endorsed/src/org.apache.sis.metadata/test/org/apache/sis/metadata/iso/DefaultMetadataTest.java - sis - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package org.apache.sis.metadata.iso;

 import java.util.Date;
 import java.util.Locale;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.Collection;
 import java.util.Collections;
 import java.net.URISyntaxException;
 import jakarta.xml.bind.JAXBException;
 import org.opengis.metadata.citation.Citation;
 import org.opengis.metadata.citation.DateType;
 import org.opengis.metadata.maintenance.ScopeCode;
 import org.apache.sis.xml.Namespaces;
 import org.apache.sis.util.SimpleInternationalString;
 import org.apache.sis.metadata.iso.citation.DefaultCitation;
 import org.apache.sis.metadata.iso.citation.DefaultCitationDate;

 // Test dependencies
 import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.*;
 import org.apache.sis.xml.test.TestCase;
 import static org.apache.sis.test.TestUtilities.date;
 import static org.apache.sis.test.TestUtilities.getSingleton;
 import static org.apache.sis.metadata.Assertions.assertTitleEquals;

 // Specific to the geoapi-3.1 and geoapi-4.0 branches:
 import org.opengis.metadata.MetadataScope;


 /**
  * Tests {@link DefaultMetadata}, without Coordinate Reference System (CRS) information.
  *
  * <p><b>Note:</b> a metadata object with CRS information is tested by a different
  * {@code org.apache.sis.test.integration.DefaultMetadataTest} class in the
  * {@code org.apache.sis.referencing} module.</p>
  *
  * @author  Cédric Briançon (Geomatys)
  * @author  Martin Desruisseaux (Geomatys)
  * @author  Cullen Rombach (Image Matters)
  */
 public final class DefaultMetadataTest extends TestCase {
     /**
      * Creates a new test case.
      */
     public DefaultMetadataTest() {
     }

     /**
      * Tests unmarshalling of a metadata having a collection that contains no element.
      * This was used to cause a {@code NullPointerException} prior SIS-139 fix.
      *
      * @throws JAXBException if an error occurred during the during unmarshalling processes.
      *
      * @see <a href="https://issues.apache.org/jira/browse/SIS-139">SIS-139</a>
      */
     @Test
     public void testEmptyCollection() throws JAXBException {
         final DefaultMetadata metadata = unmarshal(DefaultMetadata.class,
                 "<mdb:MD_Metadata xmlns:mdb=\"" + Namespaces.MDB + "\">\n" +
                 "  <mdb:contact/>\n" +
                 "</mdb:MD_Metadata>");
         /*
          * Verify metadata property.
          */
         assertTrue(metadata.getContacts().isEmpty());
     }

     /**
      * Tests {@link DefaultMetadata#getFileIdentifier()} and {@link DefaultMetadata#setFileIdentifier(String)}
      * legacy methods. Those methods should delegate to newer methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testFileIdentifier() {
         final var metadata = new DefaultMetadata();
         assertNull(metadata.getFileIdentifier());
         metadata.setFileIdentifier("Apache SIS/Metadata test");
         assertEquals("Apache SIS/Metadata test", metadata.getMetadataIdentifier().getCode());
         assertEquals("Apache SIS/Metadata test", metadata.getFileIdentifier());
     }

