package de.superx;

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

import org.junit.Ignore;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

/**
 * Class to run JUnit tests manually
 * @author hiber
 *
 */
@Ignore
public class JUnitTestRunner {

    private final String pathToTestSources = String.join(File.separator, "test-src");
    
    public static void main(String[] args) throws Exception {
        new JUnitTestRunner().execute("de.superx.stat.ExaminationStatistics2016Test", "de.superx.stat.GuestListenerStatisticsTest");
//        new JUnitTestRunner().executePackage("de.superx.stat");
    }
    
    private void executePackage(String packageName) throws Exception {
        String folderName = (this.pathToTestSources +"."+ packageName+".").replace(".", "/");
        File[] files = new File("./"+folderName).listFiles();
        for (File file : files) {
            if(file.getName().endsWith(".java")) {
                String binaryClassName = packageName + "."+file.getName().replace(".java", "");
                this.execute(binaryClassName);
            }
        }
    }

    private void execute(String... binaryClassNames) throws Exception {
        for (String binaryClassName : binaryClassNames) {
            execute(binaryClassName);
        }
    }

    private void execute(String binaryClassName) throws Exception {
        String fileName = this.pathToTestSources + binaryClassName.replace(".", "/") + ".java";
        URL[] urls = { new File(fileName).toURI().toURL() };
        URLClassLoader urlClassLoader = new URLClassLoader(urls);
        Class<?> testClasses = urlClassLoader.loadClass(binaryClassName);
        JUnitCore jUnitCore = new JUnitCore();
        this.printResult(binaryClassName, jUnitCore.run(testClasses));
        urlClassLoader.close();  
    }
    
    @SuppressWarnings("static-method")
    private void printResult(String binaryClassName, Result result) {
        System.out.println("Result of test "+binaryClassName+":");
        System.out.println(">>> Tests:\t"+result.getRunCount());
        System.out.println(">>> Skipped:\t"+result.getIgnoreCount());
        System.err.println(">>> Failed:\t"+result.getFailureCount());
        if (result.getFailureCount() > 0) {
            for (Failure failure : result.getFailures()) {
                System.err.println(">>> "+failure.toString());
            }
        }
    }
}