid_point_a_2",
        ),
        pytest.param(
            PointG2((0, 0), (1, 0)) + Scalar(0),
            id="invalid_point_a_3",
        ),
        pytest.param(
            PointG2((0, 0), (0, 1)) + Scalar(0),
            id="invalid_point_a_4",
        ),
        pytest.param(
            PointG2((Spec.P, 0), (0, 0)) + Scalar(0),
            id="x_1_equal_to_p",
        ),
        pytest.param(
            PointG2((0, Spec.P), (0, 0)) + Scalar(0),
            id="x_2_equal_to_p",
        ),
        pytest.param(
            PointG2((0, 0), (Spec.P, 0)) + Scalar(0),
            id="y_1_equal_to_p",
        ),
        pytest.param(
            PointG2((0, 0), (0, Spec.P)) + Scalar(0),
            id="y_2_equal_to_p",
        ),
        pytest.param(
            b"\x80" + bytes(Spec.INF_G2)[1:] + Scalar(0),
            id="invalid_encoding",
        ),
        pytest.param(
            Spec.P2_NOT_IN_SUBGROUP + Scalar(1),
            id="bls_g2mul_not_in_subgroup",
        ),
        pytest.param(
            Spec.G2,
            id="bls_g2_truncated_input",
        ),
        # Input length tests can be found in ./test_bls12_variable_length_input_contracts.py
    ],
)
@pytest.mark.parametrize("expected_output", [Spec.INVALID], ids=[""])
def test_invalid(
    state_test: StateTestFiller,
    pre: Alloc,
    post: dict,
    tx: Transaction,
):
    """
    Negative tests for the BLS12_G2MSM precompile.
    """
    state_test(
        env=Environment(),
        pre=pre,
        tx=tx,
        post=post,
    )

test_call_types(state_test, pre, post, tx)

Test the BLS12_G2MSM precompile using different call types.

Source code in tests/prague/eip2537_bls_12_381_precompiles/test_bls12_g2msm.py 
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@pytest.mark.parametrize(
    "call_opcode",
    [
        Op.STATICCALL,
        Op.DELEGATECALL,
        Op.CALLCODE,
    ],
)
@pytest.mark.parametrize(
    "input,expected_output",
    [
        pytest.param(
            Spec.INF_G2 + Scalar(0),
            Spec.INF_G2,
            id="inf_times_zero",
        ),
    ],
)
def test_call_types(
    state_test: StateTestFiller,
    pre: Alloc,
    post: dict,
    tx: Transaction,
):
    """
    Test the BLS12_G2MSM precompile using different call types.
    """
    state_test(
        env=Environment(),
        pre=pre,
        tx=tx,
        post=post,
    )