classscreenertest.java

一个查找java程序里bug的程序的源代码,该程序本身也是java写的,对提高java编程水平很有用

/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2004, University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs;

import junit.framework.Assert;
import junit.framework.TestCase;

public class ClassScreenerTest extends TestCase {
	private ClassScreener emptyScreener;
	private ClassScreener particularClassScreener;
	private ClassScreener particularPackageScreener;

	private static String makeFileName(String className) {
		return className.replace('.', '/') + ".class";
	}

	private static String makeJarURL(String fileName) {
		return "jar:http://foo.com/bar.jar!/" + fileName;
	}

	private static final String FOOBAR_PACKAGE = "com.foobar";
	private static final String FURRYLEMUR_PACKAGE = "org.furrylemur";

	private static final String SOME_CLASS = FOOBAR_PACKAGE + ".SomeClass";
	private static final String SOME_OTHER_CLASS = FOOBAR_PACKAGE + ".SomeOtherClass";
	private static final String UNRELATED_THING_CLASS = FURRYLEMUR_PACKAGE + ".UnrelatedThing";

	private static final String SOME_CLASS_FILENAME = makeFileName(SOME_CLASS);
	private static final String SOME_OTHER_CLASS_FILENAME = makeFileName(SOME_OTHER_CLASS);
	private static final String UNRELATED_THING_CLASS_FILENAME = makeFileName(UNRELATED_THING_CLASS);

	private static final String SOME_CLASS_JARFILENAME = makeJarURL(SOME_CLASS_FILENAME);
	private static final String SOME_OTHER_CLASS_JARFILENAME = makeJarURL(SOME_OTHER_CLASS_FILENAME);
	private static final String UNRELATED_THING_CLASS_JARFILENAME = makeJarURL(UNRELATED_THING_CLASS_FILENAME);

	protected void setUp() {
		emptyScreener = new ClassScreener();

		particularClassScreener = new ClassScreener();
		particularClassScreener.addAllowedClass(SOME_CLASS);

		particularPackageScreener = new ClassScreener();
		particularPackageScreener.addAllowedPackage(FOOBAR_PACKAGE);
	}

	public void testEmptyClassScreener() {
		Assert.assertTrue(emptyScreener.matches(SOME_CLASS_FILENAME));
		Assert.assertTrue(emptyScreener.matches(SOME_OTHER_CLASS_FILENAME));
		Assert.assertTrue(emptyScreener.matches(UNRELATED_THING_CLASS_FILENAME));

		Assert.assertTrue(emptyScreener.matches(SOME_CLASS_JARFILENAME));
		Assert.assertTrue(emptyScreener.matches(SOME_OTHER_CLASS_JARFILENAME));
		Assert.assertTrue(emptyScreener.matches(UNRELATED_THING_CLASS_JARFILENAME));
	}

	public void testParticularClassScreener() {
		Assert.assertTrue(particularClassScreener.matches(SOME_CLASS_FILENAME));
		Assert.assertFalse(particularClassScreener.matches(SOME_OTHER_CLASS_FILENAME));
		Assert.assertFalse(particularClassScreener.matches(UNRELATED_THING_CLASS_FILENAME));

		Assert.assertTrue(particularClassScreener.matches(SOME_CLASS_JARFILENAME));
		Assert.assertFalse(particularClassScreener.matches(SOME_OTHER_CLASS_JARFILENAME));
		Assert.assertFalse(particularClassScreener.matches(UNRELATED_THING_CLASS_JARFILENAME));
	}

	public void testParticularPackageScreener() {
		Assert.assertTrue(particularPackageScreener.matches(SOME_CLASS_FILENAME));
		Assert.assertTrue(particularPackageScreener.matches(SOME_OTHER_CLASS_FILENAME));
		Assert.assertFalse(particularPackageScreener.matches(UNRELATED_THING_CLASS_FILENAME));

		Assert.assertTrue(particularPackageScreener.matches(SOME_CLASS_JARFILENAME));
		Assert.assertTrue(particularPackageScreener.matches(SOME_OTHER_CLASS_JARFILENAME));
		Assert.assertFalse(particularPackageScreener.matches(UNRELATED_THING_CLASS_JARFILENAME));
	}
}

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