494 lines
23 KiB
Python
494 lines
23 KiB
Python
import ast
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import pytest
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from core.builtin_concepts import BuiltinConcepts, ReturnValueConcept
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from core.concept import Concept, DoNotResolve
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from core.rule import Rule
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from core.sheerka.services.SheerkaExecute import ParserInput
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from core.tokenizer import TokenKind
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from parsers.BaseParser import UnexpectedEofParsingError, UnexpectedTokenParsingError
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from parsers.LogicalOperatorParser import LogicalOperatorParser
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from parsers.PythonParser import PythonNode
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from parsers.expressions import TrueifyVisitor, IsAQuestionVisitor, AndNode, LeftPartNotFoundError, \
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ParenthesisMismatchError
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from sheerkarete.network import ReteNetwork
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from tests.TestUsingMemoryBasedSheerka import TestUsingMemoryBasedSheerka
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from tests.parsers.parsers_utils import compute_expected_array, resolve_test_concept, EXPR, OR, AND, NOT, \
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get_expr_node_from_test_node, get_rete_conditions, CMV, CNC, CC, compare_with_test_object
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class TestLogicalOperatorParser(TestUsingMemoryBasedSheerka):
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def init_parser(self):
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sheerka, context = self.init_concepts()
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parser = LogicalOperatorParser()
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return sheerka, context, parser
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@pytest.mark.parametrize("expression, expected", [
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("one complicated expression", EXPR("one complicated expression")),
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("function_call(a,b,c)", EXPR("function_call(a,b,c)")),
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("one expression or another expression", OR(EXPR("one expression"), EXPR("another expression"))),
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("one expression and another expression", AND(EXPR("one expression"), EXPR("another expression"))),
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("not one", NOT(EXPR("one"))),
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("one and not two", AND(EXPR("one"), NOT(EXPR("two")))),
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("not one and two", AND(NOT(EXPR("one")), EXPR("two"))),
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("one or not two", OR(EXPR("one"), NOT(EXPR("two")))),
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("not one or two", OR(NOT(EXPR("one")), EXPR("two"))),
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("one or two or three", OR(EXPR("one"), EXPR("two"), EXPR("three"))),
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("one and two and three", AND(EXPR("one"), EXPR("two"), EXPR("three"))),
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("one or two and three", OR(EXPR("one"), AND(EXPR("two"), EXPR("three")))),
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("one and two or three", OR(AND(EXPR("one"), EXPR("two")), EXPR("three"))),
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("one and (two or three)", AND(EXPR("one"), OR(EXPR("two"), EXPR("three")), source="one and (two or three)")),
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("not not one", NOT(NOT(EXPR("one")))),
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("not (one and two)", NOT(AND(EXPR("one"), EXPR("two")), source="not (one and two)")),
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("one 'and' two or three", OR(EXPR("one 'and' two"), EXPR("three"))),
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("not ((a or b) and (c or d))", NOT(AND(OR(EXPR("a"), EXPR("b")), OR(EXPR("c"), EXPR("d")),
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source="(a or b) and (c or d)"),
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source="not ((a or b) and (c or d))")),
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("not ((a and b) or (c and d))", NOT(OR(AND(EXPR("a"), EXPR("b")), AND(EXPR("c"), EXPR("d")),
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source="(a and b) or (c and d)"),
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source="not ((a and b) or (c and d))")),
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("(one and two)", AND(EXPR("one"), EXPR("two"))),
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("(one or two)", OR(EXPR("one"), EXPR("two"))),
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("(not one)", NOT(EXPR("one"))),
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])
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def test_i_can_parse_expression(self, expression, expected):
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sheerka, context, parser = self.init_parser()
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expected = get_expr_node_from_test_node(expression, expected)
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res = parser.parse(context, ParserInput(expression))
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wrapper = res.body
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expressions = res.body.body
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assert res.status
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assert sheerka.isinstance(wrapper, BuiltinConcepts.PARSER_RESULT)
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assert expressions == expected
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@pytest.mark.parametrize("expression, expected_errors", [
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("one or", [UnexpectedEofParsingError("When parsing 'or'")]),
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("one and", [UnexpectedEofParsingError("When parsing 'and'")]),
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("and one", [LeftPartNotFoundError()]),
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("or one", [LeftPartNotFoundError()]),
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("or", [LeftPartNotFoundError(), UnexpectedEofParsingError("When parsing 'or'")]),
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("and", [LeftPartNotFoundError(), UnexpectedEofParsingError("When parsing 'and'")]),
