| /* |
| * 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.assertTrue; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.List; |
| |
| import org.junit.Test; |
| |
| import org.apache.fop.pdf.xref.CompressedObjectReference; |
| |
| public class ObjectStreamManagerTestCase { |
| |
| private List<CompressedObjectReference> compressedObjectReferences; |
| |
| private MockPdfDocument pdfDocument; |
| |
| @Test |
| public void add() { |
| final int expectedCapacity = 100; |
| final int numCompressedObjects = expectedCapacity * 2 + 1; |
| createCompressObjectReferences(numCompressedObjects); |
| assertEquals(numCompressedObjects, compressedObjectReferences.size()); |
| int objectStreamNumber1 = assertSameObjectStream(0, expectedCapacity); |
| int objectStreamNumber2 = assertSameObjectStream(expectedCapacity, expectedCapacity * 2); |
| int objectStreamNumber3 = assertSameObjectStream(expectedCapacity * 2, numCompressedObjects); |
| assertDifferent(objectStreamNumber1, objectStreamNumber2, objectStreamNumber3); |
| assertEquals(objectStreamNumber3, pdfDocument.previous.getObjectNumber()); |
| } |
| |
| private void createCompressObjectReferences(int numObjects) { |
| pdfDocument = new MockPdfDocument(); |
| ObjectStreamManager sut = new ObjectStreamManager(pdfDocument); |
| for (int obNum = 1; obNum <= numObjects; obNum++) { |
| sut.add(createCompressedObject(obNum)); |
| } |
| compressedObjectReferences = sut.getCompressedObjectReferences(); |
| } |
| |
| private static class MockPdfDocument extends PDFDocument { |
| |
| private ObjectStream previous; |
| |
| public MockPdfDocument() { |
| super(""); |
| } |
| |
| public void assignObjectNumber(PDFObject obj) { |
| super.assignObjectNumber(obj); |
| if (obj instanceof ObjectStream) { |
| ObjectStream objStream = (ObjectStream) obj; |
| ObjectStream previous = (ObjectStream) objStream.get("Extends"); |
| if (previous == null) { |
| assertEquals(this.previous, previous); |
| } |
| this.previous = objStream; |
| } |
| } |
| } |
| |
| private CompressedObject createCompressedObject(final int objectNumber) { |
| return new CompressedObject() { |
| |
| public int getObjectNumber() { |
| return objectNumber; |
| } |
| |
| public int output(OutputStream outputStream) throws IOException { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| } |
| |
| private int assertSameObjectStream(int from, int to) { |
| int objectStreamNumber = getObjectStreamNumber(from); |
| for (int i = from + 1; i < to; i++) { |
| assertEquals(objectStreamNumber, getObjectStreamNumber(i)); |
| } |
| return objectStreamNumber; |
| } |
| |
| private int getObjectStreamNumber(int index) { |
| return compressedObjectReferences.get(index).getObjectStreamNumber(); |
| } |
| |
| private void assertDifferent(int objectStreamNumber1, int objectStreamNumber2, |
| int objectStreamNumber3) { |
| assertTrue(objectStreamNumber1 != objectStreamNumber2); |
| assertTrue(objectStreamNumber1 != objectStreamNumber3); |
| assertTrue(objectStreamNumber2 != objectStreamNumber3); |
| } |
| } |