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JMockit is a Java toolkit for automated developer testing. It contains mocking/faking APIs and a code coverage tool, supporting both JUnit and TestNG. The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested in isolation from selected dependencies.

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/*
 * Copyright (c) 2006 JMockit developers
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.injection;

import java.lang.annotation.*;
import java.lang.reflect.*;
import javax.annotation.*;

/**
 * Provides type, name, and value(s) for an injection point, which is either a field to be injected or a parameter in the chosen constructor
 * of a tested class.
 */
public abstract class InjectionProvider
{
   public static final Object NULL = Void.class;

   @Nonnull protected final Type declaredType;
   @Nonnull protected final String name;
   @Nullable public InjectionProvider parent;

   protected InjectionProvider(@Nonnull Type declaredType, @Nonnull String name) {
      this.declaredType = declaredType;
      this.name = name;
   }

   @Nonnull public final Type getDeclaredType() { return declaredType; }
   @Nonnull public abstract Class getClassOfDeclaredType();
   @Nonnull public final String getName() { return name; }
   @Nonnull public Annotation[] getAnnotations() { throw new UnsupportedOperationException("No annotations"); }
   @Nullable public Object getValue(@Nullable Object owner) { return null; }

   public boolean hasAnnotation(@Nonnull Class annotationOfInterest) {
      for (Annotation annotation : getAnnotations()) {
         if (annotationOfInterest.isInstance(annotation)) {
            return true;
         }
      }

      return false;
   }

   @Override
   public String toString() {
      Class type = getClassOfDeclaredType();
      return '"' + type.getSimpleName() + ' ' + name + '"';
   }
}