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Posted to commits@commonsrdf.apache.org by st...@apache.org on 2016/10/26 11:35:54 UTC

[28/50] [abbrv] incubator-commonsrdf git commit: AbstractRDFParserTest moved to ...experimental

AbstractRDFParserTest moved to ...experimental


Project: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/commit/74196bdd
Tree: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/tree/74196bdd
Diff: http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/diff/74196bdd

Branch: refs/heads/master
Commit: 74196bdd363983648860e98e59888ce552e95933
Parents: c3c1719
Author: Stian Soiland-Reyes <st...@apache.org>
Authored: Tue Sep 27 18:46:25 2016 +0100
Committer: Stian Soiland-Reyes <st...@apache.org>
Committed: Tue Sep 27 18:46:25 2016 +0100

----------------------------------------------------------------------
 .../simple/AbstractRDFParserBuilderTest.java    | 254 ------------------
 .../experimental/AbstractRDFParserTest.java     | 256 +++++++++++++++++++
 2 files changed, 256 insertions(+), 254 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/74196bdd/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
----------------------------------------------------------------------
diff --git a/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java b/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
deleted file mode 100644
index f115e94..0000000
--- a/simple/src/test/java/org/apache/commons/rdf/simple/AbstractRDFParserBuilderTest.java
+++ /dev/null
@@ -1,254 +0,0 @@
-/**
- * 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.commons.rdf.simple;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.concurrent.TimeUnit;
-
-import org.apache.commons.rdf.api.Graph;
-import org.apache.commons.rdf.api.IRI;
-import org.apache.commons.rdf.api.Literal;
-import org.apache.commons.rdf.api.RDFSyntax;
-import org.apache.commons.rdf.api.RDFTerm;
-import org.apache.commons.rdf.api.RDFTermFactory;
-import org.apache.commons.rdf.api.Triple;
-import org.apache.commons.rdf.experimental.RDFParser;
-import org.apache.commons.rdf.simple.experimental.AbstractRDFParser;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.rules.ExpectedException;
-
-public class AbstractRDFParserBuilderTest {
-
-	private RDFTermFactory factory = new SimpleRDFTermFactory();
-	
-	private DummyRDFParserBuilder dummyParser = new DummyRDFParserBuilder();
-	private Path testNt;
-	private Path testTtl;
-	private Path testXml;
-
-	@Before
-	public void createTempFile() throws IOException {
-		testNt = Files.createTempFile("test", ".nt");
-		testTtl = Files.createTempFile("test", ".ttl");
-		testXml = Files.createTempFile("test", ".xml");
-
-		// No need to populate the files as the dummy parser
-		// doesn't actually read anything
-	}
-
-	@After
-	public void deleteTempFiles() throws IOException {
-		Files.deleteIfExists(testNt);
-		Files.deleteIfExists(testTtl);
-		Files.deleteIfExists(testXml);
-	}
-
-	@Test
-	public void guessRDFSyntax() throws Exception {
-		assertEquals(RDFSyntax.NTRIPLES, AbstractRDFParser.guessRDFSyntax(testNt).get());
-		assertEquals(RDFSyntax.TURTLE, AbstractRDFParser.guessRDFSyntax(testTtl).get());
-		assertFalse(AbstractRDFParser.guessRDFSyntax(testXml).isPresent());
-	}
-
-	private void checkGraph(Graph g) throws Exception {				
-		assertTrue(g.size() > 0);		
-		IRI greeting = factory.createIRI("http://example.com/greeting");	
-		// Should only have parsed once!
