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###############################################################################
# Top contributors (to current version):
# Yoni Zohar, Makai Mann, Mudathir Mohamed
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
# in the top-level source directory and their institutional affiliations.
# All rights reserved. See the file COPYING in the top-level source
# directory for licensing information.
# #############################################################################
#
# Translated from test/unit/api/grammar_black.h
##
import pytest
import pycvc5
from pycvc5 import Term
@pytest.fixture
def solver():
return pycvc5.Solver()
def test_add_rule(solver):
boolean = solver.getBooleanSort()
integer = solver.getIntegerSort()
null_term = Term(solver)
start = solver.mkVar(boolean)
nts = solver.mkVar(boolean)
# expecting no error
g = solver.mkSygusGrammar([], [start])
g.addRule(start, solver.mkBoolean(False))
# expecting errors
with pytest.raises(RuntimeError):
g.addRule(null_term, solver.mkBoolean(False))
with pytest.raises(RuntimeError):
g.addRule(start, null_term)
with pytest.raises(RuntimeError):
g.addRule(nts, solver.mkBoolean(False))
with pytest.raises(RuntimeError):
g.addRule(start, solver.mkInteger(0))
with pytest.raises(RuntimeError):
g.addRule(start, nts)
# expecting no errors
solver.synthFun("f", {}, boolean, g)
# expecting an error
with pytest.raises(RuntimeError):
g.addRule(start, solver.mkBoolean(False))
def test_add_rules(solver):
boolean = solver.getBooleanSort()
integer = solver.getIntegerSort()
null_term = Term(solver)
start = solver.mkVar(boolean)
nts = solver.mkVar(boolean)
g = solver.mkSygusGrammar([], [start])
g.addRules(start, {solver.mkBoolean(False)})
#Expecting errors
with pytest.raises(RuntimeError):
g.addRules(null_term, [solver.mkBoolean(False)])
with pytest.raises(RuntimeError):
g.addRules(start, [null_term])
with pytest.raises(RuntimeError):
g.addRules(nts, [solver.mkBoolean(False)])
with pytest.raises(RuntimeError):
g.addRules(start, [solver.mkInteger(0)])
with pytest.raises(RuntimeError):
g.addRules(start, [nts])
#Expecting no errors
solver.synthFun("f", {}, boolean, g)
#Expecting an error
with pytest.raises(RuntimeError):
g.addRules(start, solver.mkBoolean(False))
def test_add_any_constant(solver):
boolean = solver.getBooleanSort()
null_term = Term(solver)
start = solver.mkVar(boolean)
nts = solver.mkVar(boolean)
g = solver.mkSygusGrammar({}, {start})
g.addAnyConstant(start)
g.addAnyConstant(start)
with pytest.raises(RuntimeError):
g.addAnyConstant(null_term)
with pytest.raises(RuntimeError):
g.addAnyConstant(nts)
solver.synthFun("f", {}, boolean, g)
with pytest.raises(RuntimeError):
g.addAnyConstant(start)
def test_add_any_variable(solver):
boolean = solver.getBooleanSort()
null_term = Term(solver)
x = solver.mkVar(boolean)
start = solver.mkVar(boolean)
nts = solver.mkVar(boolean)
g1 = solver.mkSygusGrammar({x}, {start})
g2 = solver.mkSygusGrammar({}, {start})
g1.addAnyVariable(start)
g1.addAnyVariable(start)
g2.addAnyVariable(start)
with pytest.raises(RuntimeError):
g1.addAnyVariable(null_term)
with pytest.raises(RuntimeError):
g1.addAnyVariable(nts)
solver.synthFun("f", {}, boolean, g1)
with pytest.raises(RuntimeError):
g1.addAnyVariable(start)
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