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IdentifierGeneratorTest.java
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IdentifierGeneratorTest.java
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/**
* Copyright (C) 2019 Czech Technical University in Prague
* <p>
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
* version.
* <p>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.ontodriver.owlapi.util;
import cz.cvut.kbss.ontodriver.exception.IdentifierGenerationException;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.semanticweb.owlapi.model.IRI;
import org.semanticweb.owlapi.model.OWLOntology;
import java.lang.reflect.Field;
import java.net.URI;
import java.util.HashSet;
import java.util.Set;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.*;
class IdentifierGeneratorTest {
@Mock
private OWLOntology ontologyMock;
private IdentifierGenerator generator;
@BeforeEach
void setUp() {
MockitoAnnotations.initMocks(this);
this.generator = new IdentifierGenerator(ontologyMock);
}
@Test
void generatesUniqueIdentifier() {
final URI baseUri = URI.create("http://baseUri/");
when(ontologyMock.containsIndividualInSignature(any(IRI.class))).thenReturn(false);
final Set<URI> results = new HashSet<>();
int tries = 100;
for (int i = 0; i < tries; i++) {
results.add(generator.generateIdentifier(baseUri));
}
results.forEach(uri -> assertTrue(uri.toString().contains(baseUri.toString())));
assertEquals(tries, results.size()); // All tries lead to unique URI
}
@Test
void throwsExceptionWhenUnableToGenerateUriWithinThreshold() throws Exception {
final URI baseUri = URI.create("http://baseUri/");
final int threshold = extractThreshold();
when(ontologyMock.containsIndividualInSignature(any(IRI.class))).thenReturn(true);
try {
assertThrows(IdentifierGenerationException.class, () -> generator.generateIdentifier(baseUri));
} finally {
verify(ontologyMock, times(threshold)).containsIndividualInSignature(any(IRI.class));
}
}
private int extractThreshold() throws Exception {
final Field thresholdField = IdentifierGenerator.class.getDeclaredField("GENERATION_THRESHOLD");
thresholdField.setAccessible(true);
return (int) thresholdField.get(null);
}
}