def test_condition_hash():
from cryptoconditions.condition import Condition
condition = Condition()
# raises an exception if hash is not 32 bytes long
with raises(ValueError):
condition.hash = 'a'
# raises a ValueError if the hash is not set
with raises(ValueError):
condition.hash
# correctly set the hash
condition.hash = 'a' * 32
assert condition.hash == 'a' * 32
def condition(self):
"""
Generate condition corresponding to this fulfillment.
An important property of crypto-conditions is that the condition can always
be derived from the fulfillment. This makes it very easy to post
fulfillments to a system without having to specify which condition the
relate to. The system can keep an index of conditions and look up any
matching events related to that condition.
Return:
Condition: Condition corresponding to this fulfillment.
"""
condition = Condition()
condition.type_id = self.type_id
condition.hash = self.generate_hash()
condition.cost = self.calculate_cost()
condition.subtypes = self.subtypes
return condition
def condition(self):
"""
Generate condition corresponding to this fulfillment.
An important property of crypto-conditions is that the condition can always
be derived from the fulfillment. This makes it very easy to post
fulfillments to a system without having to specify which condition the
relate to. The system can keep an index of conditions and look up any
matching events related to that condition.
Return:
Condition: Condition corresponding to this fulfillment.
"""
condition = Condition()
condition.type_id = self.type_id
condition.hash = self.generate_hash()
condition.cost = self.calculate_cost()
condition.subtypes = self.subtypes
return condition
