def test_separate_async_optionals_two_exist():
"""confirms that when two creation group classes have async dependencies
the class that has shared item as a dependency occurs first in a separate creation group
"""
order = has_create.creation_order(
has_create.optional_dependency_graph(Four, Three, Two))
assert has_create.separate_async_optionals(order) == [
set([One]), set([Two]),
set([Three]), set([Four])
]
def test_separate_async_optionals_not_has_create():
"""confirms that when a dependency isn't a HasCreate has_create.separate_aysnc_optionals doesn't
unnecessarily move it from the initial creation group
"""
order = has_create.creation_order(
has_create.optional_dependency_graph(Seven, Six))
assert has_create.separate_async_optionals(order) == [
set([One, IsntAHasCreate]),
set([Two, Seven]),
set([Six])
]
def test_creation_order_with_loop():
"""confirms that `has_create.creation_order()` raises toposort.CircularDependencyError when evaluating
a cyclic dependency graph
"""
dependency_graph = dict(eight=set(['seven', 'six']),
seven=set(['five']),
six=set(),
five=set(['two', 'one']),
four=set(['one']),
three=set(['two']),
two=set(['one']),
one=set(['eight']))
with pytest.raises(CircularDependencyError):
assert has_create.creation_order(dependency_graph)
def test_creation_order():
"""confirms that `has_create.creation_order()` returns a valid creation order in the desired list of sets format"""
dependency_graph = dict(
eight=set(['seven', 'six']),
seven=set(['five']),
six=set(),
five=set(['two', 'one']),
four=set(['one']),
three=set(['two']),
two=set(['one']),
one=set(),
)
desired = [set(['one', 'six']), set(['two', 'four']), set(['three', 'five']), set(['seven']), set(['eight'])]
assert has_create.creation_order(dependency_graph) == desired
def test_separate_async_optionals_none_exist():
"""confirms that when creation group classes have no async optional dependencies the order is unchanged"""
order = has_create.creation_order(
has_create.optional_dependency_graph(Three, Two, One))
assert has_create.separate_async_optionals(order) == order