     /**
      * Tests {@link DefaultMetadata#getLanguage()}, {@link DefaultMetadata#setLanguage(Locale)}
      * and {@link DefaultMetadata#getLocales()} legacy methods.
      * Those methods should delegate to newer methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testLocales() {
         final var metadata = new DefaultMetadata();
         assertNull(metadata.getLanguage());
         /*
          * Set the default language, which shall be the first entry in the collection.
          * The "other locales" property shall be unmodified by the "language" one.
          */
         metadata.setLanguage(Locale.JAPANESE);
         assertLanguagesEquals(metadata, Locale.JAPANESE);
         /*
          * Add other languages. They should appear as additional entries after the first one.
          * The "language" property shall be unmodified by changes in the "other locales" one.
          */
         Collections.addAll(metadata.getLocales(), Locale.FRENCH, Locale.ENGLISH);
         assertLanguagesEquals(metadata, Locale.JAPANESE, Locale.FRENCH, Locale.ENGLISH);
         /*
          * Ensure that the "locales" list is modifiable, since JAXB writes directly in it.
          */
         metadata.getLocales().clear();
         assertLanguagesEquals(metadata, Locale.JAPANESE);
         final Collection<Locale> locales = metadata.getLocales();
         assertTrue(locales.add(Locale.KOREAN));
         assertTrue(locales.add(Locale.ENGLISH));
         assertLanguagesEquals(metadata, Locale.JAPANESE, Locale.KOREAN, Locale.ENGLISH);
         /*
          * Changing again the default language shall not change the other locales.
          */
         metadata.setLanguage(Locale.GERMAN);
         assertLanguagesEquals(metadata, Locale.GERMAN, Locale.KOREAN, Locale.ENGLISH);
     }

     /**
      * Compares the {@link DefaultMetadata#getLanguages()}, {@link DefaultMetadata#getLanguage()} and
      * {@link DefaultMetadata#getLocales()} values against the expected array.
      */
     @SuppressWarnings("deprecation")
     private static void assertLanguagesEquals(final DefaultMetadata metadata, final Locale... expected) {
         assertArrayEquals(expected,    metadata.getLocalesAndCharsets().keySet().toArray());
         assertEquals     (expected[0], metadata.getLanguage());
         assertArrayEquals(Arrays.copyOfRange(expected, 1, expected.length), metadata.getLocales().toArray());
     }

     /**
      * Tests {@link DefaultMetadata#getParentIdentifier()} and {@link DefaultMetadata#setParentIdentifier(String)}
      * methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testParentIdentifier() {
         final var metadata = new DefaultMetadata();
         assertNull(metadata.getParentIdentifier());
         metadata.setParentIdentifier("ParentID");
         assertEquals("ParentID", metadata.getParentIdentifier());

         var c = assertInstanceOf(DefaultCitation.class, metadata.getParentMetadata());
         assertTitleEquals("ParentID", c, "parentMetadata");
         c.setTitle(new SimpleInternationalString("New parent"));
         assertEquals("New parent", metadata.getParentIdentifier());
     }

     /**
      * Tests {@link DefaultMetadata#getHierarchyLevels()}, {@link DefaultMetadata#getHierarchyLevelNames()},
      * {@link DefaultMetadata#setHierarchyLevels(Collection)} and {@link DefaultMetadata#setHierarchyLevelNames(Collection)}
      * methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testHierarchyLevels() {
         final var names    = new String[] {"Bridges", "Golden Gate Bridge"};
         final var levels   = new ScopeCode[] {ScopeCode.FEATURE_TYPE, ScopeCode.FEATURE};
         final var metadata = new DefaultMetadata();
         assertTrue(metadata.getHierarchyLevelNames().isEmpty());
         assertTrue(metadata.getHierarchyLevels().isEmpty());
         /*
          * Tests the setter and verify immediately with the getter methods.
          */
         metadata.setHierarchyLevelNames(Arrays.asList(names));
         metadata.setHierarchyLevels(Arrays.asList(levels));
         assertArrayEquals(names,  metadata.getHierarchyLevelNames().toArray());
         assertArrayEquals(levels, metadata.getHierarchyLevels().toArray());
         /*
          * The above deprecated methods shall have created MetadataScope object. Verify that.
          */
         final Collection<MetadataScope> scopes = metadata.getMetadataScopes();
         final Iterator<MetadataScope> it = scopes.iterator();
         MetadataScope scope = it.next();
         assertEquals("Bridges", scope.getName().toString());
         assertEquals(ScopeCode.FEATURE_TYPE, scope.getResourceScope());
         scope = it.next();
         assertEquals("Golden Gate Bridge", scope.getName().toString());
         assertEquals(ScopeCode.FEATURE, scope.getResourceScope());
         /*
          * Changes in the MetadataScope object shall be reflected immediately on the scope collection.
          * Verify that.
          */
         it.remove();
         assertFalse(it.hasNext());
         final var c = new DefaultMetadataScope(
                 levels[1] = ScopeCode.ATTRIBUTE_TYPE,
                 names [1] = "Clearance");
         assertTrue(scopes.add(c));
         assertArrayEquals(names,  metadata.getHierarchyLevelNames().toArray());
         assertArrayEquals(levels, metadata.getHierarchyLevels().toArray());
         /*
          * Test the customized equals(Object) and hashCode() implementations.
          * Note: the `assertNotSame` check is not a contract requirement. It is just that if
          * `n1` and `n2` are the same, then the test become pointless and should be removed.
          */
         Collection<String> n1 = metadata.getHierarchyLevelNames();
         Collection<String> n2 = metadata.getHierarchyLevelNames();
         assertNotSame(n1, n2, "Remove this test.");                 // See above comment.
         assertTrue(n1.equals(n2));
         assertTrue(n2.equals(n1));
         assertEquals(n1.hashCode(), n2.hashCode());
     }

