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/******************************************************************************
* Top contributors (to current version):
* Abdalrhman Mohamed, Hans-Joerg Schurr, Aina Niemetz
*
* 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.
* ****************************************************************************
*
* Black box testing of the guards of the C++ API functions.
*/
#include <gtest/gtest.h>
#include "test_api.h"
namespace cvc5::internal {
namespace test {
class TestApiBlackProof : public TestApi
{
protected:
Proof createProof()
{
d_solver->setOption("produce-proofs", "true");
Sort uSort = d_tm.mkUninterpretedSort("u");
Sort intSort = d_tm.getIntegerSort();
Sort boolSort = d_tm.getBooleanSort();
Sort uToIntSort = d_tm.mkFunctionSort({uSort}, intSort);
Sort intPredSort = d_tm.mkFunctionSort({intSort}, boolSort);
std::vector<Proof> proof;
Term x = d_tm.mkConst(uSort, "x");
Term y = d_tm.mkConst(uSort, "y");
Term f = d_tm.mkConst(uToIntSort, "f");
Term p = d_tm.mkConst(intPredSort, "p");
Term zero = d_tm.mkInteger(0);
Term one = d_tm.mkInteger(1);
Term f_x = d_tm.mkTerm(Kind::APPLY_UF, {f, x});
Term f_y = d_tm.mkTerm(Kind::APPLY_UF, {f, y});
Term sum = d_tm.mkTerm(Kind::ADD, {f_x, f_y});
Term p_0 = d_tm.mkTerm(Kind::APPLY_UF, {p, zero});
Term p_f_y = d_tm.mkTerm(Kind::APPLY_UF, {p, f_y});
d_solver->assertFormula(d_tm.mkTerm(Kind::GT, {zero, f_x}));
d_solver->assertFormula(d_tm.mkTerm(Kind::GT, {zero, f_y}));
d_solver->assertFormula(d_tm.mkTerm(Kind::GT, {sum, one}));
d_solver->assertFormula(p_0);
d_solver->assertFormula(p_f_y.notTerm());
d_solver->checkSat();
return d_solver->getProof().front();
}
Proof createRewriteProof()
{
d_solver->setOption("produce-proofs", "true");
d_solver->setOption("proof-granularity", "dsl-rewrite");
Sort intSort = d_tm.getIntegerSort();
Term x = d_tm.mkConst(intSort, "x");
Term zero = d_tm.mkInteger(0);
Term geq = d_tm.mkTerm(Kind::GEQ, {x, zero});
Term leq = d_tm.mkTerm(Kind::LEQ, {zero, x});
d_solver->assertFormula(d_tm.mkTerm(Kind::DISTINCT, {geq, leq}));
d_solver->checkSat();
return d_solver->getProof().front();
}
};
TEST_F(TestApiBlackProof, nullProof)
{
Proof proof;
ASSERT_EQ(proof.getRule(), ProofRule::UNKNOWN);
ASSERT_EQ(std::hash<cvc5::ProofRule>()(ProofRule::UNKNOWN),
static_cast<size_t>(ProofRule::UNKNOWN));
ASSERT_TRUE(proof.getResult().isNull());
ASSERT_TRUE(proof.getChildren().empty());
ASSERT_TRUE(proof.getArguments().empty());
}
TEST_F(TestApiBlackProof, getRule)
{
Proof proof = createProof();
ASSERT_EQ(proof.getRule(), ProofRule::SCOPE);
}
TEST_F(TestApiBlackProof, getRewriteRule)
{
Proof proof = createRewriteProof();
ASSERT_THROW(proof.getRewriteRule(), CVC5ApiException);
ProofRule rule;
std::vector<Proof> stack;
stack.push_back(proof);
do
{
proof = stack.back();
stack.pop_back();
rule = proof.getRule();
std::vector<Proof> children = proof.getChildren();
stack.insert(stack.cend(), children.cbegin(), children.cend());
} while (rule != ProofRule::DSL_REWRITE);
ASSERT_NO_THROW(proof.getRewriteRule());
}
TEST_F(TestApiBlackProof, getResult)
{
Proof proof = createProof();
ASSERT_NO_THROW(proof.getResult());
}
TEST_F(TestApiBlackProof, getChildren)
{
Proof proof = createProof();
std::vector<Proof> children;
ASSERT_NO_THROW(children = proof.getChildren());
ASSERT_FALSE(children.empty());
}
TEST_F(TestApiBlackProof, getArguments)
{
Proof proof = createProof();
ASSERT_NO_THROW(proof.getArguments());
}
TEST_F(TestApiBlackProof, equalhash)
{
Proof x = createProof();
Proof y = x.getChildren()[0];
Proof z;
ASSERT_TRUE(x == x);
ASSERT_FALSE(x != x);
ASSERT_FALSE(x == y);
ASSERT_TRUE(x != y);
ASSERT_FALSE(x == z);
ASSERT_TRUE(x != z);
ASSERT_TRUE(std::hash<Proof>()(x) == std::hash<Proof>()(x));
(void)std::hash<Proof>{}(Proof());
ASSERT_FALSE(std::hash<Proof>()(x) == std::hash<Proof>()(y));
}
} // namespace test
} // namespace cvc5::internal
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