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- /*
- * 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.pdf;
-
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.fail;
-
- import java.io.ByteArrayOutputStream;
- import java.io.IOException;
-
- import org.junit.Before;
- import org.junit.Test;
-
- /**
- * Tests the PDFObject class.
- */
- public class PDFObjectTestCase {
- /** The document behind this object */
- protected final PDFDocument doc = new PDFDocument("test");
- /** The parent of this object */
- protected final PDFObject parent = new DummyPDFObject();
- /** The test subject */
- protected PDFObject pdfObjectUnderTest;
-
- private static class DummyPDFObject extends PDFObject {
-
- };
-
- @Before
- public void setUp() {
- pdfObjectUnderTest = new DummyPDFObject();
- pdfObjectUnderTest.setDocument(doc);
- pdfObjectUnderTest.setParent(parent);
- }
-
- /**
- * Tests setObjectNumber()
- */
- @Test
- public void testSetObjectNumber() {
- pdfObjectUnderTest.setObjectNumber(1);
- assertEquals(1, pdfObjectUnderTest.getObjectNumber());
-
- pdfObjectUnderTest.setObjectNumber(5);
- assertEquals(5, pdfObjectUnderTest.getObjectNumber());
- }
-
- /**
- * Tests hasObjectNumber() - returns the object number of the underlying PDF object.
- */
- @Test
- public void testHasObjectNumber() {
- assertFalse(pdfObjectUnderTest.hasObjectNumber());
-
- pdfObjectUnderTest.setObjectNumber(1);
- assertTrue(pdfObjectUnderTest.hasObjectNumber());
- }
-
- /**
- * Tests getGeneration() - returns the generation number of the underlying PDF object.
- */
- @Test
- public void testGetGeneration() {
- // Default should be 0
- assertEquals(0, pdfObjectUnderTest.getGeneration());
- // apparently there is no way to set this to anything other than 0
- }
-
- /**
- * Tests setDocument() - returns the document to which this object is bound.
- */
- @Test
- public void testSetDocument() {
- assertEquals(doc, pdfObjectUnderTest.getDocument());
- // assign a different document to the object and test (this should be immutable but isn't)
- PDFDocument anotherDoc = new PDFDocument("another test");
- pdfObjectUnderTest.setDocument(anotherDoc);
- assertEquals(anotherDoc, pdfObjectUnderTest.getDocument());
- }
-
- /**
- * Tests setParent() - assigns the object a parent.
- */
- @Test
- public void testSetParent() {
- assertEquals(parent, pdfObjectUnderTest.getParent());
- // assign another parent (this probably shouldn't me mutable)
- DummyPDFObject anotherParent = new DummyPDFObject();
- pdfObjectUnderTest.setParent(anotherParent);
- assertEquals(anotherParent, pdfObjectUnderTest.getParent());
- }
-
- /**
- * Test getObjectID() - returns the PDF object ID.
- */
- @Test
- public void testGetObjectID() {
- pdfObjectUnderTest.setObjectNumber(10);
- // String is of the format "<object#> <generation#> obj\n"
- assertEquals("10 0 obj\n", pdfObjectUnderTest.getObjectID());
- }
-
- /**
- * Test referencePDF() - returns a {@link String} in PDF format to reference this object.
- */
- @Test
- public void testReferencePDF() {
- try {
- pdfObjectUnderTest.referencePDF();
- fail("The object number is not set, an exception should be thrown");
- } catch (IllegalArgumentException e) {
- // PASS
- }
- pdfObjectUnderTest.setObjectNumber(10);
- // Referencing this object is in the format "<obj#> <gen#> R"
- assertEquals("10 0 R", pdfObjectUnderTest.referencePDF());
- }
-
- /**
- * Test makeReference() - returns this object represented as a {@link PDFReference}.
- */
- @Test
- public void testMakeReference() {
- // Not very intelligent but, there's not much to test here
- pdfObjectUnderTest.setObjectNumber(10);
- PDFReference ref = pdfObjectUnderTest.makeReference();
- assertEquals(pdfObjectUnderTest.getObjectNumber(), ref.getObjectNumber());
- assertEquals(pdfObjectUnderTest, ref.getObject());
- assertEquals(pdfObjectUnderTest.referencePDF(), ref.toString());
- }
-
- /**
- * Tests PDF object references.
- * @throws Exception if an error occurs
- */
- @Test
- public void testReference() throws Exception {
- PDFDictionary dict = new PDFDictionary();
- dict.setObjectNumber(7);
- PDFReference ref = dict.makeReference();
- assertEquals(ref.getObjectNumber(), 7);
- assertEquals(ref.getGeneration(), 0);
- assertEquals(ref.toString(), "7 0 R");
-
- ref = new PDFReference("8 0 R");
- assertEquals(ref.getObjectNumber(), 8);
- assertEquals(ref.getGeneration(), 0);
- assertEquals(ref.toString(), "8 0 R");
- }
-
- /**
- * A generic method to test output() for sub-classes of (@link PDFObject}. The expected String
- * should be formatted such that the object number and object descriptor aren't printed i.e.
- * for a simple integer object in PDF:
- * <pre>
- * 1 0 obj ** ommited from expectedString
- * 10
- * endobj ** ommited from expectedString
- * </pre>
- * Thus the expected string would be "10".
- * @param expectedString the string that is expected.
- * @param object the object being tested
- * @throws IOException error with I/O
- */
- protected void testOutputStreams(String expectedString, PDFObject object) throws IOException {
- // Test both with and without object numbers
- ByteArrayOutputStream outStream = new ByteArrayOutputStream();
- // Ensure that
- object.setObjectNumber(0);
- assertEquals(expectedString.length(), object.output(outStream));
- assertEquals(expectedString, outStream.toString());
- outStream.reset();
- object.setObjectNumber(1);
- // Test the length of the output string is returned correctly.
- assertEquals(expectedString.length(), object.output(outStream));
- assertEquals(expectedString, outStream.toString());
- }
- }
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