ResourceListTest.java example

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/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite 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 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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 Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.classpath;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.Collection;

import org.evosuite.TestGenerationContext;
import org.evosuite.classpath.ClassPathHandler;
import org.evosuite.classpath.ResourceList;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

import com.examples.with.different.packagename.classpath.Foo;
import com.examples.with.different.packagename.classpath.subp.SubPackageFoo;

public class ResourceListTest {

	private static final String basePrefix = "com.examples.with.different.packagename.classpath";
	
	@BeforeClass
	public static void initClass(){
		ClassPathHandler.getInstance().changeTargetCPtoTheSameAsEvoSuite();
	} 
		
	@Before
	public void resetCache(){
		ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).resetCache();
	}
	
	//-------------------------------------------------------------------------------------------------

	@Test
	public void testGetPackageName(){
		Assert.assertEquals("", ResourceList.getParentPackageName(""));
		Assert.assertEquals("", ResourceList.getParentPackageName("foo"));
		Assert.assertEquals("foo", ResourceList.getParentPackageName("foo.bar"));
		Assert.assertEquals("bar.foo", ResourceList.getParentPackageName("bar.foo.evo"));
	}
	
	@Test
	public void testStreamFromFolder() throws Exception{
		File localFolder = new File("local_test_data"+File.separator+"aCpEntry");
		Assert.assertTrue("ERROR: file "+localFolder+" should be available on local file system",localFolder.exists());
		ClassPathHandler.getInstance().addElementToTargetProjectClassPath(localFolder.getAbsolutePath());
		
		String className = "foo.ExternalClass";
		InputStream stream = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getClassAsStream(className);
		Assert.assertNotNull(stream);
		stream.close();
	}
	
	
	@Test
	public void testStreamFromJar() throws Exception{
		File localJar = new File("local_test_data"+File.separator+"water-simulator.jar");
		Assert.assertTrue("ERROR: file "+localJar+" should be avaialable on local file system",localJar.exists());
		ClassPathHandler.getInstance().addElementToTargetProjectClassPath(localJar.getAbsolutePath());
		
		String className = "simulator.DAWN";
		InputStream stream = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getClassAsStream(className);
		Assert.assertNotNull(stream);
		stream.close();
	}
	
	@Test
	public void testHandleUnKnownJarFile(){
		
		File localJar = new File("local_test_data"+File.separator+"water-simulator.jar");
		Assert.assertTrue("ERROR: file "+localJar+" should be avaialable on local file system",localJar.exists());
		ClassPathHandler.getInstance().addElementToTargetProjectClassPath(localJar.getAbsolutePath());
		
		String prefix = "simulator";
		String target = prefix + ".DAWN"; 
		
		Assert.assertTrue("Missing: "+target,ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).hasClass(target));
		
		Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
				ClassPathHandler.getInstance().getTargetProjectClasspath(), prefix, false);
		Assert.assertTrue(classes.contains(target));
	}
	
	@Test
	public void testHandleKnownJarFile(){
		
		File localJar = new File("local_test_data"+File.separator+"asm-all-4.2.jar");
		Assert.assertTrue("ERROR: file "+localJar+" should be avaialable on local file system",localJar.exists());
		ClassPathHandler.getInstance().addElementToTargetProjectClassPath(localJar.getAbsolutePath());
		
		// we use one class among the jars EvoSuite depends on
		String target = org.objectweb.asm.util.ASMifier.class.getName();
		String prefix = org.objectweb.asm.util.ASMifier.class.getPackage().getName();
		
		Assert.assertTrue("Missing: "+target,ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).hasClass(target));
		
		Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
				ClassPathHandler.getInstance().getTargetProjectClasspath(), prefix, false);
		Assert.assertTrue(classes.contains(target));
	}
	
	@Test
	public void testHasClass(){
		Assert.assertTrue(ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).hasClass(Foo.class.getName()));
		Assert.assertTrue(ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).hasClass(SubPackageFoo.class.getName()));		
	}
	
	
	@Test
	public void testSubPackage(){
		Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
				ClassPathHandler.getInstance().getTargetProjectClasspath(), basePrefix, false);
		Assert.assertTrue(classes.contains(Foo.class.getName()));
		Assert.assertTrue(classes.contains(SubPackageFoo.class.getName()));

		classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
				ClassPathHandler.getInstance().getTargetProjectClasspath(), basePrefix+".subp", false);
		Assert.assertTrue(! classes.contains(Foo.class.getName()));
		Assert.assertTrue(classes.contains(SubPackageFoo.class.getName()));
	}
	
	@Test
	public void testGatherClassNoInternal(){
		Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
				ClassPathHandler.getInstance().getTargetProjectClasspath(), basePrefix, false);
		Assert.assertTrue(classes.contains(Foo.class.getName()));
		Assert.assertTrue( ! classes.contains(Foo.InternalFooClass.class.getName()));
        Assert.assertEquals(2,classes.size()); //there is also SubPFoo
	}

    @Test
    public void testGatherClassWithInternalButNoAnonymous(){
        Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
                ClassPathHandler.getInstance().getTargetProjectClasspath(), basePrefix, true);
        Assert.assertTrue(classes.contains(Foo.class.getName()));
        Assert.assertTrue(""+Arrays.toString(classes.toArray()),classes.contains(Foo.InternalFooClass.class.getName()));
        Assert.assertEquals(3, classes.size());//there is also SubPFoo
    }

    @Test
    public void testGatherClassWithInternalIncludingAnonymous(){
        Collection<String> classes = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getAllClasses(
                ClassPathHandler.getInstance().getTargetProjectClasspath(), basePrefix, true, false);
        Assert.assertTrue(classes.contains(Foo.class.getName()));
        Assert.assertTrue(""+Arrays.toString(classes.toArray()),classes.contains(Foo.InternalFooClass.class.getName()));
        Assert.assertEquals(4, classes.size());//there is also SubPFoo
    }



    @Test
	public void testLoadOfEvoSuiteTestClassesAsStream() throws IOException {
		String className = ResourceListFoo.class.getName();
		InputStream res = ResourceList.getInstance(TestGenerationContext.getInstance().getClassLoaderForSUT()).getClassAsStream(className);
		Assert.assertNotNull(res);
		res.close();
	}

	

	private class ResourceListFoo {
	};

}