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])
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def test_i_can_detect_error(self, expression, expected_errors):
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sheerka, context, parser = self.init_parser()
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res = parser.parse(context, ParserInput(expression))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert res.body.body == expected_errors
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def test_i_can_detect_unexpected_not_error(self):
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sheerka, context, parser = self.init_parser()
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expression = "a cat is not a human"
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res = parser.parse(context, ParserInput(expression))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], UnexpectedTokenParsingError)
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def test_i_can_detect_unbalanced_parenthesis(self):
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sheerka, context, parser = self.init_parser()
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res = parser.parse(context, ParserInput("("))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.NOT_FOR_ME)
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assert isinstance(res.body.reason[0], UnexpectedTokenParsingError)
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assert res.body.reason[0].token.type == TokenKind.EOF
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assert res.body.reason[0].expected_tokens == [TokenKind.RPAR]
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res = parser.parse(context, ParserInput(")"))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.NOT_FOR_ME)
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assert isinstance(res.body.reason[0], UnexpectedTokenParsingError)
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assert res.body.reason[0].token.type == TokenKind.RPAR
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assert res.body.reason[0].expected_tokens == []
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res = parser.parse(context, ParserInput("one and two("))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], ParenthesisMismatchError)
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assert res.body.body[0].token.type == TokenKind.LPAR
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assert res.body.body[0].token.index == 11
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res = parser.parse(context, ParserInput("one ("))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.NOT_FOR_ME)
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assert isinstance(res.body.reason[0], ParenthesisMismatchError)
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assert res.body.reason[0].token.type == TokenKind.LPAR
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assert res.body.reason[0].token.index == 4
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res = parser.parse(context, ParserInput("one (and"))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], ParenthesisMismatchError)
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assert res.body.body[0].token.type == TokenKind.LPAR
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assert res.body.body[0].token.index == 4
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res = parser.parse(context, ParserInput("one and two)"))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], UnexpectedTokenParsingError)
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assert res.body.body[0].token.type == TokenKind.RPAR
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assert res.body.body[0].expected_tokens == []
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res = parser.parse(context, ParserInput("one )"))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], UnexpectedTokenParsingError)
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assert res.body.body[0].token.type == TokenKind.RPAR
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assert res.body.body[0].expected_tokens == []
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res = parser.parse(context, ParserInput("one ) and"))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.ERROR)
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assert isinstance(res.body.body[0], UnexpectedTokenParsingError)
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assert res.body.body[0].token.type == TokenKind.RPAR
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assert res.body.body[0].expected_tokens == []
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def test_i_can_detect_empty_expression(self):
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sheerka, context, parser = self.init_parser()
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res = parser.parse(context, ParserInput(""))
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assert not res.status
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assert sheerka.isinstance(res.body, BuiltinConcepts.IS_EMPTY)
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@pytest.mark.parametrize("expression, to_trueify, to_skip, expected", [
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("a", ["b"], ["a"], "a"),
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("b", ["b"], ["a"], "True"),
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("a and b", ["b"], ["a"], "a and True"),
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("b or a", ["b"], ["a"], "True or a"),
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("isinstance(b, str)", ["b"], ["a"], "True"),
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("isinstance(b, str) or instance(a, str)", ["b"], ["a"], "True or instance(a, str)"),
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("a and b or c", ["b", "c"], ["a"], "a and True or True"),
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("a + b or a + c", ["b", "c"], ["a"], "a + b or a + c"),
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])
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def test_i_can_trueify(self, expression, to_trueify, to_skip, expected):
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sheerka, context, parser = self.init_parser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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translated_node = TrueifyVisitor(to_trueify, to_skip).visit(expr_node)
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assert str(translated_node) == expected
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@pytest.mark.parametrize("expression, expected", [
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("foo", None),
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("", None),
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("is_question()", True),
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(" is_question() ", True),
