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/*
* SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.logic.literal;
import org.junit.jupiter.api.Test;
import tools.refinery.logic.Constraint;
import tools.refinery.logic.InvalidQueryException;
import tools.refinery.logic.dnf.Dnf;
import tools.refinery.logic.dnf.InvalidClauseException;
import tools.refinery.logic.term.*;
import java.util.List;
import java.util.Set;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;
import static org.junit.jupiter.api.Assertions.assertAll;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static tools.refinery.logic.literal.Literals.not;
import static tools.refinery.logic.term.int_.IntTerms.INT_SUM;
import static tools.refinery.logic.term.int_.IntTerms.constant;
class AggregationLiteralTest {
private static final NodeVariable p = Variable.of("p");
private static final DataVariable<Integer> x = Variable.of("x", Integer.class);
private static final DataVariable<Integer> y = Variable.of("y", Integer.class);
private static final DataVariable<Integer> z = Variable.of("z", Integer.class);
private static final Constraint fakeConstraint = new Constraint() {
@Override
public String name() {
return getClass().getName();
}
@Override
public List<Parameter> getParameters() {
return List.of(
new Parameter(null, ParameterDirection.OUT),
new Parameter(Integer.class, ParameterDirection.OUT)
);
}
};
@Test
void parameterDirectionTest() {
var literal = x.assign(fakeConstraint.aggregateBy(y, INT_SUM, p, y));
assertAll(
() -> assertThat(literal.getOutputVariables(), containsInAnyOrder(x)),
() -> assertThat(literal.getInputVariables(Set.of()), empty()),
() -> assertThat(literal.getInputVariables(Set.of(p)), containsInAnyOrder(p)),
() -> assertThat(literal.getPrivateVariables(Set.of()), containsInAnyOrder(p, y)),
() -> assertThat(literal.getPrivateVariables(Set.of(p)), containsInAnyOrder(y))
);
}
@Test
void missingAggregationVariableTest() {
var aggregation = fakeConstraint.aggregateBy(y, INT_SUM, p, z);
assertThrows(InvalidQueryException.class, () -> x.assign(aggregation));
}
@Test
void circularAggregationVariableTest() {
var aggregation = fakeConstraint.aggregateBy(x, INT_SUM, p, x);
assertThrows(InvalidQueryException.class, () -> x.assign(aggregation));
}
@Test
void unboundTwiceVariableTest() {
var builder = Dnf.builder()
.clause(
not(fakeConstraint.call(p, y)),
x.assign(fakeConstraint.aggregateBy(y, INT_SUM, p, y))
);
assertThrows(InvalidClauseException.class, builder::build);
}
@Test
void unboundBoundVariableTest() {
var builder = Dnf.builder()
.clause(
y.assign(constant(27)),
x.assign(fakeConstraint.aggregateBy(y, INT_SUM, p, y))
);
assertThrows(InvalidClauseException.class, builder::build);
}
}
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