src/test/java/net/pterodactylus/sone/TestUtil.java

   1 package net.pterodactylus.sone;
   2
   3 import java.lang.reflect.Field;
   4 import java.lang.reflect.Modifier;
   5
   6 /**
   7  * Utilities for testing.
   8  *
   9  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  10  */
  11 public class TestUtil {
  12
  13         public static void setFinalField(Object object, String fieldName, Object value) {
  14                 try {
  15                         Field clientCoreField = object.getClass().getField(fieldName);
  16                         clientCoreField.setAccessible(true);
  17                         Field modifiersField = Field.class.getDeclaredField("modifiers");
  18                         modifiersField.setAccessible(true);
  19                         modifiersField.setInt(clientCoreField, clientCoreField.getModifiers() & ~Modifier.FINAL);
  20                         clientCoreField.set(object, value);
  21                 } catch (NoSuchFieldException e) {
  22                         throw new RuntimeException(e);
  23                 } catch (IllegalAccessException e) {
  24                         throw new RuntimeException(e);
  25                 }
  26         }
  27
  28         public static <T> T getPrivateField(Object object, String fieldName) {
  29                 try {
  30                         Field field = object.getClass().getDeclaredField(fieldName);
  31                         field.setAccessible(true);
  32                         return (T) field.get(object);
  33                 } catch (NoSuchFieldException e) {
  34                         throw new RuntimeException(e);
  35                 } catch (IllegalAccessException e) {
  36                         throw new RuntimeException(e);
  37                 }
  38         }
  39
  40 }