def test_KnowledgeEngine_modify_retracts_and_declares():
from pyknow.engine import KnowledgeEngine
from unittest.mock import patch
ke = KnowledgeEngine()
with patch('pyknow.factlist.FactList') as mock:
with patch('pyknow.engine.KnowledgeEngine.declare') as declare_mock:
ke.facts = mock
ke.modify(False, False)
assert mock.retract_matching.called
assert declare_mock.called
def test_modify_retracts_and_declare():
from pyknow import KnowledgeEngine, Fact
ke = KnowledgeEngine()
f1 = ke.declare(Fact())
assert len(ke.facts) == 1
f2 = ke.modify(f1, _0='test_pos', key='test_key')
assert f1 != f2
assert len(ke.facts) == 1
assert f2.__factid__ in ke.facts
assert f2[0] == 'test_pos'
assert f2['key'] == 'test_key'
def test_modify_retracts_and_declare():
from pyknow import KnowledgeEngine, Fact
ke = KnowledgeEngine()
f1 = ke.declare(Fact())
assert len(ke.facts) == 1
f2 = ke.modify(f1, _0='test_pos', key='test_key')
assert f1 != f2
assert len(ke.facts) == 1
assert f2.__factid__ in ke.facts
assert f2[0] == 'test_pos'
assert f2['key'] == 'test_key'
