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"""Test functions of context.py."""
from typing import TYPE_CHECKING
from cobra.util import HistoryManager, get_context, resettable
if TYPE_CHECKING:
from cobra import Model
def test_history_manager() -> None:
"""Test initialization and resetting of HistoryManager."""
# initialize HistoryManager
history_manager = HistoryManager()
# add non-functioning operation
history_manager(lambda: 1)
# check size of the stack
assert history_manager.size() == 1
# reset operations
history_manager.reset()
def test_get_context(model: "Model") -> None:
"""Test if context retrieval is working."""
with model as model:
# reverse optimization direcion
model.objective_direction = "min"
# retrieve context
context = get_context(model)
# check size of the context
if context:
assert context.size() == 1
# there shouldn't be any history
if context:
assert context.size() == 0
def test_resettable() -> None:
"""Test if resettable decorator is functional."""
# decorate a dummy function
@resettable
def change_my_name(old_name, new_name):
"""Change old name to new name."""
if old_name != new_name:
old_name = new_name
# call the dummy function
change_my_name("hmm", "hmmm")
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