Skip to content

test_delegate_call_targets()

Documentation for tests/prague/eip7702_set_code_tx/test_calls.py::test_delegate_call_targets@20373115.

Generate fixtures for these test cases for Amsterdam with:

fill -v tests/prague/eip7702_set_code_tx/test_calls.py::test_delegate_call_targets --fork Amsterdam

Test contracts doing delegatecall to various targets resolved via 7702 delegation.

Source code in tests/prague/eip7702_set_code_tx/test_calls.py 
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
@pytest.mark.parametrize("target_account_type", TargetAccountType)
@pytest.mark.parametrize("delegate", [True, False])
@pytest.mark.parametrize("sender_delegated", [True, False])
@pytest.mark.parametrize("call_from_initcode", [True, False])
def test_delegate_call_targets(
    state_test: StateTestFiller,
    pre: Alloc,
    target_account_type: TargetAccountType,
    target_address: Address,
    delegate: bool,
    sender_delegated: bool,
    call_from_initcode: bool,
) -> None:
    """
    Test contracts doing delegatecall to various targets resolved via 7702
    delegation.
    """
    env = Environment()

    if delegate:
        target_address = pre.fund_eoa(0, delegation=target_address)

    if sender_delegated:
        sender_delegation_target = pre.deploy_contract(Op.STOP)
        sender_address = pre.fund_eoa(delegation=sender_delegation_target)
    else:
        sender_address = pre.fund_eoa()

    delegate_call_code = Op.SSTORE(
        slot_call_result, Op.DELEGATECALL(address=target_address)
    ) + Op.SSTORE(slot_code_worked, value_code_worked)

    if call_from_initcode:
        # Call from initcode
        caller_contract = delegate_call_code + Op.RETURN(0, 0)
        tx = Transaction(
            sender=sender_address,
            to=None,
            data=caller_contract,
            gas_limit=4_000_000,
        )
        calling_contract_address = tx.created_contract
    else:
        # Normal call from existing contract
        caller_contract = delegate_call_code + Op.STOP
        calling_contract_address = pre.deploy_contract(caller_contract)

        tx = Transaction(
            sender=sender_address,
            to=calling_contract_address,
            gas_limit=4_000_000,
        )

    calling_storage = {
        slot_code_worked: value_code_worked,
        slot_call_result: LEGACY_CALL_FAILURE
        if target_account_type
        in [
            TargetAccountType.LEGACY_CONTRACT_INVALID,
            TargetAccountType.LEGACY_CONTRACT_REVERT,
        ]
        else LEGACY_CALL_SUCCESS,
    }

    post = {
        calling_contract_address: Account(storage=calling_storage),
    }

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

Parametrized Test Cases

This test generates 48 parametrized test cases across 3 forks.