/**
* Test method for {@link
* RDFJSONUtility.kmr.scam.rest.util.RDFJSON#graphToRdfJsonPreordered(java.util.Set,
* java.io.Writer)} .
*
* @throws JSONException
*/
@Test
public void testModelToRdfJsonPreorderedSetOfStatementWriter() throws Exception {
// final Set<Statement> testStatements = new TreeSet<Statement>(new StatementComparator());
final Model testStatements = new TreeModel();
final ValueFactoryImpl vf = ValueFactoryImpl.getInstance();
final BNode testBNode1 = vf.createBNode();
final BNode testBNode2 = vf.createBNode();
final URI testURI1 = vf.createURI("http://example.org/test/rdf/json/1");
final URI testURI2 = vf.createURI("http://my.test.org/rdf/type/2");
final URI testURI3 = vf.createURI("http://example.org/test/rdf/json/3");
final URI testURI4 = vf.createURI("http://example.org/test/rdf/json/4");
final URI testURI5 = vf.createURI("http://my.test.org/rdf/type/5");
final Statement testStatement1 = vf.createStatement(testURI1, testURI2, testURI3);
testStatements.add(testStatement1);
final Statement testStatement2 = vf.createStatement(testURI1, testURI2, testBNode1);
testStatements.add(testStatement2);
final Statement testStatement3 = vf.createStatement(testURI1, testURI2, testBNode2);
testStatements.add(testStatement3);
final Statement testStatement4 = vf.createStatement(testURI4, testURI2, testURI3);
testStatements.add(testStatement4);
final Statement testStatement5 = vf.createStatement(testURI4, testURI2, testBNode2);
testStatements.add(testStatement5);
final Statement testStatement6 = vf.createStatement(testURI4, testURI2, testBNode1);
testStatements.add(testStatement6);
final Statement testStatement7 = vf.createStatement(testBNode1, testURI5, testBNode2);
testStatements.add(testStatement7);
final Statement testStatement8 = vf.createStatement(testBNode1, testURI5, testURI1);
testStatements.add(testStatement8);
final Statement testStatement9 = vf.createStatement(testBNode1, testURI5, testURI4);
testStatements.add(testStatement9);
// RDFJSONUnitTest.log.info("testStatements=" + testStatements);
Assert.assertEquals(9, testStatements.size());
// Verify that the statements are in an acceptable order (testStatement5 and testStatement6
// can be legitimately swapped)
final Iterator<Statement> testStatementIterator = testStatements.iterator();
Assert.assertTrue(testStatementIterator.hasNext());
// testStatement7 should always be first by virtue of the fact that it has two blank nodes
// and no other statements have two blank nodes
Assert.assertEquals(testStatement7, testStatementIterator.next());
Assert.assertTrue(testStatementIterator.hasNext());
// Then testStatement8
Assert.assertEquals(testStatement8, testStatementIterator.next());
Assert.assertTrue(testStatementIterator.hasNext());
// Then testStatement9
Assert.assertEquals(testStatement9, testStatementIterator.next());
Assert.assertTrue(testStatementIterator.hasNext());
Rio.write(testStatements, this.testWriter, RDFFormat.RDFJSON);
// RDFJSONUtility.modelToRdfJson(testStatements, this.testWriter, this.testWriterConfig);
this.testOutput = this.testWriter.toString();
Assert.assertTrue(this.testOutput.length() > 0);
Assert.assertTrue(this.testOutput.startsWith("{"));
Assert.assertTrue(this.testOutput.endsWith("}"));
// RDFJSONUnitTest.log.info("testOutput=" + this.testOutput);
final int firstBlankNode = this.testOutput.indexOf("\"_:");
// Test that a bnode exists after the opening brace
Assert.assertTrue(firstBlankNode > 0);
// The first value after the first blank node should be a blank node identifier
final int firstValue = this.testOutput.indexOf("\"value\" : \"_:", firstBlankNode);
Assert.assertTrue("A suitable blank node value was not found", firstValue > 0);
// This should be guaranteed by the indexOf contract, but doing a quick check anyway
Assert.assertTrue(firstValue > firstBlankNode);
// Do a quick check to see if the testOutput is valid JSON
// FIXME: TODO: Test using Jackson
// Assert.fail("TODO: Implement me using Jackson");
// final JSONObject testJSONObject = new JSONObject(this.testOutput);
// Assert.assertNotNull(testJSONObject);
// Assert.assertTrue(testJSONObject.length() > 0);
// Assert.assertTrue(testJSONObject.names().length() > 0);
// Assert.assertTrue(testJSONObject.keys().hasNext());
}
