Skip to content

test_delete_from_three_child_branch()

Documentation for tests/mpt/test_account_trie_structure.py::test_delete_from_three_child_branch@ffe48572.

Generate fixtures for these test cases for Bogota with:

fill -v tests/mpt/test_account_trie_structure.py::test_delete_from_three_child_branch --fork Bogota

Delete one of three accounts under one branch.

pre: .. -> branch@4 -> {p, q, doomed} post: .. -> branch@4 -> {p, q}

Source code in tests/mpt/test_account_trie_structure.py 
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
def test_delete_from_three_child_branch(
    state_test: StateTestFiller, pre: Alloc
) -> None:
    """
    Delete one of three accounts under one branch.

    pre:  .. -> branch@4 -> {p, q, doomed}
    post: .. -> branch@4 -> {p, q}
    """
    p, q = (Address(x) for x in TWO_ADDRS_EXT4)
    doomed = _create2_address(COLLAPSE_SALT)
    pre.fund_address(p, amount=1)
    pre.fund_address(q, amount=2)
    pre.fund_address(doomed, amount=FUNDING)
    _ensure_factory(pre)
    sender = pre.fund_eoa()
    assert node_at(account_shape(pre, p), 4) == ("branch", 3)
    after = account_shape(_after_block(pre, doomed), p)
    assert node_at(after, 4) == ("branch", 2)

    state_test(
        pre=pre,
        tx=_delete_tx(sender, COLLAPSE_SALT),
        post={
            p: Account(balance=1),
            q: Account(balance=2),
            doomed: Account.NONEXISTENT,
        },
    )

Parametrized Test Cases

This test generates 1 parametrized test case across 3 forks.