     /**
      * Tests {@link DefaultMetadata#getDateStamp()} and {@link DefaultMetadata#setDateStamp(Date)} methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testDateStamp() {
         final var metadata = new DefaultMetadata();
         assertNull(metadata.getDateStamp());
         /*
          * Verifies that the deprecated method get its value from the CitationDate objects.
          */
         Date creation = date("2014-10-07 00:00:00");
         final var dates = new DefaultCitationDate[] {
                 new DefaultCitationDate(date("2014-10-09 00:00:00"), DateType.LAST_UPDATE),
                 new DefaultCitationDate(creation, DateType.CREATION)
         };
         metadata.setDateInfo(Arrays.asList(dates));
         assertEquals(creation, metadata.getDateStamp());
         /*
          * Invoking the deprecated setters shall modify the CitationDate object
          * associated to DateType.CREATION.
          */
         creation = date("2014-10-06 00:00:00");
         metadata.setDateStamp(creation);
         assertEquals(creation, dates[1].getDate());
         assertArrayEquals(dates, metadata.getDateInfo().toArray());
     }

     /**
      * Tests {@link DefaultMetadata#getMetadataStandardName()}, {@link DefaultMetadata#getMetadataStandardVersion()},
      * {@link DefaultMetadata#setMetadataStandardName(String)} and {@link DefaultMetadata#setMetadataStandardVersion(String)}
      * methods.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testMetadataStandard() {
         final var metadata = new DefaultMetadata();
         assertNull(metadata.getMetadataStandardName());
         assertNull(metadata.getMetadataStandardVersion());

         String name = "ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data";
         String version = "ISO 19115-2:2019";
         metadata.setMetadataStandardName(name);
         metadata.setMetadataStandardVersion(version);
         assertEquals(name,    metadata.getMetadataStandardName());
         assertEquals(version, metadata.getMetadataStandardVersion());
         final Citation standard = getSingleton(metadata.getMetadataStandards());
         assertTitleEquals(name, standard, "standard");
         assertEquals(version, standard.getEdition().toString());
     }

     /**
      * Tests {@link DefaultMetadata#getDataSetUri()}.
      *
      * @throws URISyntaxException if the URI used in this test is malformed.
      */
     @Test
     @SuppressWarnings("deprecation")
     public void testDataSetUri() throws URISyntaxException {
         final var metadata = new DefaultMetadata();
         metadata.setDataSetUri("file:/tmp/myfile.txt");
         assertEquals("file:/tmp/myfile.txt", metadata.getDataSetUri());
         assertEquals("file:/tmp/myfile.txt", getSingleton(getSingleton(metadata.getIdentificationInfo())
                 .getCitation().getOnlineResources()).getLinkage().toString());
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package org.apache.sis.metadata.iso;

