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###############################################################################
# Top contributors (to current version):
# Yoni Zohar, Aina Niemetz, Andrew Reynolds
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2025 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.
# #############################################################################
#
# Unit tests for result API.
#
# Obtained by translating test/unit/api/result_black.cpp
##
import pytest
import cvc5
from cvc5 import Result
from cvc5 import Kind, UnknownExplanation
@pytest.fixture
def tm():
return cvc5.TermManager()
@pytest.fixture
def solver(tm):
return cvc5.Solver(tm)
def test_is_null(tm, solver):
res_null = Result()
assert res_null.isNull()
assert not res_null.isSat()
assert not res_null.isUnsat()
assert not res_null.isUnknown()
u_sort = tm.mkUninterpretedSort("u")
x = tm.mkConst(u_sort, "x")
solver.assertFormula(x.eqTerm(x))
res = solver.checkSat()
assert not res.isNull()
def test_eq(tm, solver):
u_sort = tm.mkUninterpretedSort("u")
x = tm.mkConst(u_sort, "x")
solver.assertFormula(x.eqTerm(x))
res2 = solver.checkSat()
res3 = solver.checkSat()
res = Result()
assert res != res2
res = res2
assert res == res2
assert res3 == res2
assert str(res) == "sat"
def test_is_sat(tm, solver):
u_sort = tm.mkUninterpretedSort("u")
x = tm.mkConst(u_sort, "x")
solver.assertFormula(x.eqTerm(x))
res = solver.checkSat()
assert res.isSat()
assert not res.isUnknown()
def test_is_unsat(tm, solver):
u_sort = tm.mkUninterpretedSort("u")
x = tm.mkConst(u_sort, "x")
solver.assertFormula(x.eqTerm(x).notTerm())
res = solver.checkSat()
assert res.isUnsat()
assert not res.isUnknown()
def test_is_sat_unknown(tm, solver):
solver.setLogic("QF_NIA")
solver.setOption("incremental", "false")
solver.setOption("solve-real-as-int", "true")
real_sort = tm.getRealSort()
x = tm.mkConst(real_sort, "x")
solver.assertFormula(tm.mkTerm(Kind.LT, tm.mkReal("0.0"), x))
solver.assertFormula(tm.mkTerm(Kind.LT, x, tm.mkReal("1.0")))
res = solver.checkSat()
assert not res.isSat()
assert res.isUnknown()
ue = res.getUnknownExplanation()
assert ue == UnknownExplanation.INCOMPLETE
assert str(ue) == "UnknownExplanation.INCOMPLETE"
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