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JQF: Feedback-directed Quickcheck for Java - Sample generators and benchmark tests
/*
* Copyright (c) 2017-2018 The Regents of the University of California
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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package edu.berkeley.cs.jqf.examples.common;
import java.io.IOException;
import java.io.InputStream;
import com.pholser.junit.quickcheck.generator.GenerationStatus;
import com.pholser.junit.quickcheck.generator.Generator;
import com.pholser.junit.quickcheck.generator.Size;
import com.pholser.junit.quickcheck.random.SourceOfRandomness;
/**
* @author Rohan Padhye
*/
public class ArbitraryLengthStringGenerator extends Generator {
private int maxSize = 4096;
public ArbitraryLengthStringGenerator() {
super(String.class);
}
public void configure(Size size) {
maxSize = size.max();
}
@Override
public String generate(SourceOfRandomness sourceOfRandomness, GenerationStatus generationStatus) {
InputStream in = new InputStreamGenerator().generate(sourceOfRandomness, generationStatus);
byte[] bytes = new byte[maxSize];
try {
int len = in.read(bytes);
return new String(bytes, 0, len);
} catch (IOException e) {
throw new RuntimeException("Should not get I/O exception when using generated InputStream", e);
}
}
}