	import java.util.Date;
	import java.util.Locale;
	import java.util.Arrays;
	import java.util.Iterator;
	import java.util.Collection;
	import java.util.Collections;
	import java.net.URISyntaxException;
	import jakarta.xml.bind.JAXBException;
	import org.opengis.metadata.citation.Citation;
	import org.opengis.metadata.citation.DateType;
	import org.opengis.metadata.maintenance.ScopeCode;
	import org.apache.sis.xml.Namespaces;
	import org.apache.sis.util.SimpleInternationalString;
	import org.apache.sis.metadata.iso.citation.DefaultCitation;
	import org.apache.sis.metadata.iso.citation.DefaultCitationDate;

	// Test dependencies
	import org.junit.jupiter.api.Test;
	import static org.junit.jupiter.api.Assertions.*;
	import org.apache.sis.xml.test.TestCase;
	import static org.apache.sis.test.TestUtilities.date;
	import static org.apache.sis.test.TestUtilities.getSingleton;
	import static org.apache.sis.metadata.Assertions.assertTitleEquals;

	// Specific to the geoapi-3.1 and geoapi-4.0 branches:
	import org.opengis.metadata.MetadataScope;


	/**
	* Tests {@link DefaultMetadata}, without Coordinate Reference System (CRS) information.
	*
	* <p><b>Note:</b> a metadata object with CRS information is tested by a different
	* {@code org.apache.sis.test.integration.DefaultMetadataTest} class in the
	* {@code org.apache.sis.referencing} module.</p>
	*
	* @author Cédric Briançon (Geomatys)
	* @author Martin Desruisseaux (Geomatys)
	* @author Cullen Rombach (Image Matters)
	*/
	public final class DefaultMetadataTest extends TestCase {
	/**
	* Creates a new test case.
	*/
	public DefaultMetadataTest() {
	}

	/**
	* Tests unmarshalling of a metadata having a collection that contains no element.
	* This was used to cause a {@code NullPointerException} prior SIS-139 fix.
	*
	* @throws JAXBException if an error occurred during the during unmarshalling processes.
	*
	* @see <a href="https://issues.apache.org/jira/browse/SIS-139">SIS-139</a>
	*/
	@Test
	public void testEmptyCollection() throws JAXBException {
	final DefaultMetadata metadata = unmarshal(DefaultMetadata.class,
	"<mdb:MD_Metadata xmlns:mdb=\"" + Namespaces.MDB + "\">\n" +
	" <mdb:contact/>\n" +
	"</mdb:MD_Metadata>");
	/*
	* Verify metadata property.
	*/
	assertTrue(metadata.getContacts().isEmpty());
	}

	/**
	* Tests {@link DefaultMetadata#getFileIdentifier()} and {@link DefaultMetadata#setFileIdentifier(String)}
	* legacy methods. Those methods should delegate to newer methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testFileIdentifier() {
	final var metadata = new DefaultMetadata();
	assertNull(metadata.getFileIdentifier());
	metadata.setFileIdentifier("Apache SIS/Metadata test");
	assertEquals("Apache SIS/Metadata test", metadata.getMetadataIdentifier().getCode());
	assertEquals("Apache SIS/Metadata test", metadata.getFileIdentifier());
	}