-		assertEquals(1, g.getTriples(null, greeting, null).count());
-		Triple triple = g.getTriples(null, greeting, null).findAny().get();
-		assertTrue(triple.getSubject() instanceof IRI);
-		IRI parsing = (IRI) triple.getSubject();
-		assertTrue(parsing.getIRIString().startsWith("urn:uuid:"));
-
-		assertEquals("http://example.com/greeting", triple.getPredicate().getIRIString());
-
-		assertTrue(triple.getObject() instanceof Literal);
-		Literal literal = (Literal) triple.getObject();
-		assertEquals("Hello world", literal.getLexicalForm());
-		assertFalse(literal.getLanguageTag().isPresent());
-		assertEquals(Types.XSD_STRING, literal.getDatatype());
-		
-		// Check uniqueness of properties that are always present
-		assertEquals(1, 
-				g.getTriples(null, factory.createIRI("http://example.com/source"), null).count());
-		
-		// Check optional properties that are unique
-		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/base"), null).count());
-		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/contentType"), null).count());
-		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/contentTypeSyntax"), null).count());
-	}
-	
-	@Test
-	public void parseFile() throws Exception {	
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser.source(testNt).target(g);
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		// FIXME: this could potentially break if the equivalent of /tmp includes
-		// international characters
-		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "source"));
-		// Should be set to the file path
-		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "base"));		
-
-		// Should NOT have guessed the content type
-		assertNull(firstPredicate(g, "contentType"));
-		assertNull(firstPredicate(g, "contentTypeSyntax"));
-	}
-
-
-	@Test
-	public void parseNoSource() throws Exception {
-		thrown.expect(IllegalStateException.class);
-		dummyParser.parse();		
-	}
-	
-	@Test
-	public void parseBaseAndContentTypeNoSource() throws Exception {
-		// Can set the other options, even without source()
-		IRI base = dummyParser.createRDFTermFactory().createIRI("http://www.example.org/test.rdf");
-		RDFParser parser = dummyParser.base(base).contentType(RDFSyntax.RDFXML);
-		thrown.expect(IllegalStateException.class);
-		thrown.expectMessage("No source has been set");
-		// but .parse() should fail
-		parser.parse();		
-	}
-	
-	@Test
-	public void parseFileMissing() throws Exception {
-		Files.delete(testNt);
-		// This should not fail yet
-		RDFParser parser = dummyParser.source(testNt);
-		// but here:
-		thrown.expect(IOException.class);
-		parser.parse();		
-	}
-
-	
-	@Test
-	public void parseFileContentType() throws Exception {
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser
-				.source(testNt)
-				.contentType(RDFSyntax.NTRIPLES)
-				.target(g);
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		// FIXME: this could potentially break if the equivalent of /tmp includes
-		// international characters
-		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "source"));
-		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "base"));		
-		assertEquals("\"NTRIPLES\"", firstPredicate(g, "contentTypeSyntax"));
-		assertEquals("\"application/n-triples\"", firstPredicate(g, "contentType"));
-	}
-
-	private String firstPredicate(Graph g, String pred) {
-		return g.getTriples(null, factory.createIRI("http://example.com/" + pred), null)
-				.map(Triple::getObject).map(RDFTerm::ntriplesString).findAny().orElse(null);
-	}
-
-
-	@Rule
-	public ExpectedException thrown = ExpectedException.none();
-	
-	@Test
-	public void parseInputStreamFailsIfBaseMissing() throws Exception {
-		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
-		// Should not fail at this point
-		RDFParser parser = dummyParser.source(inputStream);
-		// but here:
-		thrown.expect(IllegalStateException.class);
-		thrown.expectMessage("base iri required for inputstream source");
-		parser.parse();
-	}
-
-	@Test
-	public void parseInputStreamWithBase() throws Exception {
-		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
-		IRI base = dummyParser.createRDFTermFactory().createIRI("http://www.example.org/test.rdf");
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser.source(inputStream).base(base).target(g);		
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		assertEquals("<http://www.example.org/test.rdf>", firstPredicate(g, "base"));
-		// in our particular debug output, 
-		// bnode source indicates InputStream 
-		assertTrue(firstPredicate(g, "source").startsWith("_:"));
-		assertNull(firstPredicate(g, "contentType"));
-		assertNull(firstPredicate(g, "contentTypeSyntax"));
-	}
-	
-	@Test
-	public void parseInputStreamWithNQuads() throws Exception {
-		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser.source(inputStream).contentType(RDFSyntax.NQUADS).target(g);		
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		assertNull(firstPredicate(g, "base"));
-		// in our particular debug output, 
-		// bnode source indicates InputStream 
-		assertTrue(firstPredicate(g, "source").startsWith("_:"));
-		assertEquals("\"application/n-quads\"", firstPredicate(g, "contentType"));
-		assertEquals("\"NQUADS\"", firstPredicate(g, "contentTypeSyntax"));
