/*
* 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.pdfbox.pdmodel.common.function.type4;
import junit.framework.TestCase;
/**
* Tests the type 4 function parser.
*
*/
public class TestParser extends TestCase
{
/**
* Test the very basics.
* @throws Exception if an error occurs
*/
public void testParserBasics() throws Exception
{
Type4Tester.create("3 4 add 2 sub").pop(5).isEmpty();
}
/**
* Test nested blocks.
* @throws Exception if an error occurs
*/
public void testNested() throws Exception
{
Type4Tester.create("true { 2 1 add } { 2 1 sub } ifelse")
.pop(3).isEmpty();
Type4Tester.create("{ true }").pop(true).isEmpty();
}
/**
* Tests parsing of real values.
* @throws Exception if an error occurs
*/
public void testParseFloat() throws Exception
{
assertEquals(0, InstructionSequenceBuilder.parseReal("0"), 0.00001f);
assertEquals(1, InstructionSequenceBuilder.parseReal("1"), 0.00001f);
assertEquals(1, InstructionSequenceBuilder.parseReal("+1"), 0.00001f);
assertEquals(-1, InstructionSequenceBuilder.parseReal("-1"), 0.00001f);
assertEquals(3.14157, InstructionSequenceBuilder.parseReal("3.14157"), 0.00001f);
assertEquals(-1.2, InstructionSequenceBuilder.parseReal("-1.2"), 0.00001f);
assertEquals(1.0E-5, InstructionSequenceBuilder.parseReal("1.0E-5"), 0.00001f);
}
/**
* Tests problematic functions from PDFBOX-804.
* @throws Exception if an error occurs
*/
public void testJira804() throws Exception
{
//This is an example of a tint to CMYK function
//Problems here were:
//1. no whitespace between "mul" and "}" (token was detected as "mul}")
//2. line breaks cause endless loops
Type4Tester.create("1 {dup dup .72 mul exch 0 exch .38 mul}\n")
.pop(0.38f).pop(0f).pop(0.72f).pop(1.0f).isEmpty();
}
}