test_reserve_price_boundary()

Documentation for tests/osaka/eip7918_blob_reserve_price/test_blob_base_fee.py::test_reserve_price_boundary@892e6d1e.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/osaka/eip7918_blob_reserve_price/test_blob_base_fee.py::test_reserve_price_boundary --fork Amsterdam

Tests the reserve price boundary mechanism.

The block base fee per gas is calculated as (8 * blob_base_fee) + delta, where 8 * blob_base_fee is the boundary at which reserve_price equals blob_gas_price.

Tests include: - Low excess blob scenarios (blob_gas_price = 1) with various deltas - High blob gas price scenarios (2, 3, 5, 10) at exact equality boundary

Example scenarios: - delta < 0: reserve inactive, effective_fee = blob_gas_price - delta = 0: equality boundary, reserve inactive (uses > not >=) - delta > 0: reserve active, effective_fee = reserve_price

Source code in tests/osaka/eip7918_blob_reserve_price/test_blob_base_fee.py

@pytest.mark.parametrize_by_fork(
    "parent_excess_blobs,block_base_fee_per_gas_delta",
    get_boundary_scenarios,
)
@pytest.mark.eels_base_coverage
def test_reserve_price_boundary(
    blockchain_test: BlockchainTestFiller,
    env: Environment,
    pre: Alloc,
    block: Block,
    post: Dict[Address, Account],
) -> None:
    """
    Tests the reserve price boundary mechanism.

    The block base fee per gas is calculated as (8 * blob_base_fee) + delta,
    where 8 * blob_base_fee is the boundary at which reserve_price equals
    blob_gas_price.

    Tests include:
    - Low excess blob scenarios (blob_gas_price = 1) with various deltas
    - High blob gas price scenarios (2, 3, 5, 10) at exact equality boundary

    Example scenarios:
    - delta < 0: reserve inactive, effective_fee = blob_gas_price
    - delta = 0: equality boundary, reserve inactive (uses > not >=)
    - delta > 0: reserve active, effective_fee = reserve_price
    """
    blockchain_test(
        genesis_environment=env,
        pre=pre,
        blocks=[block],
        post=post,
    )

Parametrized Test Cases

This test generates 30 parametrized test cases across 2 forks.