-	}	
-
-	@Test
-	public void parseIRI() throws Exception {
-		IRI iri = dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl");
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser.source(iri).target(g);		
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "source"));
-		// No base - assuming the above IRI is always 
-		// the base would break server-supplied base from 
-		// any HTTP Location redirects and  Content-Location header
-		assertNull(firstPredicate(g, "base"));
-		// ".ttl" in IRI string does not imply any content type
-		assertNull(firstPredicate(g, "contentType"));
-		assertNull(firstPredicate(g, "contentTypeSyntax"));
-		
-	}
-	
-	@Test
-	public void parseIRIBaseContentType() throws Exception {
-		IRI iri = dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl");
-		Graph g = factory.createGraph();
-		RDFParser parser = dummyParser.source(iri).base(iri).contentType(RDFSyntax.TURTLE).target(g);
-		parser.parse().get(5, TimeUnit.SECONDS);
-		checkGraph(g);
-		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "source"));
-		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "base"));
-		assertEquals("\"TURTLE\"", firstPredicate(g, "contentTypeSyntax"));
-		assertEquals("\"text/turtle\"", firstPredicate(g, "contentType"));
-	}
-
-	
-}

http://git-wip-us.apache.org/repos/asf/incubator-commonsrdf/blob/74196bdd/simple/src/test/java/org/apache/commons/rdf/simple/experimental/AbstractRDFParserTest.java
----------------------------------------------------------------------
diff --git a/simple/src/test/java/org/apache/commons/rdf/simple/experimental/AbstractRDFParserTest.java b/simple/src/test/java/org/apache/commons/rdf/simple/experimental/AbstractRDFParserTest.java
new file mode 100644
index 0000000..f263029
--- /dev/null
+++ b/simple/src/test/java/org/apache/commons/rdf/simple/experimental/AbstractRDFParserTest.java
@@ -0,0 +1,256 @@
+/**
+ * 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.commons.rdf.simple.experimental;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.commons.rdf.api.Graph;
+import org.apache.commons.rdf.api.IRI;
+import org.apache.commons.rdf.api.Literal;
+import org.apache.commons.rdf.api.RDFSyntax;
+import org.apache.commons.rdf.api.RDFTerm;
+import org.apache.commons.rdf.api.RDFTermFactory;
+import org.apache.commons.rdf.api.Triple;
+import org.apache.commons.rdf.experimental.RDFParser;
+import org.apache.commons.rdf.simple.DummyRDFParserBuilder;
+import org.apache.commons.rdf.simple.SimpleRDFTermFactory;
+import org.apache.commons.rdf.simple.Types;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+public class AbstractRDFParserTest {
+
+	private RDFTermFactory factory = new SimpleRDFTermFactory();
+	
+	private DummyRDFParserBuilder dummyParser = new DummyRDFParserBuilder();
+	private Path testNt;
+	private Path testTtl;
+	private Path testXml;
+
+	@Before
+	public void createTempFile() throws IOException {
+		testNt = Files.createTempFile("test", ".nt");
+		testTtl = Files.createTempFile("test", ".ttl");
+		testXml = Files.createTempFile("test", ".xml");
+
+		// No need to populate the files as the dummy parser
+		// doesn't actually read anything
+	}
+
+	@After
+	public void deleteTempFiles() throws IOException {
+		Files.deleteIfExists(testNt);
+		Files.deleteIfExists(testTtl);
+		Files.deleteIfExists(testXml);
+	}
+
+	@Test
+	public void guessRDFSyntax() throws Exception {
+		assertEquals(RDFSyntax.NTRIPLES, AbstractRDFParser.guessRDFSyntax(testNt).get());
+		assertEquals(RDFSyntax.TURTLE, AbstractRDFParser.guessRDFSyntax(testTtl).get());
+		assertFalse(AbstractRDFParser.guessRDFSyntax(testXml).isPresent());
+	}
+
+	private void checkGraph(Graph g) throws Exception {				
+		assertTrue(g.size() > 0);		
+		IRI greeting = factory.createIRI("http://example.com/greeting");	
+		// Should only have parsed once!
+		assertEquals(1, g.getTriples(null, greeting, null).count());
+		Triple triple = g.getTriples(null, greeting, null).findAny().get();
+		assertTrue(triple.getSubject() instanceof IRI);
+		IRI parsing = (IRI) triple.getSubject();
+		assertTrue(parsing.getIRIString().startsWith("urn:uuid:"));
+
+		assertEquals("http://example.com/greeting", triple.getPredicate().getIRIString());
+
+		assertTrue(triple.getObject() instanceof Literal);
+		Literal literal = (Literal) triple.getObject();
+		assertEquals("Hello world", literal.getLexicalForm());
+		assertFalse(literal.getLanguageTag().isPresent());
+		assertEquals(Types.XSD_STRING, literal.getDatatype());
+		
+		// Check uniqueness of properties that are always present
+		assertEquals(1, 
+				g.getTriples(null, factory.createIRI("http://example.com/source"), null).count());
+		
+		// Check optional properties that are unique
+		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/base"), null).count());
+		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/contentType"), null).count());
+		assertTrue(2 > g.getTriples(null, factory.createIRI("http://example.com/contentTypeSyntax"), null).count());
+	}
+	
+	@Test
+	public void parseFile() throws Exception {	
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser.source(testNt).target(g);
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		// FIXME: this could potentially break if the equivalent of /tmp includes
