def test_token_initialization_conversions():
"""
Token.data is modified in this way:
- If is a Fact: Converted to a Set containing this Fact.
- An interable of Facts: Converter to a set of Facts.
"""
from pyknow.matchers.rete.token import Token
from pyknow.fact import Fact
t1 = Token(Token.TagType.VALID, Fact())
assert t1.data == {Fact()}
t2 = Token(Token.TagType.VALID, [Fact(a=1), Fact(b=2)])
assert t2.data == {Fact(a=1), Fact(b=2)}
def test_token_initialization_types():
"""
Token.tag must be a Tag
Token.data can be:
- A Fact
- An interable of Facts
"""
from pyknow.matchers.rete.token import Token
from pyknow.fact import Fact
with pytest.raises(TypeError):
Token(None, Fact())
with pytest.raises(TypeError):
Token(Token.TagType.VALID, None)
with pytest.raises(TypeError):
Token(Token.TagType.VALID, [Fact(), None])
with pytest.raises(TypeError):
Token(Token.TagType.VALID, [Fact()], [])
# THIS MUST NOT RAISE
Token(Token.TagType.VALID, Fact(), {})
Token(Token.TagType.VALID, [Fact(), Fact()], {})
def test_token_shortcut_invalid():
from pyknow.matchers.rete.token import Token
assert Token.invalid([]) == Token(Token.TagType.INVALID, [])