test_blake2_precompile_delegatecall()

Documentation for tests/istanbul/eip152_blake2/test_blake2_delegatecall.py::test_blake2_precompile_delegatecall@44293f1e.

Generate fixtures for these test cases for Prague with:

fill -v tests/istanbul/eip152_blake2/test_blake2_delegatecall.py::test_blake2_precompile_delegatecall --fork Prague

Test delegatecall consumes specified gas for the Blake2B precompile when it exists.

Source code in tests/istanbul/eip152_blake2/test_blake2_delegatecall.py

@pytest.mark.valid_from("ConstantinopleFix")
def test_blake2_precompile_delegatecall(state_test: StateTestFiller, pre: Alloc, fork: Fork):
    """Test delegatecall consumes specified gas for the Blake2B precompile when it exists."""
    env = Environment()

    account = pre.deploy_contract(
        Op.SSTORE(
            0,
            Op.DELEGATECALL(
                gas=1,
                address=Spec.BLAKE2_PRECOMPILE_ADDRESS,
            ),
        )
        + Op.STOP,
        storage={0: 0xDEADBEEF},
    )

    tx = Transaction(
        to=account,
        sender=pre.fund_eoa(),
        gas_limit=90_000,
        protected=True,
    )

    # If precompile exists, DELEGATECALL will fail, otherwise DELEGATECALL will succeed
    post = {
        account: Account(
            storage={
                0: "0x00" if fork >= Istanbul else "0x01",
            }
        )
    }

    state_test(env=env, pre=pre, post=post, tx=tx)

Parametrized Test Cases

This test case is only parametrized by fork and fixture format.

Fork All Forks ConstantinopleFix Istanbul Berlin London Paris Shanghai Cancun Prague Osaka

Fixture Type All Fixture Types state_test blockchain_test

Test ID (Abbreviated)
...fork_ConstantinopleFix-state_test
...fork_ConstantinopleFix-blockchain_test_from_state_test
...fork_Istanbul-state_test
...fork_Istanbul-blockchain_test_from_state_test
...fork_Berlin-state_test
...fork_Berlin-blockchain_test_from_state_test
...fork_London-state_test
...fork_London-blockchain_test_from_state_test
...fork_Paris-state_test
...fork_Paris-blockchain_test_from_state_test
...fork_Shanghai-state_test
...fork_Shanghai-blockchain_test_from_state_test
...fork_Cancun-state_test
...fork_Cancun-blockchain_test_from_state_test
...fork_Prague-state_test
...fork_Prague-blockchain_test_from_state_test
...fork_Osaka-state_test
...fork_Osaka-blockchain_test_from_state_test