def test_get_task_result_positive(self):
"""Test get_task_result method positive result."""
obj = TaskManager()
obj._results_by_task_id = {"task_id": "result"}
obj.get_task_result("task_id")
def test_get_task_result_id_not_present(self):
"""Test get_task_result method id not present."""
obj = TaskManager()
with self.assertRaises(ValueError):
obj.get_task_result("task_id")