Test Blob Txs

Documentation for tests/cancun/eip4844_blobs/test_blob_txs.py@5e6a38e0.

Generate fixtures for these test cases for Prague with:

fill -v tests/cancun/eip4844_blobs/test_blob_txs.py --fork Prague

Tests blob type transactions for EIP-4844: Shard Blob Transactions

Test blob type transactions for EIP-4844: Shard Blob Transactions.

Adding a new test

Add a function that is named test_<test_name> and takes at least the following arguments:

• blockchain_test or state_test
• pre
• env
• block or txs

All other pytest.fixture fixtures can be parametrized to generate new combinations and test cases.

Test Functions Overview

Name	Type	Cases (Prague)	Description
test_valid_blob_tx_combinations	blockchain_test	169	Test all valid blob combinations in a single block, assuming a given value of
test_invalid_tx_max_fee_per_blob_gas	blockchain_test	2	Reject blocks with invalid blob txs.
test_invalid_tx_max_fee_per_blob_gas_state	state_test_only	0	Reject an invalid blob transaction.
test_invalid_normal_gas	state_test	1	Reject an invalid blob transaction.
test_invalid_block_blob_count	blockchain_test	80	Test all invalid blob combinations in a single block, where the sum of all blobs in a block is
test_insufficient_balance_blob_tx	state_test	144	Reject blocks where user cannot afford the blob gas specified (but
test_sufficient_balance_blob_tx	state_test	288	Check that transaction is accepted when user can exactly afford the blob gas specified (and
test_sufficient_balance_blob_tx_pre_fund_tx	blockchain_test	288	Check that transaction is accepted when user can exactly afford the blob gas specified (and
test_blob_gas_subtraction_tx	state_test	128	Check that the blob gas fee for a transaction is subtracted from the sender balance before the
test_insufficient_balance_blob_tx_combinations	blockchain_test	169	Reject all valid blob transaction combinations in a block, but block is invalid.
test_invalid_tx_blob_count	state_test	2	Reject blocks that include blob transactions with invalid blob counts.
test_invalid_blob_hash_versioning_single_tx	state_test	4	Reject blob transactions with invalid blob hash version.
test_invalid_blob_hash_versioning_multiple_txs	blockchain_test	4	Reject blocks that include blob transactions with invalid blob hash
test_invalid_blob_tx_contract_creation	blockchain_test	1	Reject blocks that include blob transactions that have nil to value (contract creating).
test_blob_tx_attribute_opcodes	state_test	2	Test opcodes that read transaction attributes work properly for blob type transactions.
test_blob_tx_attribute_value_opcode	state_test	3	Test the VALUE opcode with different blob type transaction value amounts.
test_blob_tx_attribute_calldata_opcodes	state_test	9	Test calldata related opcodes to verify their behavior is not affected by blobs.
test_blob_tx_attribute_gasprice_opcode	state_test	4	Test GASPRICE opcode to sanity check that the blob gas fee does not affect its calculation.
test_blob_type_tx_pre_fork	state_test	0	Reject blocks with blob type transactions before Cancun fork.