libjava/testsuite/libjava.lang/PR29495.java

   1 // Test various reflection methods.
   2
   3 import java.lang.annotation.Inherited;
   4 import java.lang.reflect.Method;
   5 import java.lang.reflect.Field;
   6
   7 public class PR29495
   8 {
   9   public class container<T>
  10   {
  11     // This class has a synthetic field...
  12
  13     public T get(T v) { return v; }
  14   }
  15
  16   public class concrete extends container<String>
  17   {
  18     // This makes us have a synthetic bridge method.
  19     public String get(String v) { return "hi" + v; }
  20   }
  21
  22   // varargs method
  23   public static void va(Object... args)
  24   {
  25   }
  26
  27   public static void check(boolean x, String m)
  28   {
  29     if (! x)
  30       System.out.println("fail: " + m);
  31   }
  32
  33   public static void main(String[] args) throws Throwable
  34   {
  35     check (Inherited.class.isAnnotation(), "Inherited isAnnotation");
  36
  37     Method m = PR29495.class.getDeclaredMethod("va", new Class[] { Object[].class });
  38     check (m.isVarArgs(), "va isVarArgs");
  39
  40     m = concrete.class.getDeclaredMethod("get", new Class[] { Object.class });
  41     check (m.isSynthetic(), "get isSynthetic");
  42     check (m.isBridge(), "get isBridge");
  43
  44     Field[] fs = container.class.getDeclaredFields();
  45     boolean ok = false;
  46     for (int i = 0; i < fs.length; ++i)
  47       {
  48         if (fs[i].isSynthetic())
  49           {
  50             ok = true;
  51             break;
  52           }
  53       }
  54     check (ok, "container has synthetic field");
  55   }
  56 }