	/**
	* Tests {@link DefaultMetadata#getLanguage()}, {@link DefaultMetadata#setLanguage(Locale)}
	* and {@link DefaultMetadata#getLocales()} legacy methods.
	* Those methods should delegate to newer methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testLocales() {
	final var metadata = new DefaultMetadata();
	assertNull(metadata.getLanguage());
	/*
	* Set the default language, which shall be the first entry in the collection.
	* The "other locales" property shall be unmodified by the "language" one.
	*/
	metadata.setLanguage(Locale.JAPANESE);
	assertLanguagesEquals(metadata, Locale.JAPANESE);
	/*
	* Add other languages. They should appear as additional entries after the first one.
	* The "language" property shall be unmodified by changes in the "other locales" one.
	*/
	Collections.addAll(metadata.getLocales(), Locale.FRENCH, Locale.ENGLISH);
	assertLanguagesEquals(metadata, Locale.JAPANESE, Locale.FRENCH, Locale.ENGLISH);
	/*
	* Ensure that the "locales" list is modifiable, since JAXB writes directly in it.
	*/
	metadata.getLocales().clear();
	assertLanguagesEquals(metadata, Locale.JAPANESE);
	final Collection<Locale> locales = metadata.getLocales();
	assertTrue(locales.add(Locale.KOREAN));
	assertTrue(locales.add(Locale.ENGLISH));
	assertLanguagesEquals(metadata, Locale.JAPANESE, Locale.KOREAN, Locale.ENGLISH);
	/*
	* Changing again the default language shall not change the other locales.
	*/
	metadata.setLanguage(Locale.GERMAN);
	assertLanguagesEquals(metadata, Locale.GERMAN, Locale.KOREAN, Locale.ENGLISH);
	}

	/**
	* Compares the {@link DefaultMetadata#getLanguages()}, {@link DefaultMetadata#getLanguage()} and
	* {@link DefaultMetadata#getLocales()} values against the expected array.
	*/
	@SuppressWarnings("deprecation")
	private static void assertLanguagesEquals(final DefaultMetadata metadata, final Locale... expected) {
	assertArrayEquals(expected, metadata.getLocalesAndCharsets().keySet().toArray());
	assertEquals (expected[0], metadata.getLanguage());
	assertArrayEquals(Arrays.copyOfRange(expected, 1, expected.length), metadata.getLocales().toArray());
	}

	/**
	* Tests {@link DefaultMetadata#getParentIdentifier()} and {@link DefaultMetadata#setParentIdentifier(String)}
	* methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testParentIdentifier() {
	final var metadata = new DefaultMetadata();
	assertNull(metadata.getParentIdentifier());
	metadata.setParentIdentifier("ParentID");
	assertEquals("ParentID", metadata.getParentIdentifier());

	var c = assertInstanceOf(DefaultCitation.class, metadata.getParentMetadata());
	assertTitleEquals("ParentID", c, "parentMetadata");
	c.setTitle(new SimpleInternationalString("New parent"));
	assertEquals("New parent", metadata.getParentIdentifier());
	}

	/**
	* Tests {@link DefaultMetadata#getHierarchyLevels()}, {@link DefaultMetadata#getHierarchyLevelNames()},
	* {@link DefaultMetadata#setHierarchyLevels(Collection)} and {@link DefaultMetadata#setHierarchyLevelNames(Collection)}
	* methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testHierarchyLevels() {
	final var names = new String[] {"Bridges", "Golden Gate Bridge"};
	final var levels = new ScopeCode[] {ScopeCode.FEATURE_TYPE, ScopeCode.FEATURE};
	final var metadata = new DefaultMetadata();
	assertTrue(metadata.getHierarchyLevelNames().isEmpty());
	assertTrue(metadata.getHierarchyLevels().isEmpty());
	/*
	* Tests the setter and verify immediately with the getter methods.
	*/
	metadata.setHierarchyLevelNames(Arrays.asList(names));
	metadata.setHierarchyLevels(Arrays.asList(levels));
	assertArrayEquals(names, metadata.getHierarchyLevelNames().toArray());
	assertArrayEquals(levels, metadata.getHierarchyLevels().toArray());
	/*
	* The above deprecated methods shall have created MetadataScope object. Verify that.
	*/
	final Collection<MetadataScope> scopes = metadata.getMetadataScopes();
	final Iterator<MetadataScope> it = scopes.iterator();
	MetadataScope scope = it.next();
	assertEquals("Bridges", scope.getName().toString());
	assertEquals(ScopeCode.FEATURE_TYPE, scope.getResourceScope());
	scope = it.next();
	assertEquals("Golden Gate Bridge", scope.getName().toString());
	assertEquals(ScopeCode.FEATURE, scope.getResourceScope());
	/*
	* Changes in the MetadataScope object shall be reflected immediately on the scope collection.
	* Verify that.
	*/
	it.remove();
	assertFalse(it.hasNext());
	final var c = new DefaultMetadataScope(
	levels[1] = ScopeCode.ATTRIBUTE_TYPE,
	names [1] = "Clearance");
	assertTrue(scopes.add(c));
	assertArrayEquals(names, metadata.getHierarchyLevelNames().toArray());
	assertArrayEquals(levels, metadata.getHierarchyLevels().toArray());
	/*
	* Test the customized equals(Object) and hashCode() implementations.
	* Note: the `assertNotSame` check is not a contract requirement. It is just that if
	* `n1` and `n2` are the same, then the test become pointless and should be removed.
	*/
	Collection<String> n1 = metadata.getHierarchyLevelNames();
	Collection<String> n2 = metadata.getHierarchyLevelNames();
	assertNotSame(n1, n2, "Remove this test."); // See above comment.
	assertTrue(n1.equals(n2));
	assertTrue(n2.equals(n1));
	assertEquals(n1.hashCode(), n2.hashCode());
	}

