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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.query.dnf;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import tools.refinery.store.query.literal.BooleanLiteral;
import tools.refinery.store.query.term.NodeVariable;
import tools.refinery.store.query.term.ParameterDirection;
import tools.refinery.store.query.term.Variable;
import tools.refinery.store.query.term.bool.BoolTerms;
import tools.refinery.store.query.view.KeyOnlyView;
import tools.refinery.store.query.view.SymbolView;
import tools.refinery.store.representation.Symbol;
import java.util.List;
import static org.hamcrest.MatcherAssert.assertThat;
import static tools.refinery.store.query.literal.Literals.assume;
import static tools.refinery.store.query.literal.Literals.not;
import static tools.refinery.store.query.tests.QueryMatchers.structurallyEqualTo;
class DnfBuilderLiteralEliminationTest {
private final Symbol<Boolean> friend = Symbol.of("friend", 2);
private final SymbolView<Boolean> friendView = new KeyOnlyView<>(friend);
private final NodeVariable p = Variable.of("p");
private final NodeVariable q = Variable.of("q");
private final Dnf trueDnf = Dnf.builder().parameter(p, ParameterDirection.IN).clause().build();
private final Dnf falseDnf = Dnf.builder().parameter(p).build();
@Test
void eliminateTrueTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(BooleanLiteral.TRUE, friendView.call(p, q))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateTrueAssumptionTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(assume(BoolTerms.constant(true)), friendView.call(p, q))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateFalseTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q))
.clause(friendView.call(q, p), BooleanLiteral.FALSE)
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@ParameterizedTest
@CsvSource(value = {
"false",
"null"
}, nullValues = "null")
void eliminateFalseAssumptionTest(Boolean value) {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q))
.clause(friendView.call(q, p), assume(BoolTerms.constant(value)))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysTrueTest() {
var actual = Dnf.builder()
.parameters(List.of(p, q), ParameterDirection.IN)
.clause(friendView.call(p, q))
.clause(BooleanLiteral.TRUE)
.build();
var expected = Dnf.builder().parameters(List.of(p, q), ParameterDirection.IN).clause().build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysFalseTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q), BooleanLiteral.FALSE)
.build();
var expected = Dnf.builder().parameters(p, q).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateTrueDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(trueDnf.call(q), friendView.call(p, q))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateFalseDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q))
.clause(friendView.call(q, p), falseDnf.call(q))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysTrueDnfTest() {
var actual = Dnf.builder()
.parameters(List.of(p, q), ParameterDirection.IN)
.clause(friendView.call(p, q))
.clause(trueDnf.call(q))
.build();
var expected = Dnf.builder().parameters(List.of(p, q), ParameterDirection.IN).clause().build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysFalseDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q), falseDnf.call(q))
.build();
var expected = Dnf.builder().parameters(p, q).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateNotFalseDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(not(falseDnf.call(q)), friendView.call(p, q))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void eliminateNotTrueDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q))
.clause(friendView.call(q, p), not(trueDnf.call(q)))
.build();
var expected = Dnf.builder().parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysNotFalseDnfTest() {
var actual = Dnf.builder()
.parameters(List.of(p, q), ParameterDirection.IN)
.clause(friendView.call(p, q))
.clause(not(falseDnf.call(q)))
.build();
var expected = Dnf.builder().parameters(List.of(p, q), ParameterDirection.IN).clause().build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void alwaysNotTrueDnfTest() {
var actual = Dnf.builder()
.parameters(p, q)
.clause(friendView.call(p, q), not(trueDnf.call(q)))
.build();
var expected = Dnf.builder().parameters(p, q).build();
assertThat(actual, structurallyEqualTo(expected));
}
@Test
void removeDuplicateTest() {
var actual = Dnf.of(builder -> builder.clause((p, q) -> List.of(
friendView.call(p, q),
friendView.call(p, q)
)));
var expected = Dnf.of(builder -> builder.clause((p, q) -> List.of(friendView.call(p, q))));
assertThat(actual, structurallyEqualTo(expected));
}
}
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