A sample Java test runner using annotations

Published by marco on 2009-04-19

I have found this toy code on java.sun.com that describes how Java annotations could be used to write a simple Test runner. This script gets as argument the name of a class and tries to execute all the methods of that class that are annotated as @Test.
The interesting aspect of this code is that is shows clearly how annotations can be used to execute/manipulate source code.

import java.lang.reflect.*;
 
public class RunTests {
  public static void main(String[] args) throws Exception {
     int passed = 0, failed = 0;
     for (Method m : Class.forName(args[0]).getMethods()) {
        if (m.isAnnotationPresent(Test.class)) {
           try {
              m.invoke(null);
              passed++;
           } catch (Throwable ex) {
              System.out.printf(
                "Test %s failed: %s %n",
                m,
                ex.getCause()
              );
              failed++;
           }
        }
     }
     System.out.printf("Passed: %d, Failed %d%n", passed, failed);
  }
}

Yahoo! Open Hack Day London 2009

Published by marco on 2009-04-19

Yahoo! logoFinally after 2 years Yahoo! is back with his Open Hack Day event in London! The 24h non stop event will take place in London the 9th and 10th of May, featuring tech talks on Yahoo!’s technologies, games, food, and of course plenty of hacking. If you are planning to join don’t forget to register visiting the official web page.

Here is the map to the venue:


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