+		// international characters
+		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "source"));
+		// Should be set to the file path
+		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "base"));		
+
+		// Should NOT have guessed the content type
+		assertNull(firstPredicate(g, "contentType"));
+		assertNull(firstPredicate(g, "contentTypeSyntax"));
+	}
+
+
+	@Test
+	public void parseNoSource() throws Exception {
+		thrown.expect(IllegalStateException.class);
+		dummyParser.parse();		
+	}
+	
+	@Test
+	public void parseBaseAndContentTypeNoSource() throws Exception {
+		// Can set the other options, even without source()
+		IRI base = dummyParser.createRDFTermFactory().createIRI("http://www.example.org/test.rdf");
+		RDFParser parser = dummyParser.base(base).contentType(RDFSyntax.RDFXML);
+		thrown.expect(IllegalStateException.class);
+		thrown.expectMessage("No source has been set");
+		// but .parse() should fail
+		parser.parse();		
+	}
+	
+	@Test
+	public void parseFileMissing() throws Exception {
+		Files.delete(testNt);
+		// This should not fail yet
+		RDFParser parser = dummyParser.source(testNt);
+		// but here:
+		thrown.expect(IOException.class);
+		parser.parse();		
+	}
+
+	
+	@Test
+	public void parseFileContentType() throws Exception {
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser
+				.source(testNt)
+				.contentType(RDFSyntax.NTRIPLES)
+				.target(g);
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		// FIXME: this could potentially break if the equivalent of /tmp includes
+		// international characters
+		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "source"));
+		assertEquals("<" + testNt.toUri().toString() + ">", firstPredicate(g, "base"));		
+		assertEquals("\"NTRIPLES\"", firstPredicate(g, "contentTypeSyntax"));
+		assertEquals("\"application/n-triples\"", firstPredicate(g, "contentType"));
+	}
+
+	private String firstPredicate(Graph g, String pred) {
+		return g.getTriples(null, factory.createIRI("http://example.com/" + pred), null)
+				.map(Triple::getObject).map(RDFTerm::ntriplesString).findAny().orElse(null);
+	}
+
+
+	@Rule
+	public ExpectedException thrown = ExpectedException.none();
+	
+	@Test
+	public void parseInputStreamFailsIfBaseMissing() throws Exception {
+		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
+		// Should not fail at this point
+		RDFParser parser = dummyParser.source(inputStream);
+		// but here:
+		thrown.expect(IllegalStateException.class);
+		thrown.expectMessage("base iri required for inputstream source");
+		parser.parse();
+	}
+
+	@Test
+	public void parseInputStreamWithBase() throws Exception {
+		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
+		IRI base = dummyParser.createRDFTermFactory().createIRI("http://www.example.org/test.rdf");
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser.source(inputStream).base(base).target(g);		
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		assertEquals("<http://www.example.org/test.rdf>", firstPredicate(g, "base"));
+		// in our particular debug output, 
+		// bnode source indicates InputStream 
+		assertTrue(firstPredicate(g, "source").startsWith("_:"));
+		assertNull(firstPredicate(g, "contentType"));
+		assertNull(firstPredicate(g, "contentTypeSyntax"));
+	}
+	
+	@Test
+	public void parseInputStreamWithNQuads() throws Exception {
+		InputStream inputStream = new ByteArrayInputStream(new byte[0]);
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser.source(inputStream).contentType(RDFSyntax.NQUADS).target(g);		
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		assertNull(firstPredicate(g, "base"));
+		// in our particular debug output, 
+		// bnode source indicates InputStream 
+		assertTrue(firstPredicate(g, "source").startsWith("_:"));
+		assertEquals("\"application/n-quads\"", firstPredicate(g, "contentType"));
+		assertEquals("\"NQUADS\"", firstPredicate(g, "contentTypeSyntax"));
+	}	
+
+	@Test
+	public void parseIRI() throws Exception {
+		IRI iri = dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl");
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser.source(iri).target(g);		
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "source"));
+		// No base - assuming the above IRI is always 
+		// the base would break server-supplied base from 
+		// any HTTP Location redirects and  Content-Location header
+		assertNull(firstPredicate(g, "base"));
+		// ".ttl" in IRI string does not imply any content type
+		assertNull(firstPredicate(g, "contentType"));
+		assertNull(firstPredicate(g, "contentTypeSyntax"));
+		
+	}
+	
+	@Test
+	public void parseIRIBaseContentType() throws Exception {
+		IRI iri = dummyParser.createRDFTermFactory().createIRI("http://www.example.net/test.ttl");
+		Graph g = factory.createGraph();
+		RDFParser parser = dummyParser.source(iri).base(iri).contentType(RDFSyntax.TURTLE).target(g);
+		parser.parse().get(5, TimeUnit.SECONDS);
+		checkGraph(g);
+		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "source"));
+		assertEquals("<http://www.example.net/test.ttl>", firstPredicate(g, "base"));
+		assertEquals("\"TURTLE\"", firstPredicate(g, "contentTypeSyntax"));
+		assertEquals("\"text/turtle\"", firstPredicate(g, "contentType"));
+	}
+
+	
+}