/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.metadata;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.opengis.metadata.Identifier;
import org.opengis.metadata.citation.Citation;
import org.opengis.util.InternationalString;
import org.geotools.util.SimpleInternationalString;
import org.geotools.metadata.iso.citation.CitationImpl;
import org.geotools.metadata.iso.citation.Citations;
import org.junit.*;
import static org.junit.Assert.*;
/**
* Tests the {@link PropertyAccessor} class.
*
*
*
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux
*/
public final class PropertyAccessorTest {
/**
* Creates a property accessor for the given citation.
*/
private static PropertyAccessor createPropertyAccessor(final Citation citation) {
final Class<?> implementation = citation.getClass();
final Class<?> type = PropertyAccessor.getType(implementation, "org.opengis.metadata");
assertNotNull(type);
return new PropertyAccessor(implementation, type);
}
/**
* Tests the constructor.
*/
@Test
public void testConstructor() {
final Citation citation = Citations.EPSG;
PropertyAccessor accessor;
assertNull("No dummy interface expected.",
PropertyAccessor.getType(citation.getClass(), "org.opengis.dummy"));
accessor = createPropertyAccessor(citation);
assertTrue("Count of 'get' methods.", accessor.count() >= 13);
}
/**
* Tests the {@code indexOf} and {code name} methods.
*/
@Test
public void testName() {
final Citation citation = Citations.EPSG;
final PropertyAccessor accessor = createPropertyAccessor(citation);
assertEquals("Non-existent property", -1, accessor.indexOf("dummy"));
assertEquals("getTitle() property", "title", accessor.name(accessor.indexOf("title")));
assertEquals("getTitle() property", "title", accessor.name(accessor.indexOf("TITLE")));
assertEquals("getISBN() property", "ISBN", accessor.name(accessor.indexOf("ISBN")));
assertNull(accessor.name(-1));
}
/**
* Tests the get method.
*/
@Test
public void testGet() {
Citation citation = Citations.EPSG;
final PropertyAccessor accessor = createPropertyAccessor(citation);
final int index = accessor.indexOf("identifiers");
assertTrue(index >= 0);
final Object identifiers = accessor.get(index, citation);
assertNotNull(identifiers);
assertTrue(containsEPSG(identifiers));
}
/**
* Returns {@code true} if the specified identifiers contains the {@code "EPSG"} code.
*/
static boolean containsEPSG(final Object identifiers) {
assertTrue(identifiers instanceof Collection);
@SuppressWarnings("unchecked")
final Collection<Identifier> collection = (Collection) identifiers;
for (final Identifier id : collection) {
if (id.getCode().equals("EPSG")) {
return true;
}
}
return false;
}
/**
* Tests the set method.
*/
@Test
public void testSet() {
Citation citation = new CitationImpl();
final PropertyAccessor accessor = createPropertyAccessor(citation);
// Tries with ISBN, which expect a String.
Object value = "Random number";
int index = accessor.indexOf("ISBN");
assertTrue(index >= 0);
assertNull(accessor.set(index, citation, value));
assertSame(value, accessor.get(index, citation));
assertSame(value, citation.getISBN());
// Tries with the title. Automatic conversion from String to InternationalString expected.
index = accessor.indexOf("title");
assertTrue(index >= 0);
assertNull(accessor.set(index, citation, "A random title"));
value = accessor.get(index, citation);
assertTrue(value instanceof InternationalString);
assertEquals("A random title", value.toString());
assertSame(value, citation.getTitle());
// Tries with an element to be added in a collection.
index = accessor.indexOf("alternateTitle");
assertTrue(index >= 0);
value = accessor.get(index, citation);
assertTrue(value instanceof Collection);
assertTrue(((Collection) value).isEmpty());
value = accessor.set(index, citation, "An other title");
assertTrue(value instanceof Collection);
assertEquals(1, ((Collection) value).size());
value = accessor.set(index, citation, "Yet an other title");
assertTrue(value instanceof Collection);
assertEquals(2, ((Collection) value).size());
}
/**
* Tests the shallow equals and copy methods.
*/
@Test
public void testEquals() {
Citation citation = Citations.EPSG;
final PropertyAccessor accessor = createPropertyAccessor(citation);
assertFalse(accessor.shallowEquals(citation, Citations.GEOTIFF, true ));
assertFalse(accessor.shallowEquals(citation, Citations.GEOTIFF, false));
assertTrue (accessor.shallowEquals(citation, Citations.EPSG, false));
citation = new CitationImpl();
assertTrue (accessor.shallowCopy (Citations.EPSG, citation, true ));
assertFalse(accessor.shallowEquals(citation, Citations.GEOTIFF, true ));
assertFalse(accessor.shallowEquals(citation, Citations.GEOTIFF, false));
assertTrue (accessor.shallowEquals(citation, Citations.EPSG, false));
final int index = accessor.indexOf("identifiers");
final Object source = accessor.get(index, Citations.EPSG);
final Object target = accessor.get(index, citation);
assertNotNull(source);
assertNotNull(target);
assertNotSame(source, target);
assertEquals (source, target);
assertTrue(containsEPSG(target));
assertSame(target, accessor.set(index, citation, null));
final Object value = accessor.get(index, citation);
assertNotNull(value);
assertTrue(((Collection) value).isEmpty());
try {
accessor.shallowCopy(citation, Citations.EPSG, true);
fail("Citations.EPSG should be unmodifiable.");
} catch (UnmodifiableMetadataException e) {
// This is the expected exception.
}
}
/**
* Tests the hash code computation.
*/
@Test
public void testHashCode() {
final CitationImpl citation = new CitationImpl();
final PropertyAccessor accessor = createPropertyAccessor(citation);
int hashCode = accessor.hashCode(citation);
assertEquals("Empty metadata.", 0, hashCode);
final String ISBN = "Dummy ISBN";
citation.setISBN(ISBN);
hashCode = accessor.hashCode(citation);
assertEquals("Metadata with a single String value.", ISBN.hashCode(), hashCode);
final Set<Object> set = new HashSet<Object>();
assertEquals("By Set.hashCode() contract.", 0, set.hashCode());
assertTrue(set.add(ISBN));
assertEquals("Expected Metadata.hashCode() == Set.hashCode().", set.hashCode(), hashCode);
final InternationalString title = new SimpleInternationalString("Dummy title");
citation.setTitle(title);
hashCode = accessor.hashCode(citation);
assertEquals("Metadata with two values.", ISBN.hashCode() + title.hashCode(), hashCode);
assertTrue(set.add(title));
assertEquals("Expected Metadata.hashCode() == Set.hashCode().", set.hashCode(), hashCode);
assertEquals("CitationsImpl.hashCode() should delegate.", hashCode, citation.hashCode());
final Collection<Object> values = citation.asMap().values();
assertEquals(hashCode, new HashSet<Object>(values).hashCode());
assertTrue(values.containsAll(set));
assertTrue(set.containsAll(values));
}
}