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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.lang.annotation.ElementType;
  4. import java.lang.annotation.Retention;
  5. import java.lang.annotation.RetentionPolicy;
  6. import java.lang.annotation.Target;
  7. import java.lang.reflect.Method;
  8.  
  9. @Target(ElementType.METHOD)
  10. @Retention(RetentionPolicy.RUNTIME)
  11. @interface Test {
  12.     Class expected();
  13. }
  14.  
  15. class TestAnnotationParser {
  16.     public <T> void parse(Class<T> clazz, T obj) throws Exception {
  17.         Method[] methods = clazz.getMethods();
  18.         int pass = 0;
  19.         int fail = 0;
  20.  
  21.         for (Method method : methods) {
  22.             if (method.isAnnotationPresent(Test.class)) {
  23.                 Test test = method.getAnnotation(Test.class);
  24.                 Class expected = test.expected();
  25.                 try {
  26.                     method.invoke(obj);
  27.                     pass++;
  28.                 } catch (Exception e) {
  29.                     if (Exception.class != expected) {
  30.                         e.printStackTrace();
  31.                         fail++;
  32.                     } else {
  33.                         pass++;
  34.                     }
  35.                 }
  36.             }
  37.         }
  38.         System.out.println("Passed:" + pass + "   Fail:" + fail);
  39.     }
  40. }
  41.  
  42. class MyTest {
  43.  
  44.     @Test(expected = RuntimeException.class)
  45.     public void testBlah() {
  46.     }
  47. }
  48.  
  49. /* Name of the class has to be "Main" only if the class is public. */
  50. public class Main {
  51.     public static void main(String[] args) {
  52.         TestAnnotationParser parser = new TestAnnotationParser();
  53.         try {
  54.             parser.parse(MyTest.class, new MyTest());
  55.         } catch (Exception e) {
  56.             e.printStackTrace();
  57.         }
  58.     }
  59. }
  60.  
Success #stdin #stdout 0.1s 380352KB
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Standard input is empty
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Passed:1   Fail:0
https://ideone.com/Qbmrct
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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