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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 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.view.AnySymbolView;
import tools.refinery.store.query.view.KeyOnlyView;
import tools.refinery.store.representation.Symbol;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static tools.refinery.store.query.literal.Literals.not;
class DnfToDefinitionStringTest {
private static final Symbol<Boolean> person = Symbol.of("person", 1);
private static final Symbol<Boolean> friend = Symbol.of("friend", 2);
private static final AnySymbolView personView = new KeyOnlyView<>(person);
private static final AnySymbolView friendView = new KeyOnlyView<>(friend);
private static final NodeVariable p = Variable.of("p");
private static final NodeVariable q = Variable.of("q");
@Test
void noClausesTest() {
var dnf = Dnf.builder("Example").parameter(p).build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
<no clauses>.
"""));
}
@Test
void noParametersTest() {
var dnf = Dnf.builder("Example").build();
assertThat(dnf.toDefinitionString(), is("""
pred Example() <->
<no clauses>.
"""));
}
@Test
void emptyClauseTest() {
var dnf = Dnf.builder("Example").parameter(p, ParameterDirection.IN).clause().build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(@In p) <->
<empty>.
"""));
}
@Test
void relationViewPositiveTest() {
var dnf = Dnf.builder("Example").parameter(p).clause(friendView.call(p, q)).build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
@RelationView("key") friend(p, q).
"""));
}
@Test
void relationViewNegativeTest() {
var dnf = Dnf.builder("Example")
.parameter(p, ParameterDirection.IN)
.clause(not(friendView.call(p, q)))
.build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(@In p) <->
!(@RelationView("key") friend(p, q)).
"""));
}
@Test
void relationViewTransitiveTest() {
var dnf = Dnf.builder("Example").parameter(p).clause(friendView.callTransitive(p, q)).build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
@RelationView("key") friend+(p, q).
"""));
}
@Test
void multipleParametersTest() {
var dnf = Dnf.builder("Example").parameters(p, q).clause(friendView.call(p, q)).build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p, q) <->
@RelationView("key") friend(p, q).
"""));
}
@Test
void multipleLiteralsTest() {
var dnf = Dnf.builder("Example")
.parameter(p)
.clause(
personView.call(p),
personView.call(q),
friendView.call(p, q)
)
.build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
@RelationView("key") person(p),
@RelationView("key") person(q),
@RelationView("key") friend(p, q).
"""));
}
@Test
void multipleClausesTest() {
var dnf = Dnf.builder("Example")
.parameter(p)
.clause(friendView.call(p, q))
.clause(friendView.call(q, p))
.build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
@RelationView("key") friend(p, q)
;
@RelationView("key") friend(q, p).
"""));
}
@Test
void dnfTest() {
var r = Variable.of("r");
var s = Variable.of("s");
var called = Dnf.builder("Called").parameters(r, s).clause(friendView.call(r, s)).build();
var dnf = Dnf.builder("Example")
.parameter(p)
.clause(
personView.call(p),
personView.call(q),
not(called.call(p, q))
)
.build();
assertThat(dnf.toDefinitionString(), is("""
pred Example(p) <->
@RelationView("key") person(p),
@RelationView("key") person(q),
!(@Dnf Called(p, q)).
"""));
}
}
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