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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andres Noetzli |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* Unit tests for the string utils |
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*/ |
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#include <unordered_set> |
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#include <vector> |
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#include "expr/node.h" |
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#include "test_node.h" |
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#include "theory/strings/theory_strings_utils.h" |
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namespace cvc5 { |
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using namespace kind; |
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using namespace theory; |
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using namespace theory::strings; |
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namespace test { |
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class TestTheoryWhiteStringsUtils : public TestNode |
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{ |
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}; |
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TEST_F(TestTheoryWhiteStringsUtils, collect_empty_eqs) |
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{ |
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TypeNode strType = d_nodeManager->stringType(); |
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Node empty = d_nodeManager->mkConst(String("")); |
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Node a = d_nodeManager->mkConst(::cvc5::String("A")); |
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Node x = d_nodeManager->mkVar("x", strType); |
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Node emptyEqX = empty.eqNode(x); |
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Node emptyEqA = a.eqNode(empty); |
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Node xEqA = x.eqNode(a); |
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std::vector<Node> emptyNodes; |
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bool allEmptyEqs; |
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std::unordered_set<Node> expected = {a, x}; |
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std::tie(allEmptyEqs, emptyNodes) = |
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utils::collectEmptyEqs(d_nodeManager->mkNode(AND, emptyEqX, emptyEqA)); |
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ASSERT_TRUE(allEmptyEqs); |
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ASSERT_EQ(std::unordered_set<Node>(emptyNodes.begin(), emptyNodes.end()), |
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expected); |
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std::tie(allEmptyEqs, emptyNodes) = utils::collectEmptyEqs( |
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d_nodeManager->mkNode(AND, emptyEqX, xEqA, emptyEqA)); |
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ASSERT_FALSE(allEmptyEqs); |
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ASSERT_EQ(std::unordered_set<Node>(emptyNodes.begin(), emptyNodes.end()), |
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expected); |
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} |
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} // namespace test |
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} // namespace cvc5 |