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("is_question ( ) ", True),
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("is _question()", None),
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("is_ question()", None),
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("is _ question()", None),
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("context.in_context(BuiltinConcepts.EVAL_QUESTION_REQUESTED)", True),
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("not is_question()", False),
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("not context.in_context(BuiltinConcepts.EVAL_QUESTION_REQUESTED)", False),
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("not foo", None),
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("not is_question() and not is_question()", False),
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("not is_question() and is_question()", False),
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("not is_question() and foo", False),
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("is_question() and not is_question()", False),
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("is_question() and is_question()", True),
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("is_question() and foo", True),
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("foo and not is_question()", False),
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("foo and is_question()", True),
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("foo and bar", None),
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("not is_question() or not is_question()", False),
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("not is_question() or is_question()", True),
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("not is_question() or foo", False),
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("is_question() or not is_question()", True),
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("is_question() or is_question()", True),
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("is_question() or foo", True),
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("foo or not is_question()", False),
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("foo or is_question()", True),
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("foo or bar", None),
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])
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def test_is_a_question(self, expression, expected):
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sheerka, context, parser = self.init_parser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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assert IsAQuestionVisitor().visit(expr_node) == expected
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@pytest.mark.parametrize("expression, expected", [
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("foo", "foo"),
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("one two", "one two"),
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("foo is a bar", CMV("is a", x='foo', y='bar')),
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("one two is a bar", [CNC("is a", "one two is a bar", x="one two", y="bar")]),
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("foo is an foo bar",
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[CNC("is an", "foo is an foo bar", x=DoNotResolve(value='foo'), exclude_body=True)]),
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])
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def test_i_can_get_compiled_expr_from_simple_concepts_expressions(self, expression, expected):
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concepts_map = {
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"foo": Concept("foo"),
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"bar": Concept("bar"),
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"one two": Concept("one two"),
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"is a": Concept("x is a y").def_var("x").def_var("y"),
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"is an": Concept("x is an y", definition="('foo'|'bar')=x 'is an' 'foo bar'").def_var("x"),
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}
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sheerka, context, *concepts = self.init_test().with_concepts(*concepts_map.values(), create_new=True).unpack()
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parser = LogicalOperatorParser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, [expr_node], "test")
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assert len(return_values) == 1
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ret = return_values[0]
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if isinstance(expected, list):
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expected_nodes = compute_expected_array(concepts_map, expression, expected)
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compare_with_test_object(ret.body.body, expected_nodes)
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else:
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expected_concept = resolve_test_concept(concepts_map, expected)
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compare_with_test_object(ret.body.body, expected_concept)
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@pytest.mark.parametrize("expression", [
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"a == 5",
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"foo > 5",
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"func() == 5",
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"not a == 5",
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"not foo > 5",
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"not func() == 5",
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"isinstance(a, int)",
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"func()",
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"not isinstance(a, int)",
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"not func()"
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])
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def test_i_can_get_compiled_expr_from_simple_python_expressions(self, expression):
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sheerka, context, = self.init_test().unpack()
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parser = LogicalOperatorParser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, [expr_node], "test")
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assert len(return_values) == 1
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ret = return_values[0]
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assert ret.status
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python_node = ret.body.body.get_python_node()
