eth2.0-specs/tests/formats/operations/README.md

Operations tests

The different kinds of operations ("transactions") are tested individually with test handlers.

Test case format

meta.yaml

description: string    -- Optional description of test case, purely for debugging purposes.
                          Tests should use the directory name of the test case as identifier, not the description.
bls_setting: int       -- see general test-format spec.

pre.ssz_snappy

An SSZ-snappy encoded BeaconState, the state before applying the operation.

<input-name>.ssz_snappy

An SSZ-snappy encoded operation object, e.g. a ProposerSlashing, or Deposit.

post.ssz_snappy

An SSZ-snappy encoded BeaconState, the state after applying the operation. No value if operation processing is aborted.

Condition

A handler of the operations test-runner should process these cases, calling the corresponding processing implementation. This excludes the other parts of the block-transition.

Operations:

operation-name	operation-object	input name	processing call
attestation	Attestation	attestation	process_attestation(state, attestation)
attester_slashing	AttesterSlashing	attester_slashing	process_attester_slashing(state, attester_slashing)
block_header	BeaconBlock	block	process_block_header(state, block)
deposit	Deposit	deposit	process_deposit(state, deposit)
proposer_slashing	ProposerSlashing	proposer_slashing	process_proposer_slashing(state, proposer_slashing)
voluntary_exit	SignedVoluntaryExit	voluntary_exit	process_voluntary_exit(state, voluntary_exit)
sync_aggregate	SyncAggregate	sync_aggregate	process_sync_aggregate(state, sync_aggregate) (new in Altair)
execution_payload	ExecutionPayload	execution_payload	process_execution_payload(state, execution_payload) (new in Bellatrix)

Note that block_header is not strictly an operation (and is a full Block), but processed in the same manner, and hence included here.

The execution_payload processing normally requires a verify_execution_state_transition(execution_payload), a responsibility of an (external) execution engine. During testing this execution is mocked, an execution.yml is provided instead: a dict containing an execution_valid boolean field with the verification result.

The resulting state should match the expected post state, or if the post state is left blank, the handler should reject the input operation as invalid.