TupleExprsTest.java
/*******************************************************************************
* Copyright (c) 2019 Eclipse RDF4J contributors.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.query.algebra.helpers;
import static org.assertj.core.api.Assertions.assertThat;
import static org.eclipse.rdf4j.query.algebra.helpers.TupleExprs.isFilterExistsFunction;
import org.eclipse.rdf4j.model.ValueFactory;
import org.eclipse.rdf4j.model.impl.SimpleValueFactory;
import org.eclipse.rdf4j.query.algebra.Compare;
import org.eclipse.rdf4j.query.algebra.Exists;
import org.eclipse.rdf4j.query.algebra.Filter;
import org.eclipse.rdf4j.query.algebra.Not;
import org.eclipse.rdf4j.query.algebra.StatementPattern;
import org.eclipse.rdf4j.query.algebra.TupleExpr;
import org.eclipse.rdf4j.query.algebra.Var;
import org.junit.jupiter.api.Test;
public class TupleExprsTest {
private final ValueFactory f = SimpleValueFactory.getInstance();
@Test
public void isFilterExistsFunctionOnEmptyFilter() {
TupleExpr expr = new Filter();
assertThat(isFilterExistsFunction(expr)).isFalse();
}
@Test
public void isFilterExistsFunctionOnNormalFilter() {
Filter expr = new Filter();
expr.setArg(new StatementPattern(new Var("s"), new Var("p"), new Var("o")));
expr.setCondition(new Compare(new Var("x", f.createBNode()), new Var("y", f.createBNode())));
assertThat(isFilterExistsFunction(expr)).isFalse();
}
@Test
public void isFilterExistsFunctionOnNormalNot() {
Filter expr = new Filter();
expr.setArg(new StatementPattern(new Var("s"), new Var("p"), new Var("o")));
expr.setCondition(new Not(new Compare(new Var("x", f.createBNode()), new Var("y", f.createBNode()))));
assertThat(isFilterExistsFunction(expr)).isFalse();
}
@Test
public void isFilterExistsFunctionOnExists() {
Filter expr = new Filter();
expr.setArg(new StatementPattern(new Var("s"), new Var("p"), new Var("o")));
expr.setCondition(new Exists(new StatementPattern(new Var("s"), new Var("p"), new Var("o"))));
assertThat(isFilterExistsFunction(expr)).isTrue();
}
@Test
public void isFilterExistsFunctionOnNotExist() {
Filter expr = new Filter();
expr.setArg(new StatementPattern(new Var("s"), new Var("p"), new Var("o")));
expr.setCondition(new Not(new Exists(new StatementPattern(new Var("s"), new Var("p"), new Var("o")))));
assertThat(isFilterExistsFunction(expr)).isTrue();
}
}