def test_fact_setitem_do_raise_after_declare():
f = Fact()
ke = KnowledgeEngine()
ke.reset()
ke.declare(f)
with pytest.raises(RuntimeError):
f[0] = 1
def test_KnowledgeEngine_reset_declare_initialfact():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.reset()
assert len(ke.facts) == 1
def test_KnowledgeEngine_reset_resets_facts():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.facts = None
ke.reset()
assert ke.facts is not None
def test_KnowledgeEngine_reset_resets_agenda():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.agenda = None
ke.reset()
assert ke.agenda is not None
def test_KnowledgeEngine_reset_resets_facts():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.facts = None
ke.reset()
assert ke.facts is not None
def test_KnowledgeEngine_reset_resets_agenda():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.agenda = None
ke.reset()
assert ke.agenda is not None
def test_KnowledgeEngine_reset_declare_initialfact():
from pyknow.engine import KnowledgeEngine
ke = KnowledgeEngine()
ke.reset()
assert len(ke.facts) == 1
def test_double_underscore_raise_on_declare():
ke = KnowledgeEngine()
ke.reset()
ke.declare(Fact(__startwithdoubleunderscore__=True))
with pytest.raises(KeyError):
ke.declare(Fact(key__with__double__underscores=True))
def test_double_underscore_raise_on_declare():
ke = KnowledgeEngine()
ke.reset()
ke.declare(Fact(__startwithdoubleunderscore__=True))
with pytest.raises(KeyError):
ke.declare(Fact(key__with__double__underscores=True))
def test_fact_setitem_do_raise_after_declare():
f = Fact()
ke = KnowledgeEngine()
ke.reset()
ke.declare(f)
with pytest.raises(RuntimeError):
f[0] = 1
def test_KnowledgeEngine_reset_declares_InitialFact():
from pyknow.engine import KnowledgeEngine
from pyknow.fact import InitialFact
ke = KnowledgeEngine()
assert not ke._facts.matches(InitialFact())
ke.reset()
assert ke._facts.matches(InitialFact())
def test_KnowledgeEngine_reset():
"""
Given a set of fixed facts, they're still there
after a reset.
Also, we have in account that InitialFact() is always there.
And that if we add a normal fact after that, it's not persistent
"""
from pyknow.engine import KnowledgeEngine
from pyknow.fact import Fact, L
ke = KnowledgeEngine()
ke.deffacts(Fact(foo=L(1)))
ke.deffacts(Fact(foo=L(1), bar=L(2)))
ke.reset()
assert len(ke.facts.facts) == 3
ke = KnowledgeEngine()
ke.deffacts(Fact(foo=L(1)))
ke.declare(Fact(foo=L(9)))
ke.deffacts(Fact(foo=L(1), bar=L(2)))
ke.reset()
assert len(ke.facts.facts) == 3
ke = KnowledgeEngine()
ke.deffacts(Fact(foo=L(1)))
ke.declare(Fact(foo=L(9)))
ke.reset()
assert len(ke.facts.facts) == 2