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_ast = ast.parse(expression, mode="eval")
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expected_python_node = PythonNode(expression, _ast)
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assert python_node == expected_python_node
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@pytest.mark.parametrize("expression", [
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"a and not b",
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"not b and a",
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"__ret and not __ret.status",
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])
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def test_i_can_compile_negative_conjunctions_when_pure_python(self, expression):
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sheerka, context, *concepts = self.init_concepts("foo")
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parser = LogicalOperatorParser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, expr_node.parts, "test")
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ast_ = ast.parse(expression, "<source>", 'eval')
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expected_python_node = PythonNode(expression, ast_)
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assert len(return_values) == 1
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ret = return_values[0]
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assert sheerka.objvalue(ret) == expected_python_node
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@pytest.mark.parametrize("expression, text_to_compile", [
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("foo bar == 5", "__C__foo0bar__1001__C__ == 5"),
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("not foo bar == 5", "not __C__foo0bar__1001__C__ == 5"),
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])
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def test_i_can_get_compiled_expr_from_python_and_concept(self, expression, text_to_compile):
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sheerka, context, *concepts = self.init_test().with_concepts(Concept("foo bar"), create_new=True).unpack()
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parser = LogicalOperatorParser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, [expr_node], "test")
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assert len(return_values) == 1
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ret = return_values[0]
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assert ret.status
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python_node = ret.body.body.get_python_node()
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_ast = ast.parse(text_to_compile, mode="eval")
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expected_python_node = PythonNode(text_to_compile, _ast, expression)
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assert python_node == expected_python_node
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def test_i_can_get_compiled_expr_from__mix_of_concepts_and_python(self):
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sheerka, context, animal, cat, dog, pet, is_a, is_an = self.init_test().with_concepts(
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Concept("animal"),
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Concept("a cat"),
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Concept("dog"),
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Concept("pet"),
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Concept("x is a y", pre="is_question()", body="isinstance(x, y)").def_var("x").def_var("y"),
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Concept("x is an y", pre="is_question()", definition="('cat'|'bird')=x 'is an' animal").def_var("x"),
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create_new=True
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).unpack()
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parser = LogicalOperatorParser()
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expression = "not a cat is a pet and not bird is an animal and not x > 5 and not dog is a pet"
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, expr_node.parts, "test")
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to_compile = 'not __C__00var0000is0a000var001__1005__C__'
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to_compile += ' and not __C__00var0000is0an0y__1006__C__'
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to_compile += ' and not x > 5'
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to_compile += ' and not __C__00var0000is0a000var001__1005_1__C__'
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ast_ = ast.parse(to_compile, "<source>", 'eval')
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expected_python_node = PythonNode(to_compile, ast_, expression)
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assert len(return_values) == 1
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ret = return_values[0]
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python_node = ret.body.body
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assert python_node == expected_python_node
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compare_with_test_object(python_node.objects, {
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"__C__00var0000is0a000var001__1005__C__": CC(is_a, x=cat, y=pet),
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"__C__00var0000is0an0y__1006__C__": CC(is_an, exclude_body=True, x=DoNotResolve("bird"), animal=animal),
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"__C__00var0000is0a000var001__1005_1__C__": CMV(is_a, x="dog", y="pet"),
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})
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def test_i_can_get_compiled_expr_from_mix(self):
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sheerka, context, animal, cat, dog, pet, is_a, is_an = self.init_test().with_concepts(
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Concept("animal"),
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Concept("a cat"),
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Concept("dog"),
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Concept("pet"),
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Concept("x is a y", pre="is_question()", body="isinstance(x, y)").def_var("x").def_var("y"),
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Concept("x is an y", pre="is_question()", definition="('cat'|'bird')=x 'is an' animal").def_var("x"),
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create_new=True
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).unpack()
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expression = "a cat is a pet and bird is an animal and x > 5 and dog is a pet"
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parser = LogicalOperatorParser()