	/**
	* Tests {@link DefaultMetadata#getDateStamp()} and {@link DefaultMetadata#setDateStamp(Date)} methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testDateStamp() {
	final var metadata = new DefaultMetadata();
	assertNull(metadata.getDateStamp());
	/*
	* Verifies that the deprecated method get its value from the CitationDate objects.
	*/
	Date creation = date("2014-10-07 00:00:00");
	final var dates = new DefaultCitationDate[] {
	new DefaultCitationDate(date("2014-10-09 00:00:00"), DateType.LAST_UPDATE),
	new DefaultCitationDate(creation, DateType.CREATION)
	};
	metadata.setDateInfo(Arrays.asList(dates));
	assertEquals(creation, metadata.getDateStamp());
	/*
	* Invoking the deprecated setters shall modify the CitationDate object
	* associated to DateType.CREATION.
	*/
	creation = date("2014-10-06 00:00:00");
	metadata.setDateStamp(creation);
	assertEquals(creation, dates[1].getDate());
	assertArrayEquals(dates, metadata.getDateInfo().toArray());
	}

	/**
	* Tests {@link DefaultMetadata#getMetadataStandardName()}, {@link DefaultMetadata#getMetadataStandardVersion()},
	* {@link DefaultMetadata#setMetadataStandardName(String)} and {@link DefaultMetadata#setMetadataStandardVersion(String)}
	* methods.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testMetadataStandard() {
	final var metadata = new DefaultMetadata();
	assertNull(metadata.getMetadataStandardName());
	assertNull(metadata.getMetadataStandardVersion());

	String name = "ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data";
	String version = "ISO 19115-2:2019";
	metadata.setMetadataStandardName(name);
	metadata.setMetadataStandardVersion(version);
	assertEquals(name, metadata.getMetadataStandardName());
	assertEquals(version, metadata.getMetadataStandardVersion());
	final Citation standard = getSingleton(metadata.getMetadataStandards());
	assertTitleEquals(name, standard, "standard");
	assertEquals(version, standard.getEdition().toString());
	}

	/**
	* Tests {@link DefaultMetadata#getDataSetUri()}.
	*
	* @throws URISyntaxException if the URI used in this test is malformed.
	*/
	@Test
	@SuppressWarnings("deprecation")
	public void testDataSetUri() throws URISyntaxException {
	final var metadata = new DefaultMetadata();
	metadata.setDataSetUri("file:/tmp/myfile.txt");
	assertEquals("file:/tmp/myfile.txt", metadata.getDataSetUri());
	assertEquals("file:/tmp/myfile.txt", getSingleton(getSingleton(metadata.getIdentificationInfo())
	.getCitation().getOnlineResources()).getLinkage().toString());
	}
	}