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test_blobhash_scenarios()

Documentation for tests/cancun/eip4844_blobs/test_blobhash_opcode.py::test_blobhash_scenarios@verkle@v0.0.6.

Generate fixtures for these test cases for Cancun with:

Cancun only: 

fill -v tests/cancun/eip4844_blobs/test_blobhash_opcode.py::test_blobhash_scenarios --fork=Cancun --evm-bin=/path/to/evm-tool-dev-version

For all forks up to and including Cancun: 

fill -v tests/cancun/eip4844_blobs/test_blobhash_opcode.py::test_blobhash_scenarios --until=Cancun

Tests that the BLOBHASH opcode returns the correct versioned hash for various valid indexes.

Covers various scenarios with random blob_versioned_hash values within the valid range [0, 2**256-1].

Source code in tests/cancun/eip4844_blobs/test_blobhash_opcode.py 
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@pytest.mark.parametrize(
    "scenario",
    [
        "single_valid",
        "repeated_valid",
        "valid_invalid",
        "varied_valid",
    ],
)
def test_blobhash_scenarios(
    pre: Alloc,
    scenario: str,
    blockchain_test: BlockchainTestFiller,
):
    """
    Tests that the `BLOBHASH` opcode returns the correct versioned hash for
    various valid indexes.

    Covers various scenarios with random `blob_versioned_hash` values within
    the valid range `[0, 2**256-1]`.
    """
    TOTAL_BLOCKS = 5
    b_hashes_list = BlobhashScenario.create_blob_hashes_list(length=TOTAL_BLOCKS)
    blobhash_calls = BlobhashScenario.generate_blobhash_bytecode(scenario)
    sender = pre.fund_eoa()

    blocks: List[Block] = []
    post = {}
    for i in range(TOTAL_BLOCKS):
        address = pre.deploy_contract(blobhash_calls)
        blocks.append(
            Block(
                txs=[
                    Transaction(
                        ty=Spec.BLOB_TX_TYPE,
                        sender=sender,
                        to=address,
                        data=Hash(0),
                        gas_limit=3_000_000,
                        access_list=[],
                        max_fee_per_gas=10,
                        max_priority_fee_per_gas=10,
                        max_fee_per_blob_gas=10,
                        blob_versioned_hashes=b_hashes_list[i],
                    )
                ]
            )
        )
        post[address] = Account(
            storage={
                index: b_hashes_list[i][index]
                for index in range(SpecHelpers.max_blobs_per_block())
            }
        )
    blockchain_test(
        pre=pre,
        blocks=blocks,
        post=post,
    )

Parametrized Test Cases

The interactive table below is also available as a standalone page.

Skipped Parameters

For more concise readability, the table below does not list the following parameter values: fork, blockchain_test, state_test, state_test_only, eof_test, eof_state_test.

Test ID scenario
scenario_single_valid single_valid
scenario_repeated_valid repeated_valid
scenario_valid_invalid valid_invalid
scenario_varied_valid varied_valid