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, expr_node.parts, "test")
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assert len(return_values) == 1
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ret = return_values[0]
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to_compile = '__C__00var0000is0a000var001__1005__C__ and __C__00var0000is0an0y__1006__C__ and x > 5 and __C__00var0000is0a000var001__1005_1__C__'
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ast_ = ast.parse(to_compile, "<source>", 'eval')
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expected_python_node = PythonNode(to_compile, ast_, expression)
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python_node = ret.body.body
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assert python_node == expected_python_node
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compare_with_test_object(python_node.objects, {
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"__C__00var0000is0a000var001__1005__C__": CC(is_a, x=cat, y=pet),
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"__C__00var0000is0an0y__1006__C__": CC(is_an, exclude_body=True, x=DoNotResolve("bird"), animal=animal),
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"__C__00var0000is0a000var001__1005_1__C__": CMV(is_a, x="dog", y="pet"),
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})
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def test_i_can_get_compiled_expr_when_multiple_choices(self):
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sheerka, context, *concepts = self.init_test().with_concepts(
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Concept("x is a y", pre="is_question()", body="isinstance(x, y)").def_var("x").def_var("y"),
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Concept("x is a y", pre="is_question()", body="isa(x, y)").def_var("x").def_var("y"),
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create_new=True
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).unpack()
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parser = LogicalOperatorParser()
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expression = "a is a b"
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expr_node = parser.parse(context, ParserInput(expression)).body.body
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return_values, _ = parser.compile_conjunctions(context, [expr_node], "test")
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|
|
|
assert len(return_values) == 2
|
|
|
|
ret = return_values[0]
|
|
compare_with_test_object(sheerka.objvalue(ret)[0].concept, CMV(concepts[0], x="a", y="b"))
|
|
|
|
ret = return_values[1]
|
|
compare_with_test_object(sheerka.objvalue(ret)[0].concept, CMV(concepts[1], x="a", y="b"))
|
|
|
|
def test_i_can_get_compiled_expr_from_mix_when_multiple_choices(self):
|
|
sheerka, context, *concepts = self.init_test().with_concepts(
|
|
Concept("animal"),
|
|
Concept("a cat"),
|
|
Concept("dog"),
|
|
Concept("pet"),
|
|
Concept("x is a y", pre="is_question()", body="isinstance(x, y)").def_var("x").def_var("y"),
|
|
Concept("x is a y", pre="is_question()", body="isa(x, y)").def_var("x").def_var("y"),
|
|
Concept("x is an y", pre="is_question()", definition="('cat'|'bird')=x 'is an' animal").def_var("x"),
|
|
create_new=True
|
|
).unpack()
|
|
|
|
expression = "a cat is a pet and bird is an animal and x > 5 and dog is a pet"
|
|
parser = LogicalOperatorParser()
|
|
expr_node = parser.parse(context, ParserInput(expression)).body.body
|
|
return_values, _ = parser.compile_conjunctions(context, expr_node.parts, "test")
|
|
|
|
assert len(return_values) == 4
|
|
trimmed_source = "a cat is a pet and bird is an animal and x > 5 and dog is a pet"
|
|
|
|
current_ret = return_values[0]
|
|
python_source = "__C__00var0000is0a000var001__1005__C__ and __C__00var0000is0an0y__1007__C__ and x > 5 and __C__00var0000is0a000var001__1005_1__C__"
|
|
ast_ = ast.parse(python_source, "<source>", 'eval')
|
|
resolved_expected = PythonNode(python_source, ast_, trimmed_source)
|
|
assert sheerka.objvalue(current_ret) == resolved_expected
|
|
|
|
current_ret = return_values[1]
|
|
assert sheerka.isinstance(current_ret, BuiltinConcepts.RETURN_VALUE)
|
|
python_source = "__C__00var0000is0a000var001__1005__C__ and __C__00var0000is0an0y__1007__C__ and x > 5 and __C__00var0000is0a000var001__1006__C__"
|
|
ast_ = ast.parse(python_source, "<source>", 'eval')
|
|
resolved_expected = PythonNode(python_source, ast_, trimmed_source)
|
|
assert sheerka.objvalue(current_ret) == resolved_expected
|
|
|
|
current_ret = return_values[2]
|
|
assert sheerka.isinstance(current_ret, BuiltinConcepts.RETURN_VALUE)
|
|
python_source = "__C__00var0000is0a000var001__1006__C__ and __C__00var0000is0an0y__1007__C__ and x > 5 and __C__00var0000is0a000var001__1005__C__"
|
|
ast_ = ast.parse(python_source, "<source>", 'eval')
|
|
resolved_expected = PythonNode(python_source, ast_, trimmed_source)
|
|
assert sheerka.objvalue(current_ret) == resolved_expected
|
|
|
|
current_ret = return_values[3]
|
|
python_source = "__C__00var0000is0a000var001__1006__C__ and __C__00var0000is0an0y__1007__C__ and x > 5 and __C__00var0000is0a000var001__1006_1__C__"
|
|
ast_ = ast.parse(python_source, "<source>", 'eval')
|
|
resolved_expected = PythonNode(python_source, ast_, trimmed_source)
|
|
assert sheerka.objvalue(current_ret) == resolved_expected
|
|
|
|
@pytest.mark.parametrize("expression, expected_conditions, test_obj", [
|
|
(
|
|
"__ret",
|
|
["#__x_00__|__name__|'__ret'"],
|
|
ReturnValueConcept("Test", True, None)
|
|
),
|
|
(
|
|
"__ret.status == True",
|
|
["#__x_00__|__name__|'__ret'", "#__x_00__|status|True"],
|
|
ReturnValueConcept("Test", True, None)
|
|
),
|
|
(
|
|
"__ret.status",
|
|
["#__x_00__|__name__|'__ret'", "#__x_00__|status|True"],
|
|
ReturnValueConcept("Test", True, None)
|
|
),
|
|
(
|
|
"__ret and __ret.status",
|
|
["#__x_00__|__name__|'__ret'", "#__x_00__|status|True"],
|
|
ReturnValueConcept("Test", True, None)
|
|
),
|
|
])
|
|
def test_i_can_get_rete_condition_from_python(self, expression, expected_conditions, test_obj):
|
|
sheerka, context, = self.init_test().unpack()
|
|
expected_full_condition = get_rete_conditions(*expected_conditions)
|
|
|
|
parser = LogicalOperatorParser()
|
|
expr_node = parser.parse(context, ParserInput(expression)).body.body
|
|
|
|
nodes = expr_node.parts if isinstance(expr_node, AndNode) else [expr_node]
|
|
_, rete_disjunctions = parser.compile_conjunctions(context, nodes, "test")
|
|
|
|
assert len(rete_disjunctions) == 1
|
|
assert rete_disjunctions == [expected_full_condition]
|
|
|
|
# check against a Rete network
|
|
network = ReteNetwork()
|
|
rule = Rule("test", expression, None)
|
|
rule.metadata.id = 9999
|
|
rule.metadata.is_compiled = True
|
|
rule.metadata.is_enabled = True
|
|
rule.rete_disjunctions = rete_disjunctions
|
|
network.add_rule(rule)
|
|
|
|
network.add_obj("__ret", test_obj)
|
|
matches = list(network.matches)
|
|
assert len(matches) > 0
|