JavaCompilerCore/test/bytecode/SourceFileBytecodeTest.java

package bytecode;

import static org.junit.Assert.*;

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;

import junit.framework.TestCase;

import org.junit.BeforeClass;
import org.junit.Test;

public abstract class SourceFileBytecodeTest extends TestCase{
	public String rootDirectory = System.getProperty("user.dir")+"/test/bytecode/";
	public String testFile;
	public String outputDirectory;
	
	protected String testName;
	
	public SourceFileBytecodeTest(){
		init();
		
		if(testName != null){
			
			testFile = testName+".jav";
			outputDirectory = "";
			
			SingleClassTester.compileToBytecode(rootDirectory+testFile, rootDirectory+outputDirectory);
		}else{
			throw new RuntimeException("rootDirectory, testFile or outputFile is null.");
		}
	}

	protected abstract void init();
	
	protected Class getClassToTest(){
		Class classToTest = null;
	    try {
			ClassLoader classLoader = getClassLoader();

		    classToTest =  classLoader.loadClass(testName);
		    

		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	    
	    return classToTest;
	}
	
	protected ClassLoader getClassLoader() throws Exception{
		File file = new File(rootDirectory);
	    URL url = file.toURL();
	    URL[] urls = new URL[]{url};

	    return new URLClassLoader(urls);
	}
}