import pytest

@pytest.mark.dependency(name="a")
@pytest.mark.xfail(reason="deliberate fail")
def test_a():
    assert False

@pytest.mark.dependency(name="b")
def test_b():
    pass

@pytest.mark.dependency(name="c", depends=["a"])
def test_c():
    pass

@pytest.mark.dependency(name="d", depends=["b"])
def test_d():
    pass

@pytest.mark.dependency(name="e", depends=["b", "c"])
def test_e():
    pass